[INFO] fetching crate rust_multicodec 0.2.0...
[INFO] testing rust_multicodec-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate rust_multicodec 0.2.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate rust_multicodec 0.2.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust_multicodec 0.2.0
[INFO] finished tweaking crates.io crate rust_multicodec 0.2.0
[INFO] tweaked toml for crates.io crate rust_multicodec 0.2.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ea161c353a4ce40b78924b7c283ba56c430a29541e4f43b449e9dbb75747e57
[INFO] running `Command { std: "docker" "start" "-a" "3ea161c353a4ce40b78924b7c283ba56c430a29541e4f43b449e9dbb75747e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ea161c353a4ce40b78924b7c283ba56c430a29541e4f43b449e9dbb75747e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ea161c353a4ce40b78924b7c283ba56c430a29541e4f43b449e9dbb75747e57", kill_on_drop: false }`
[INFO] [stdout] 3ea161c353a4ce40b78924b7c283ba56c430a29541e4f43b449e9dbb75747e57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfc14ccd3d0ef8c702f6d005bff10fb08fd9c568f0a8ff6b0a1b772a853abdbe
[INFO] running `Command { std: "docker" "start" "-a" "cfc14ccd3d0ef8c702f6d005bff10fb08fd9c568f0a8ff6b0a1b772a853abdbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling integer-encoding v1.1.7
[INFO] [stderr]    Compiling hex-slice v0.1.4
[INFO] [stderr]    Compiling rust_multicodec v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::str;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `decode_var_vec` found for type `u64` in the current scope
[INFO] [stdout]   --> src/codec_prefix.rs:65:34
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let decoded:(u64,usize)=u64::decode_var_vec(&Vec::from(data));
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^ function or associated item not found in `u64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `decode_var_vec` found for type `u64` in the current scope
[INFO] [stdout]   --> src/codec_prefix.rs:97:34
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let decoded:(u64,usize)=u64::decode_var_vec(&Vec::from(data));
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^ function or associated item not found in `u64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_multicodec` due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "cfc14ccd3d0ef8c702f6d005bff10fb08fd9c568f0a8ff6b0a1b772a853abdbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfc14ccd3d0ef8c702f6d005bff10fb08fd9c568f0a8ff6b0a1b772a853abdbe", kill_on_drop: false }`
[INFO] [stdout] cfc14ccd3d0ef8c702f6d005bff10fb08fd9c568f0a8ff6b0a1b772a853abdbe