[INFO] cloning repository https://github.com/EngosSoftware/palindronum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EngosSoftware/palindronum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEngosSoftware%2Fpalindronum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEngosSoftware%2Fpalindronum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 879cc07c9444e9e383b0b16b4307c8e5047917d3
[INFO] checking EngosSoftware/palindronum against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEngosSoftware%2Fpalindronum" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/EngosSoftware/palindronum
[INFO] finished tweaking git repo https://github.com/EngosSoftware/palindronum
[INFO] tweaked toml for git repo https://github.com/EngosSoftware/palindronum written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/EngosSoftware/palindronum 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 git repo https://github.com/EngosSoftware/palindronum 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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a93bd878d4708a5aaf5a629a9795792a5faf58fad1987438c9176a25c7dbbf9a
[INFO] running `Command { std: "docker" "start" "-a" "a93bd878d4708a5aaf5a629a9795792a5faf58fad1987438c9176a25c7dbbf9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a93bd878d4708a5aaf5a629a9795792a5faf58fad1987438c9176a25c7dbbf9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a93bd878d4708a5aaf5a629a9795792a5faf58fad1987438c9176a25c7dbbf9a", kill_on_drop: false }`
[INFO] [stdout] a93bd878d4708a5aaf5a629a9795792a5faf58fad1987438c9176a25c7dbbf9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] bb0d7bb983e016718e12d9c6f7e4c299be73df985e964cbfe6b42002b7a78b2c
[INFO] running `Command { std: "docker" "start" "-a" "bb0d7bb983e016718e12d9c6f7e4c299be73df985e964cbfe6b42002b7a78b2c", kill_on_drop: false }`
[INFO] [stderr]     Checking palindronum v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> benches/palindromes.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![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 `palindronum` (bench "palindromes") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "bb0d7bb983e016718e12d9c6f7e4c299be73df985e964cbfe6b42002b7a78b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb0d7bb983e016718e12d9c6f7e4c299be73df985e964cbfe6b42002b7a78b2c", kill_on_drop: false }`
[INFO] [stdout] bb0d7bb983e016718e12d9c6f7e4c299be73df985e964cbfe6b42002b7a78b2c
