[INFO] fetching crate cool-id-generator 1.0.0...
[INFO] checking cool-id-generator-1.0.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate cool-id-generator 1.0.0 into /workspace/builds/worker-114/source
[INFO] validating manifest of crates.io crate cool-id-generator 1.0.0 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 cool-id-generator 1.0.0
[INFO] finished tweaking crates.io crate cool-id-generator 1.0.0
[INFO] tweaked toml for crates.io crate cool-id-generator 1.0.0 written to /workspace/builds/worker-114/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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] [stdout] 13a9d4f6478782856cba9f4d4e09215af35af8d1f7b9c71ca381dc68009d5bc4
[INFO] running `Command { std: "docker" "start" "-a" "13a9d4f6478782856cba9f4d4e09215af35af8d1f7b9c71ca381dc68009d5bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13a9d4f6478782856cba9f4d4e09215af35af8d1f7b9c71ca381dc68009d5bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13a9d4f6478782856cba9f4d4e09215af35af8d1f7b9c71ca381dc68009d5bc4", kill_on_drop: false }`
[INFO] [stdout] 13a9d4f6478782856cba9f4d4e09215af35af8d1f7b9c71ca381dc68009d5bc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ab3483673388540c10761b283f7e09163e6c404371b72fab4717eeeb5c16bd4
[INFO] running `Command { std: "docker" "start" "-a" "2ab3483673388540c10761b283f7e09163e6c404371b72fab4717eeeb5c16bd4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.14
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking cool-id-generator v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/bench.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cool-id-generator` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2ab3483673388540c10761b283f7e09163e6c404371b72fab4717eeeb5c16bd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ab3483673388540c10761b283f7e09163e6c404371b72fab4717eeeb5c16bd4", kill_on_drop: false }`
[INFO] [stdout] 2ab3483673388540c10761b283f7e09163e6c404371b72fab4717eeeb5c16bd4
