[INFO] fetching crate reingold-tilford 1.0.0...
[INFO] checking reingold-tilford-1.0.0 against 1.95.0 for pr-155915
[INFO] extracting crate reingold-tilford 1.0.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate reingold-tilford 1.0.0
[INFO] finished tweaking crates.io crate reingold-tilford 1.0.0
[INFO] tweaked toml for crates.io crate reingold-tilford 1.0.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate reingold-tilford 1.0.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 18 packages to latest compatible versions
[INFO] [stderr]       Adding pancurses v0.16.1 (available: v0.17.0)
[INFO] [stderr]       Adding petgraph v0.4.13 (available: v0.8.3)
[INFO] [stderr]       Adding smallvec v0.6.14 (available: v1.15.1)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded winreg v0.5.1
[INFO] [stderr]   Downloaded ordermap v0.3.5
[INFO] [stderr]   Downloaded pancurses v0.16.1
[INFO] [stderr]   Downloaded ncurses v5.101.0
[INFO] [stderr]   Downloaded pdcurses-sys v0.7.1
[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] d04ec6a67adfd91a81043eb1f04a48fd16ae070f36bd37d1da634656e31e7f96
[INFO] running `Command { std: "docker" "start" "-a" "d04ec6a67adfd91a81043eb1f04a48fd16ae070f36bd37d1da634656e31e7f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d04ec6a67adfd91a81043eb1f04a48fd16ae070f36bd37d1da634656e31e7f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d04ec6a67adfd91a81043eb1f04a48fd16ae070f36bd37d1da634656e31e7f96", kill_on_drop: false }`
[INFO] [stdout] d04ec6a67adfd91a81043eb1f04a48fd16ae070f36bd37d1da634656e31e7f96
[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] 9bc7102b6dd60600f239c0e4033652be6ae0d3c7d78e38b933adcedd38e36725
[INFO] running `Command { std: "docker" "start" "-a" "9bc7102b6dd60600f239c0e4033652be6ae0d3c7d78e38b933adcedd38e36725", kill_on_drop: false }`
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]    Compiling ncurses v5.101.0
[INFO] [stderr]     Checking reingold-tilford v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking pancurses v0.16.1
[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] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `reingold-tilford` (bench "bench") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9bc7102b6dd60600f239c0e4033652be6ae0d3c7d78e38b933adcedd38e36725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bc7102b6dd60600f239c0e4033652be6ae0d3c7d78e38b933adcedd38e36725", kill_on_drop: false }`
[INFO] [stdout] 9bc7102b6dd60600f239c0e4033652be6ae0d3c7d78e38b933adcedd38e36725
