[INFO] fetching crate rc4 0.2.0...
[INFO] checking rc4-0.2.0 against 1.95.0 for pr-155915
[INFO] extracting crate rc4 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate rc4 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rc4 0.2.0
[INFO] tweaked toml for crates.io crate rc4 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rc4 0.2.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rc4 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hex-literal v1.1.0
[INFO] [stderr]   Downloaded hybrid-array v0.4.9
[INFO] [stderr]   Downloaded blobby v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84e8554d0bc8786a7c52d4639c05f7b14dffc601fa1836ce89b4abe4c92deae2
[INFO] running `Command { std: "docker" "start" "-a" "84e8554d0bc8786a7c52d4639c05f7b14dffc601fa1836ce89b4abe4c92deae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84e8554d0bc8786a7c52d4639c05f7b14dffc601fa1836ce89b4abe4c92deae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84e8554d0bc8786a7c52d4639c05f7b14dffc601fa1836ce89b4abe4c92deae2", kill_on_drop: false }`
[INFO] [stdout] 84e8554d0bc8786a7c52d4639c05f7b14dffc601fa1836ce89b4abe4c92deae2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83dc974206df607d91888b94ee99eb0f769d91c8f8682a9079799cfaad6957ca
[INFO] running `Command { std: "docker" "start" "-a" "83dc974206df607d91888b94ee99eb0f769d91c8f8682a9079799cfaad6957ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]     Checking blobby v0.4.0
[INFO] [stderr]     Checking hex-literal v1.1.0
[INFO] [stderr]     Checking hybrid-array v0.4.9
[INFO] [stderr]     Checking block-buffer v0.12.0
[INFO] [stderr]     Checking inout v0.2.2
[INFO] [stderr]     Checking crypto-common v0.2.1
[INFO] [stderr]     Checking cipher v0.5.1
[INFO] [stderr]     Checking rc4 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/mod.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rc4` (bench "mod") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "83dc974206df607d91888b94ee99eb0f769d91c8f8682a9079799cfaad6957ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83dc974206df607d91888b94ee99eb0f769d91c8f8682a9079799cfaad6957ca", kill_on_drop: false }`
[INFO] [stdout] 83dc974206df607d91888b94ee99eb0f769d91c8f8682a9079799cfaad6957ca
