Error when building ocw

[yumingchangsabodota]

I got these two errors while building the kitchen-node with ocw feature.

1. error: duplicate lang item in crate std (which serde depends on): panic_impl.

2. error: duplicate lang item in crate std (which serde depends on): oom.

Is there any way to resolve them? Thanks

[JoshOrndorff]

What exact command are you using to build the node?

[yumingchangsabodota]

I am using
cargo build --release --features ocw
with the runtime set to ocw-runtime

[JoshOrndorff]

You are running that command in the kitchen node directory or the repo root? Can you paste the exact output.

[armanriazi]

I have this issue too.
I decided to downgrade and then it worked

    > rustup uninstall nightly
    > rustup install nightly-2020-10-06
    > rustup target add wasm32-unknown-unknown --toolchain nightly-2020-10-06
    > export WASM_BUILD_TOOLCHAIN=nightly-2020-10-06

cargo build
warning: /mnt/home/app/recipes/Cargo.toml: unused manifest key: workspace.librocksdb-sys
   Compiling proc-macro2 v1.0.24
   Compiling unicode-xid v0.2.1
   Compiling syn v1.0.64
   Compiling libc v0.2.89
   Compiling cfg-if v1.0.0
   Compiling autocfg v1.0.1
   Compiling value-bag v1.0.0-alpha.6
   Compiling log v0.4.14
   Compiling serde_derive v1.0.125
   Compiling serde v1.0.125
   Compiling byteorder v1.4.3
   Compiling ppv-lite86 v0.2.10
   Compiling scopeguard v1.1.0
   Compiling version_check v0.9.3
   Compiling memchr v2.3.4
   Compiling lazy_static v1.4.0
   Compiling typenum v1.13.0
   Compiling futures v0.1.31
   Compiling cfg-if v0.1.10
   Compiling smallvec v1.6.1
   Compiling slab v0.4.2
   Compiling getrandom v0.2.2
   Compiling futures-core v0.3.13
   Compiling pin-project-lite v0.2.6
   Compiling ahash v0.4.7
   Compiling futures-io v0.3.13
   Compiling getrandom v0.1.16
   Compiling proc-macro-hack v0.5.19
   Compiling either v1.6.1
   Compiling arrayvec v0.5.2
   Compiling futures-sink v0.3.13
   Compiling proc-macro-nested v0.1.7
   Compiling pin-utils v0.1.0
   Compiling futures-task v0.3.13
   Compiling anyhow v1.0.38
   Compiling subtle v2.4.0
   Compiling itoa v0.4.7
   Compiling opaque-debug v0.3.0
   Compiling static_assertions v1.1.0
   Compiling crunchy v0.2.2
   Compiling tinyvec_macros v0.1.0
   Compiling block-padding v0.2.1
   Compiling byte-tools v0.3.1
   Compiling libm v0.2.1
   Compiling cpuid-bool v0.1.2
   Compiling arrayref v0.3.6
   Compiling ryu v1.0.5
   Compiling keccak v0.1.0
   Compiling constant_time_eq v0.1.5
   Compiling serde_json v1.0.64
   Compiling opaque-debug v0.2.3
   Compiling fake-simd v0.1.2
   Compiling regex-syntax v0.6.23
   Compiling wyz v0.2.0
   Compiling tap v1.0.1
   Compiling subtle v1.0.0
   Compiling funty v1.1.0
   Compiling signature v1.3.0
   Compiling radium v0.6.2
   Compiling byte-slice-cast v1.0.0
   Compiling ansi_term v0.12.1
   Compiling hex v0.4.3
   Compiling rustc-hex v2.1.0
   Compiling sp-std v3.0.0
   Compiling rustc-hash v1.1.0
   Compiling rustc-demangle v0.1.18
   Compiling parity-util-mem v0.9.0
   Compiling adler v1.0.2
   Compiling ref-cast v1.0.6
   Compiling arrayvec v0.4.12
   Compiling parity-wasm v0.41.0
   Compiling hash-db v0.15.2
   Compiling nodrop v0.1.14
   Compiling memory_units v0.3.0
   Compiling tiny-keccak v2.0.2
   Compiling environmental v1.1.2
   Compiling dyn-clone v1.0.4
   Compiling base58 v0.1.0
   Compiling async-trait v0.1.48
   Compiling gimli v0.23.0
   Compiling object v0.23.0
   Compiling bytes v1.0.1
   Compiling paste v1.0.5
   Compiling fnv v1.0.7
   Compiling remove_dir_all v0.5.3
   Compiling unicode-segmentation v1.7.1
   Compiling semver-parser v0.7.0
   Compiling fixedbitset v0.2.0
   Compiling multimap v0.8.3
   Compiling bitflags v1.2.1
   Compiling spin v0.5.2
   Compiling untrusted v0.7.1
   Compiling matches v0.1.8
   Compiling percent-encoding v2.1.0
   Compiling data-encoding v2.3.2
   Compiling pin-project-internal v0.4.27
   Compiling futures-timer v3.0.2
   Compiling unsigned-varint v0.5.1
   Compiling bs58 v0.4.0
   Compiling void v1.0.2
   Compiling cache-padded v1.1.1
   Compiling parking v2.0.0
   Compiling waker-fn v1.1.0
   Compiling fastrand v1.4.0
   Compiling httparse v1.3.5
   Compiling vec-arena v1.0.0
   Compiling bytes v0.5.6
   Compiling event-listener v2.5.1
   Compiling pin-project-lite v0.1.12
   Compiling wasm-bindgen-shared v0.2.71
   Compiling signal-hook v0.3.7
   Compiling async-task v4.0.3
   Compiling atomic-waker v1.0.0
   Compiling cpuid-bool v0.2.0
   Compiling crc32fast v1.2.1
   Compiling bumpalo v3.6.1
   Compiling pkg-config v0.3.19
   Compiling base64 v0.12.3
   Compiling try-lock v0.2.3
   Compiling prometheus v0.11.0
   Compiling wasm-bindgen v0.2.71
   Compiling base64 v0.13.0
   Compiling nohash-hasher v0.2.0
   Compiling ipnet v2.3.0
   Compiling quick-error v1.2.3
   Compiling httpdate v0.3.2
   Compiling hex_fmt v0.3.0
   Compiling parity-send-wrapper v0.1.0
   Compiling tower-service v0.3.1
   Compiling ucd-trie v0.1.3
   Compiling maybe-uninit v2.0.0
   Compiling rawpointer v0.2.1
   Compiling same-file v1.0.6
   Compiling radium v0.5.3
   Compiling linked-hash-map v0.5.4
   Compiling glob v0.3.0
   Compiling lazycell v1.3.0
   Compiling take_mut v0.2.2
   Compiling platforms v1.1.0
   Compiling failure_derive v0.1.8
   Compiling bindgen v0.59.0
   Compiling base-x v0.2.8
   Compiling shlex v1.0.0
   Compiling peeking_take_while v0.1.2
   Compiling percent-encoding v1.0.1
   Compiling ip_network v0.3.4
   Compiling winapi v0.3.9
   Compiling sc-consensus-slots v0.9.0
   Compiling retain_mut v0.1.2
   Compiling mio-named-pipes v0.1.7
   Compiling safe-mix v1.0.1
   Compiling pdqselect v0.1.0
   Compiling futures-timer v2.0.2
   Compiling openssl-probe v0.1.2
   Compiling stable_deref_trait v1.2.0
   Compiling unicode-width v0.1.8
   Compiling proc-macro2 v0.4.30
   Compiling names v0.11.0
   Compiling vec_map v0.8.2
   Compiling ansi_term v0.11.0
   Compiling strsim v0.8.0
   Compiling substrate-fixed v0.5.6 (https://github.com/encointer/substrate-fixed.git?rev=b33d186888c60f38adafcfc0ec3a21aab263aef1#b33d1868)
   Compiling substrate-fixed v0.5.6 (https://github.com/encointer/substrate-fixed.git?branch=master#b33d1868)
   Compiling unicode-xid v0.1.0
   Compiling syn v0.15.44
   Compiling radium v0.3.0
   Compiling byte-slice-cast v0.3.5
   Compiling assert_matches v1.5.0
   Compiling instant v0.1.9
   Compiling libloading v0.7.0
   Compiling num-traits v0.2.14
   Compiling num-integer v0.1.44
   Compiling num-bigint v0.2.6
   Compiling num-rational v0.2.4
   Compiling miniz_oxide v0.4.4
   Compiling indexmap v1.6.2
   Compiling crossbeam-utils v0.8.3
   Compiling atomic v0.5.0
   Compiling crossbeam-utils v0.7.2
   Compiling num-complex v0.2.4
   Compiling memoffset v0.5.6
   Compiling crossbeam-epoch v0.8.2
   Compiling parity-wasm v0.32.0
   Compiling lock_api v0.4.2
   Compiling lock_api v0.3.4
   Compiling generic-array v0.14.4
   Compiling proc-macro-error-attr v1.0.4
   Compiling proc-macro-error v1.0.4
   Compiling nom v6.2.1
   Compiling unicase v2.6.0
   Compiling tracing-core v0.1.17
   Compiling sharded-slab v0.1.1
   Compiling tokio-service v0.1.0
   Compiling hashbrown v0.9.1
   Compiling itertools v0.9.0
   Compiling futures-channel v0.3.13
   Compiling tinyvec v1.1.1
   Compiling block-padding v0.1.5
   Compiling blake2b_simd v0.5.11
   Compiling blake2s_simd v0.5.11
   Compiling regex-automata v0.1.9
   Compiling ed25519 v1.0.3
   Compiling account-set v3.0.0 (/mnt/home/app/recipes/traits/account-set)
   Compiling wasmi-validation v0.3.0
   Compiling trie-root v0.16.0
   Compiling trie-root v0.15.2
   Compiling addr2line v0.14.1
   Compiling http v0.2.3
   Compiling tokio-sync v0.1.8
   Compiling heck v0.3.2
   Compiling semver v0.9.0
   Compiling semver v0.6.0
   Compiling unicode-bidi v0.3.4
   Compiling form_urlencoded v1.0.1
   Compiling concurrent-queue v1.2.2
   Compiling async-mutex v1.4.0
   Compiling async-lock v2.3.0
   Compiling quicksink v0.1.2
   Compiling dns-parser v0.8.0
   Compiling pest v2.1.3
   Compiling matrixmultiply v0.2.4
   Compiling walkdir v2.3.2
   Compiling linked_hash_set v0.1.4
   Compiling clang-sys v1.2.0
   Compiling owning_ref v0.4.1
   Compiling textwrap v0.11.0
   Compiling bitvec v0.17.4
   Compiling lru v0.6.5
   Compiling unicode-normalization v0.1.17
   Compiling matchers v0.0.1
   Compiling http-body v0.3.1
   Compiling rustc_version v0.2.3
   Compiling build-helper v0.1.1
   Compiling async-channel v1.6.1
   Compiling semver-parser v0.10.2
   Compiling quote v1.0.9
   Compiling num_cpus v1.13.0
   Compiling parking_lot_core v0.8.3
   Compiling time v0.1.44
   Compiling jobserver v0.1.21
   Compiling iovec v0.1.4
   Compiling net2 v0.2.37
   Compiling socket2 v0.3.19
   Compiling signal-hook-registry v1.3.0
   Compiling atty v0.2.14
   Compiling parking_lot_core v0.7.2
   Compiling fs2 v0.4.3
   Compiling memmap2 v0.2.1
   Compiling fs-swap v0.2.5
   Compiling dirs-sys v0.3.5
   Compiling rand v0.4.6
   Compiling rpassword v5.0.1
   Compiling fdlimit v0.2.1
   Compiling aho-corasick v0.7.15
   Compiling futures-lite v1.11.3
   Compiling bstr v0.2.15
   Compiling generic-array v0.12.4
   Compiling generic-array v0.13.3
   Compiling paste-impl v0.1.18
   Compiling uint v0.9.0
   Compiling hash256-std-hasher v0.15.2
   Compiling idna v0.2.2
   Compiling idna v0.1.5
   Compiling bitvec v0.20.2
   Compiling blake2-rfc v0.2.18
   Compiling snow v0.7.2
   Compiling parking_lot_core v0.6.2
   Compiling parking_lot v0.9.0
   Compiling hyper v0.12.36
   Compiling nix v0.20.0
   Compiling smallvec v0.6.14
   Compiling bitvec v0.19.5
   Compiling substrate-build-script-utils v3.0.0
   Compiling quote v0.6.13
   Compiling rand_core v0.6.2
   Compiling futures-cpupool v0.1.8
   Compiling threadpool v1.8.1
   Compiling parking_lot v0.11.1
   Compiling rand_core v0.5.1
   Compiling cc v1.0.67
   Compiling bytes v0.4.12
   Compiling nb-connect v1.0.3
   Compiling miow v0.3.6
   Compiling clap v2.33.3
   Compiling parking_lot v0.10.2
   Compiling directories v3.0.1
   Compiling rand v0.3.23
   Compiling backtrace v0.3.56
   Compiling petgraph v0.5.1
   Compiling tokio-executor v0.1.10
   Compiling crossbeam-queue v0.2.3
   Compiling regex v1.4.5
   Compiling digest v0.9.0
   Compiling block-buffer v0.9.0
   Compiling crypto-mac v0.8.0
   Compiling block-cipher v0.8.0
   Compiling universal-hash v0.4.0
   Compiling aead v0.3.2
   Compiling cipher v0.2.5
   Compiling digest v0.8.1
   Compiling block-buffer v0.7.3
   Compiling crypto-mac v0.7.0
   Compiling paste v0.1.18
   Compiling url v2.2.1
   Compiling url v1.7.2
   Compiling integer-sqrt v0.1.5
   Compiling approx v0.3.2
   Compiling ctrlc v3.1.8
   Compiling synstructure v0.12.4
   Compiling ctor v0.1.19
   Compiling thiserror-impl v1.0.24
   Compiling futures-macro v0.3.13
   Compiling tracing-attributes v0.1.15
   Compiling impl-trait-for-tuples v0.2.1
   Compiling ref-cast-impl v1.0.6
   Compiling sp-debug-derive v3.0.0
   Compiling dyn-clonable-impl v0.9.0
   Compiling derive_more v0.99.11
   Compiling prost-derive v0.7.0
   Compiling pin-project-internal v1.0.5
   Compiling asn1_der_derive v0.1.2
   Compiling frame-support-procedural-tools-derive v3.0.0
   Compiling minicbor-derive v0.6.2
   Compiling libp2p-core-derive v0.21.0
   Compiling data-encoding-macro-internal v0.1.9
   Compiling strum_macros v0.20.1
   Compiling rand_chacha v0.3.0
   Compiling once_cell v1.7.2
   Compiling rand_pcg v0.2.1
   Compiling rand_chacha v0.2.2
   Compiling ring v0.16.20
   Compiling blake3 v0.3.7
   Compiling libz-sys v1.1.2
   Compiling http v0.1.21
   Compiling string v0.2.1
   Compiling tokio-buf v0.1.1
   Compiling sp-panic-handler v3.0.0
   Compiling tokio-timer v0.2.13
   Compiling tokio-current-thread v0.1.7
   Compiling crossbeam-deque v0.7.3
   Compiling Inflector v0.11.4
   Compiling sha2 v0.9.3
   Compiling sha3 v0.9.1
   Compiling sha-1 v0.9.4
   Compiling hmac v0.8.1
   Compiling pbkdf2 v0.4.0
   Compiling blake2 v0.9.1
   Compiling aes-soft v0.5.0
   Compiling stream-cipher v0.7.1
   Compiling polyval v0.4.5
   Compiling poly1305 v0.6.2
   Compiling salsa20 v0.7.2
   Compiling sha2 v0.8.2
   Compiling sha-1 v0.8.2
   Compiling sha3 v0.8.2
   Compiling hmac v0.7.1
   Compiling pbkdf2 v0.3.0
   Compiling chrono v0.4.19
   Compiling simba v0.1.5
   Compiling cexpr v0.5.0
   Compiling derive_more v0.15.0
   Compiling zeroize_derive v1.0.1
   Compiling parity-util-mem-derive v0.1.0
   Compiling thiserror v1.0.24
   Compiling futures-util v0.3.13
   Compiling dyn-clonable v0.9.0
   Compiling prost v0.7.0
   Compiling pin-project v1.0.5
   Compiling pin-project v0.4.27
   Compiling asn1_der v0.6.3
   Compiling minicbor v0.7.2
   Compiling data-encoding-macro v0.1.10
   Compiling strum v0.20.0
   Compiling structopt-derive v0.4.14
   Compiling rand v0.8.3
   Compiling thread_local v1.1.3
   Compiling blocking v1.0.2
   Compiling async-executor v1.4.0
   Compiling rand v0.7.3
   Compiling http-body v0.1.0
   Compiling aes v0.5.0
   Compiling ghash v0.3.1
   Compiling hmac-drbg v0.2.0
   Compiling vergen v3.2.0
   Compiling zeroize v1.2.0
   Compiling failure v0.1.8
   Compiling toml v0.5.8
   Compiling impl-serde v0.3.1
   Compiling tracing-serde v0.1.2
   Compiling semver v0.11.0
   Compiling cargo-platform v0.1.1
   Compiling erased-serde v0.3.13
   Compiling parity-scale-codec v1.3.7
   Compiling which v4.0.2
   Compiling futures-executor v0.3.13
   Compiling asynchronous-codec v0.6.0
   Compiling asynchronous-codec v0.5.0
   Compiling prost-types v0.7.0
   Compiling multibase v0.8.0
   Compiling structopt v0.3.21
   Compiling fixed-hash v0.7.0
   Compiling tempfile v3.2.0
   Compiling twox-hash v1.6.0
   Compiling cuckoofilter v0.5.0
   Compiling rand_distr v0.2.2
   Compiling statrs v0.12.0
   Compiling aes-gcm v0.7.0
   Compiling libsecp256k1 v0.3.5
   Compiling wasmi v0.6.2
   Compiling librocksdb-sys v6.20.3
   Compiling curve25519-dalek v3.0.2
   Compiling merlin v2.0.1
   Compiling curve25519-dalek v2.1.2
   Compiling secrecy v0.7.0
   Compiling tiny-bip39 v0.8.0
   Compiling chacha20 v0.5.0
   Compiling tracing v0.1.25
   Compiling tracing-log v0.1.2
   Compiling trie-db v0.22.3
   Compiling mio v0.6.23
   Compiling polling v2.0.2
   Compiling wasm-bindgen-backend v0.2.71
   Compiling kv-log-macro v1.0.7
   Compiling want v0.3.0
   Compiling tokio-io v0.1.13
   Compiling wasm-gc-api v0.1.11
   Compiling tokio-threadpool v0.1.18
   Compiling globset v0.4.6
   Compiling want v0.2.0
   Compiling parity-db v0.2.4
   Compiling proc-macro-crate v0.1.5
   Compiling sp-serializer v3.0.0
   Compiling jsonrpc-core v15.1.0
   Compiling sp-chain-spec v3.0.0
   Compiling rustc_version v0.3.3
   Compiling cargo_metadata v0.12.3
   Compiling prost-build v0.7.0
   Compiling futures v0.3.13
   Compiling unsigned-varint v0.7.0
   Compiling unsigned-varint v0.6.0
   Compiling nalgebra v0.21.1
   Compiling webpki v0.21.4
   Compiling sct v0.6.0
   Compiling ed25519-dalek v1.0.1
   Compiling x25519-dalek v1.1.0
   Compiling schnorrkel v0.9.1
   Compiling chacha20poly1305 v0.6.0
   Compiling tracing-futures v0.2.5
   Compiling tracing-subscriber v0.2.17
   Compiling mio-uds v0.6.8
   Compiling mio-extras v2.0.6
   Compiling async-io v1.3.1
   Compiling wasm-bindgen-macro-support v0.2.71
   Compiling tokio-reactor v0.1.12
   Compiling tokio-codec v0.1.2
   Compiling h2 v0.1.26
   Compiling tokio-fs v0.1.7
   Compiling frame-support-procedural-tools v3.0.0
   Compiling parity-scale-codec-derive v2.0.1
   Compiling sp-runtime-interface-proc-macro v3.0.0
   Compiling multihash-derive v0.7.1
   Compiling sp-api-proc-macro v3.0.0
   Compiling jsonrpc-derive v15.1.0
   Compiling sc-tracing-proc-macro v3.0.0
   Compiling sc-chain-spec-derive v3.0.0
   Compiling jsonrpc-pubsub v15.1.0
   Compiling substrate-wasm-builder v4.0.0
   Compiling rw-stream-sink v0.2.1
   Compiling wasm-timer v0.2.5
   Compiling yamux v0.8.1
   Compiling libp2p-pnet v0.20.0
   Compiling sp-utils v3.0.0
   Compiling futures-diagnose v1.0.1
   Compiling intervalier v0.4.0
   Compiling exit-future v0.2.0
   Compiling multistream-select v0.10.2
   Compiling linregress v0.4.0
   Compiling webpki-roots v0.21.0
   Compiling rustls v0.19.0
   Compiling rustls v0.18.1
   Compiling ct-logs v0.7.0
   Compiling substrate-bip39 v0.4.2
   Compiling tokio v0.2.25
   Compiling parity-ws v0.10.0
   Compiling async-global-executor v2.0.2
   Compiling async-process v1.0.2
   Compiling if-watch v0.1.8
   Compiling wasm-bindgen-macro v0.2.71
   Compiling tokio-tcp v0.1.4
   Compiling tokio-udp v0.1.6
   Compiling tokio-uds v0.2.7
   Compiling frame-support-procedural v3.0.0
   Compiling parity-scale-codec v2.0.1
   Compiling multihash v0.13.2
   Compiling jsonrpc-client-transports v15.1.0
   Compiling hybrid-consensus v3.0.0 (/mnt/home/app/recipes/nodes/hybrid-consensus)
   Compiling kitchen-node v3.0.0 (/mnt/home/app/recipes/nodes/kitchen-node)
   Compiling rpc-node v3.0.0 (/mnt/home/app/recipes/nodes/rpc-node)
   Compiling basic-pow v3.0.0 (/mnt/home/app/recipes/nodes/basic-pow)
   Compiling super-runtime v3.0.0 (/mnt/home/app/recipes/runtimes/super-runtime)
   Compiling api-runtime v3.0.0 (/mnt/home/app/recipes/runtimes/api-runtime)
   Compiling minimal-grandpa-runtime v3.0.0 (/mnt/home/app/recipes/runtimes/minimal-grandpa-runtime)
   

**- [ *] Compiling ocw-runtime v3.0.0 (/mnt/home/app/recipes/runtimes/ocw-runtime)**

   Compiling weight-fee-runtime v3.0.0 (/mnt/home/app/recipes/runtimes/weight-fee-runtime)
   Compiling futures-rustls v0.21.1
   Compiling rustls-native-certs v0.4.0
   Compiling flate2 v1.0.20
   Compiling tokio-util v0.3.1
   Compiling tokio-rustls v0.14.1
   Compiling async-std v1.9.0
   Compiling tokio v0.1.22
   Compiling impl-codec v0.5.0
   Compiling sp-tracing v3.0.0
   Compiling sp-storage v3.0.0
   Compiling sp-wasm-interface v3.0.0
   Compiling sp-arithmetic v3.0.0
   Compiling fork-tree v3.0.0
   Compiling finality-grandpa v0.13.0
   Compiling parity-multiaddr v0.11.2
   Compiling cid v0.6.1
   Compiling jsonrpc-core-client v15.1.0
error: failed to run custom build command for `super-runtime v3.0.0 (/mnt/home/app/recipes/runtimes/super-runtime)`

Caused by:
  process didn't exit successfully: `/mnt/home/app/recipes/target/debug/build/super-runtime-c034e2a805453c98/build-script-build` (exit status: 1)
  --- stdout
  Information that should be included in a bug report.
  Executing build command: "rustup" "run" "nightly-2020-10-06" "cargo" "-Zfeatures=build_dep" "rustc" "--target=wasm32-unknown-unknown" "--manifest-path=/mnt/home/app/recipes/target/debug/wbuild/super-runtime/Cargo.toml" "--color=always" "--release"
  Using rustc version: rustc 1.49.0-nightly (a1dfd2490 2020-10-05)


  --- stderr
  warning: /mnt/home/app/recipes/Cargo.toml: unused manifest key: workspace.librocksdb-sys
     Compiling proc-macro2 v1.0.24
     Compiling unicode-xid v0.2.1
     Compiling syn v1.0.64
     Compiling serde v1.0.125
     Compiling serde_derive v1.0.125
     Compiling arrayvec v0.5.2
     Compiling byte-slice-cast v1.0.0
     Compiling log v0.4.14
     Compiling memchr v2.3.4
     Compiling crunchy v0.2.2
     Compiling sp-std v3.0.0
     Compiling static_assertions v1.1.0
     Compiling autocfg v1.0.1
     Compiling cfg-if v1.0.0
     Compiling regex-syntax v0.6.23
     Compiling lazy_static v1.4.0
     Compiling hex v0.4.3
     Compiling ref-cast v1.0.6
     Compiling byteorder v1.4.3
     Compiling pin-project-lite v0.2.6
     Compiling tracing-core v0.1.17
     Compiling parity-util-mem v0.9.0
     Compiling zeroize v1.2.0
     Compiling hash-db v0.15.2
     Compiling either v1.6.1
     Compiling paste v1.0.5
     Compiling bitflags v1.2.1
     Compiling smallvec v1.6.1
     Compiling arrayvec v0.4.12
     Compiling libc v0.2.89
     Compiling nodrop v0.1.14
     Compiling getrandom v0.2.2
     Compiling constant_time_eq v0.1.5
     Compiling ryu v1.0.5
     Compiling ucd-trie v0.1.3
     Compiling serde_json v1.0.64
     Compiling ppv-lite86 v0.2.10
     Compiling typenum v1.13.0
     Compiling semver-parser v0.7.0
     Compiling itoa v0.4.7
     Compiling same-file v1.0.6
     Compiling rustc-demangle v0.1.18
     Compiling remove_dir_all v0.5.3
     Compiling substrate-fixed v0.5.6 (https://github.com/encointer/substrate-fixed.git?rev=b33d186888c60f38adafcfc0ec3a21aab263aef1#b33d1868)
     Compiling ansi_term v0.12.1
     Compiling substrate-fixed v0.5.6 (https://github.com/encointer/substrate-fixed.git?branch=master#b33d1868)
     Compiling safe-mix v1.0.1
     Compiling account-set v3.0.0 (/mnt/home/app/recipes/traits/account-set)
     Compiling fixed-hash v0.7.0
     Compiling num-traits v0.2.14
     Compiling tracing v0.1.25
     Compiling secrecy v0.7.0
     Compiling pest v2.1.3
     Compiling semver v0.6.0
     Compiling parity-wasm v0.32.0
     Compiling walkdir v2.3.2
     Compiling semver-parser v0.10.2
     Compiling build-helper v0.1.1
     Compiling quote v1.0.9
     Compiling wasm-gc-api v0.1.11
     Compiling aho-corasick v0.7.15
     Compiling uint v0.9.0
     Compiling hash256-std-hasher v0.15.2
     Compiling blake2-rfc v0.2.18
     Compiling atty v0.2.14
     Compiling regex v1.4.5
     Compiling integer-sqrt v0.1.5
     Compiling rand_core v0.6.2
     Compiling synstructure v0.12.4
     Compiling impl-trait-for-tuples v0.2.1
     Compiling ref-cast-impl v1.0.6
     Compiling sp-debug-derive v3.0.0
     Compiling frame-support-procedural-tools-derive v3.0.0
     Compiling Inflector v0.11.4
     Compiling rand_chacha v0.3.0
     Compiling parity-util-mem-derive v0.1.0
     Compiling rand v0.8.3
     Compiling toml v0.5.8
     Compiling semver v0.11.0
     Compiling cargo-platform v0.1.1
     Compiling tempfile v3.2.0
     Compiling proc-macro-crate v0.1.5
     Compiling cargo_metadata v0.12.3
     Compiling frame-support-procedural-tools v3.0.0
     Compiling parity-scale-codec-derive v2.0.1
     Compiling sp-runtime-interface-proc-macro v3.0.0
     Compiling sp-api-proc-macro v3.0.0
     Compiling substrate-wasm-builder v4.0.0
     Compiling frame-support-procedural v3.0.0
     Compiling parity-scale-codec v2.0.1
     Compiling super-runtime v3.0.0 (/mnt/home/app/recipes/runtimes/super-runtime)
     Compiling impl-codec v0.5.0
     Compiling sp-wasm-interface v3.0.0
     Compiling sp-tracing v3.0.0
     Compiling sp-storage v3.0.0
     Compiling sp-arithmetic v3.0.0
     Compiling primitive-types v0.9.0
     Compiling sp-runtime-interface v3.0.0
     Compiling sp-core v3.0.0
     Compiling sp-io v3.0.0
     Compiling sp-inherents v3.0.0
     Compiling frame-metadata v13.0.0
     Compiling sp-application-crypto v3.0.0
     Compiling sp-runtime v3.0.0
     Compiling sp-version v3.0.0
     Compiling sp-staking v3.0.0
     Compiling sp-api v3.0.0
     Compiling frame-support v3.0.0
     Compiling sp-timestamp v3.0.0
     Compiling sp-offchain v3.0.0
     Compiling sp-transaction-pool v3.0.0
     Compiling sp-block-builder v3.0.0
     Compiling sp-session v3.0.0
     Compiling frame-system v3.0.0
     Compiling pallet-balances v3.0.0
     Compiling vec-set v3.0.0 (/mnt/home/app/recipes/pallets/vec-set)
     Compiling pallet-transaction-payment v3.0.0
     Compiling frame-executive v3.0.0
     Compiling randomness v3.0.0 (/mnt/home/app/recipes/pallets/randomness)
     Compiling generic-event v3.0.0 (/mnt/home/app/recipes/pallets/generic-event)
     Compiling map-set v3.0.0 (/mnt/home/app/recipes/pallets/map-set)
     Compiling pallet-sudo v3.0.0
     Compiling default-instance v3.0.0 (/mnt/home/app/recipes/pallets/default-instance)
     Compiling simple-event v3.0.0 (/mnt/home/app/recipes/pallets/simple-event)
     Compiling fixed-point v3.0.0 (/mnt/home/app/recipes/pallets/fixed-point)
     Compiling ringbuffer-queue v3.0.0 (/mnt/home/app/recipes/pallets/ringbuffer-queue)
     Compiling compounding-interest v3.0.0 (/mnt/home/app/recipes/pallets/compounding-interest)
  error[E0308]: mismatched types
     --> /mnt/home/app/recipes/pallets/compounding-interest/src/lib.rs:189:31
      |
  189 |           let elapsed_time_u32: u32 = TryInto::try_into(elapsed_time_block_number)
      |  _______________________________---___^
      | |                               |
      | |                               expected due to this
  190 | |             .ok()
  191 | |             .expect("blockchain will not exceed 2^32 blocks; qed");
      | |__________________________________________________________________^ expected `u32`, found `usize`
      |
  help: you can convert an `usize` to `u32` and panic if the converted value wouldn't fit
      |
  189 |         let elapsed_time_u32: u32 = TryInto::try_into(elapsed_time_block_number)
  190 |             .ok()
  191 |             .expect("blockchain will not exceed 2^32 blocks; qed").try_into().unwrap();
      |

  error: aborting due to previous error

  For more information about this error, try `rustc --explain E0308`.
  error: could not compile `compounding-interest`

  To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
^[[5~uilding [==================>      ] 665/845: librocksdb-sys(build)  

I made bold line of compiling ocw-runtime without problem but I have got this issue:

     Compiling compounding-interest v3.0.0 (/mnt/home/app/recipes/pallets/compounding-interest)
  error[E0308]: mismatched types

Running System ubuntu 20.04:
rustup show

Default host: x86_64-unknown-linux-gnu
rustup home:  /home/u2004zero/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-2020-10-01-x86_64-unknown-linux-gnu
nightly-2020-10-06-x86_64-unknown-linux-gnu
nightly-2021-08-30-x86_64-unknown-linux-gnu
nightly-2021-08-31-x86_64-unknown-linux-gnu
nightly-x86_64-unknown-linux-gnu

installed targets for active toolchain
--------------------------------------

wasm32-unknown-unknown
x86_64-unknown-linux-gnu

active toolchain
----------------

stable-x86_64-unknown-linux-gnu (default)
rustc 1.60.0 (7737e0b5c 2022-04-04)

@yumingchangsabodota

@JoshOrndorff

[sixTheDave]

We have encountered the same issue. Commenting out ocw-demo and ocw-runtime solved it. Of course, this is a problem is you want to use OCW.