[INFO] fetching crate finitediff 0.2.0...
[INFO] checking finitediff-0.2.0 against 1.95.0 for pr-155915
[INFO] extracting crate finitediff 0.2.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate finitediff 0.2.0
[INFO] finished tweaking crates.io crate finitediff 0.2.0
[INFO] tweaked toml for crates.io crate finitediff 0.2.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate finitediff 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 finitediff 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 209b98af830b83d74fb4a0af40ebad9b04abb8b2e63e7445fa4fc7367b944bf8
[INFO] running `Command { std: "docker" "start" "-a" "209b98af830b83d74fb4a0af40ebad9b04abb8b2e63e7445fa4fc7367b944bf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "209b98af830b83d74fb4a0af40ebad9b04abb8b2e63e7445fa4fc7367b944bf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "209b98af830b83d74fb4a0af40ebad9b04abb8b2e63e7445fa4fc7367b944bf8", kill_on_drop: false }`
[INFO] [stdout] 209b98af830b83d74fb4a0af40ebad9b04abb8b2e63e7445fa4fc7367b944bf8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8226628ca82d90a792833763ae97667d5e6d1935d40419c1a1c713d0564eba23
[INFO] running `Command { std: "docker" "start" "-a" "8226628ca82d90a792833763ae97667d5e6d1935d40419c1a1c713d0564eba23", kill_on_drop: false }`
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking finitediff v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> benches/bench.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![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 `finitediff` (bench "bench") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8226628ca82d90a792833763ae97667d5e6d1935d40419c1a1c713d0564eba23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8226628ca82d90a792833763ae97667d5e6d1935d40419c1a1c713d0564eba23", kill_on_drop: false }`
[INFO] [stdout] 8226628ca82d90a792833763ae97667d5e6d1935d40419c1a1c713d0564eba23
