[INFO] fetching crate sp-tasks 3.0.0...
[INFO] testing sp-tasks-3.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate sp-tasks 3.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate sp-tasks 3.0.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sp-tasks 3.0.0
[INFO] finished tweaking crates.io crate sp-tasks 3.0.0
[INFO] tweaked toml for crates.io crate sp-tasks 3.0.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a22cd99c753864b0239e8031f9c7833833cb448029495f0fed9277ee7f9cec57
[INFO] running `Command { std: "docker" "start" "-a" "a22cd99c753864b0239e8031f9c7833833cb448029495f0fed9277ee7f9cec57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a22cd99c753864b0239e8031f9c7833833cb448029495f0fed9277ee7f9cec57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a22cd99c753864b0239e8031f9c7833833cb448029495f0fed9277ee7f9cec57", kill_on_drop: false }`
[INFO] [stdout] a22cd99c753864b0239e8031f9c7833833cb448029495f0fed9277ee7f9cec57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5a1477b073b7dcd2b4a70324c475ad391cd0ee3756674c385a1d642e5be8fbfa
[INFO] running `Command { std: "docker" "start" "-a" "5a1477b073b7dcd2b4a70324c475ad391cd0ee3756674c385a1d642e5be8fbfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling byte-slice-cast v1.0.0
[INFO] [stderr]    Compiling arrayvec v0.7.1
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling sp-std v3.0.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling ref-cast v1.0.6
[INFO] [stderr]    Compiling subtle v1.0.0
[INFO] [stderr]    Compiling parity-wasm v0.41.0
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling memory_units v0.3.0
[INFO] [stderr]    Compiling hash-db v0.15.2
[INFO] [stderr]    Compiling parity-util-mem v0.9.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling environmental v1.1.3
[INFO] [stderr]    Compiling dyn-clone v1.0.4
[INFO] [stderr]    Compiling base58 v0.1.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling tracing-core v0.1.19
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling sharded-slab v0.1.3
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling ed25519 v1.2.0
[INFO] [stderr]    Compiling trie-root v0.16.0
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling crypto-mac v0.11.1
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.1
[INFO] [stderr]    Compiling ref-cast-impl v1.0.6
[INFO] [stderr]    Compiling sp-debug-derive v3.0.0
[INFO] [stderr]    Compiling dyn-clonable-impl v0.9.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling uint v0.9.1
[INFO] [stderr]    Compiling hash256-std-hasher v0.15.2
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling sp-panic-handler v3.0.0
[INFO] [stderr]    Compiling parity-util-mem-derive v0.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling hmac v0.7.1
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling bitvec v0.20.4
[INFO] [stderr]    Compiling hmac v0.8.1
[INFO] [stderr]    Compiling pbkdf2 v0.4.0
[INFO] [stderr]    Compiling hmac v0.11.0
[INFO] [stderr]    Compiling pbkdf2 v0.8.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling zeroize v1.4.1
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling fixed-hash v0.7.0
[INFO] [stderr]    Compiling twox-hash v1.6.1
[INFO] [stderr]    Compiling hmac-drbg v0.2.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[INFO] [stderr]    Compiling wasmi-validation v0.3.0
[INFO] [stderr]    Compiling merlin v2.0.1
[INFO] [stderr]    Compiling curve25519-dalek v2.1.3
[INFO] [stderr]    Compiling curve25519-dalek v3.2.0
[INFO] [stderr]    Compiling secrecy v0.7.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling dyn-clonable v0.9.0
[INFO] [stderr]    Compiling tiny-bip39 v0.8.0
[INFO] [stderr]    Compiling libsecp256k1 v0.3.5
[INFO] [stderr]    Compiling trie-db v0.22.6
[INFO] [stderr]    Compiling wasmi v0.6.2
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling impl-serde v0.3.1
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling schnorrkel v0.9.1
[INFO] [stderr]    Compiling ed25519-dalek v1.0.1
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling substrate-bip39 v0.4.4
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling tracing-subscriber v0.2.20
[INFO] [stderr]    Compiling proc-macro-crate v1.0.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling parity-scale-codec-derive v2.2.0
[INFO] [stderr]    Compiling sp-runtime-interface-proc-macro v3.0.0
[INFO] [stderr]    Compiling parity-scale-codec v2.2.0
[INFO] [stderr]    Compiling impl-codec v0.5.1
[INFO] [stderr]    Compiling sp-storage v3.0.0
[INFO] [stderr]    Compiling sp-wasm-interface v3.0.0
[INFO] [stderr]    Compiling sp-tracing v3.0.0
[INFO] [stderr]    Compiling primitive-types v0.9.1
[INFO] [stderr]    Compiling sp-externalities v0.9.0
[INFO] [stderr]    Compiling sp-runtime-interface v3.0.0
[INFO] [stderr]    Compiling memory-db v0.26.0
[INFO] [stderr]    Compiling sp-core v3.0.0
[INFO] [stderr]    Compiling sp-trie v3.0.0
[INFO] [stderr]    Compiling sp-keystore v0.9.0
[INFO] [stderr]    Compiling sp-state-machine v0.9.0
[INFO] [stderr]    Compiling sp-io v3.0.0
[INFO] [stderr]    Compiling sp-tasks v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 59s
[INFO] running `Command { std: "docker" "inspect" "5a1477b073b7dcd2b4a70324c475ad391cd0ee3756674c385a1d642e5be8fbfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a1477b073b7dcd2b4a70324c475ad391cd0ee3756674c385a1d642e5be8fbfa", kill_on_drop: false }`
[INFO] [stdout] 5a1477b073b7dcd2b4a70324c475ad391cd0ee3756674c385a1d642e5be8fbfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11ea381bf29fe4780f4a9ac1c25ef0a310b911cc5f9eedb438f75d32e25688cc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "11ea381bf29fe4780f4a9ac1c25ef0a310b911cc5f9eedb438f75d32e25688cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling sp-tasks v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 12.74s
[INFO] running `Command { std: "docker" "inspect" "11ea381bf29fe4780f4a9ac1c25ef0a310b911cc5f9eedb438f75d32e25688cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11ea381bf29fe4780f4a9ac1c25ef0a310b911cc5f9eedb438f75d32e25688cc", kill_on_drop: false }`
[INFO] [stdout] 11ea381bf29fe4780f4a9ac1c25ef0a310b911cc5f9eedb438f75d32e25688cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 090a8515397959634f58cffb2079a3ae92c45e7a22da877ef9b9d72ad292964f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "090a8515397959634f58cffb2079a3ae92c45e7a22da877ef9b9d72ad292964f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sp_tasks-ac2158db75e383b0)
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::basic ... ok
[INFO] [stdout] test tests::panicking ... ok
[INFO] [stdout] test tests::many_joins ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.79s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sp-tasks
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 35) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 35) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `codec`
[INFO] [stdout]  --> src/lib.rs:36:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use codec::Encode;
[INFO] [stdout]   |     ^^^^^ help: a similar path exists: `sp_runtime_interface::codec`
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode` found for enum `Option` in the current scope
[INFO] [stdout]    --> src/lib.rs:45:97
[INFO] [stdout]     |
[INFO] [stdout] 13  |            sp_tasks::spawn(my_parallel_computator, computation_payload.chunks(10).nth(idx as _).encode())
[INFO] [stdout]     |                                                                                                 ^^^^^^ method not found in `Option<&[u8]>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/parity-scale-codec-2.2.0/src/codec.rs:228:8
[INFO] [stdout]     |
[INFO] [stdout] 228 |     fn encode(&self) -> Vec<u8> {
[INFO] [stdout]     |        ------ the method is available for `Option<&[u8]>` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 3   | use parity_scale_codec::codec::Encode;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 35)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.54s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "090a8515397959634f58cffb2079a3ae92c45e7a22da877ef9b9d72ad292964f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "090a8515397959634f58cffb2079a3ae92c45e7a22da877ef9b9d72ad292964f", kill_on_drop: false }`
[INFO] [stdout] 090a8515397959634f58cffb2079a3ae92c45e7a22da877ef9b9d72ad292964f