[INFO] cloning repository https://github.com/DerekStride/writing-an-interpreter-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DerekStride/writing-an-interpreter-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDerekStride%2Fwriting-an-interpreter-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDerekStride%2Fwriting-an-interpreter-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a3099f964ae1857afa1fe143f3cae0dbcb436a9
[INFO] testing DerekStride/writing-an-interpreter-in-rust against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDerekStride%2Fwriting-an-interpreter-in-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DerekStride/writing-an-interpreter-in-rust on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DerekStride/writing-an-interpreter-in-rust
[INFO] finished tweaking git repo https://github.com/DerekStride/writing-an-interpreter-in-rust
[INFO] tweaked toml for git repo https://github.com/DerekStride/writing-an-interpreter-in-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/DerekStride/writing-an-interpreter-in-rust 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" "+1.75.0" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bdda6b63dd6e07cab273ad03502be4ce9d3e8d4177572f434cdb4a0ff1a94118
[INFO] running `Command { std: "docker" "start" "-a" "bdda6b63dd6e07cab273ad03502be4ce9d3e8d4177572f434cdb4a0ff1a94118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdda6b63dd6e07cab273ad03502be4ce9d3e8d4177572f434cdb4a0ff1a94118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdda6b63dd6e07cab273ad03502be4ce9d3e8d4177572f434cdb4a0ff1a94118", kill_on_drop: false }`
[INFO] [stdout] bdda6b63dd6e07cab273ad03502be4ce9d3e8d4177572f434cdb4a0ff1a94118
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73787c1e45bf8b677584336c305ad8078c8eef12fcc77f1c44d50f09d1bb2422
[INFO] running `Command { std: "docker" "start" "-a" "73787c1e45bf8b677584336c305ad8078c8eef12fcc77f1c44d50f09d1bb2422", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/bench.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(div_duration)]
[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 `monkey` (bin "bench") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "73787c1e45bf8b677584336c305ad8078c8eef12fcc77f1c44d50f09d1bb2422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73787c1e45bf8b677584336c305ad8078c8eef12fcc77f1c44d50f09d1bb2422", kill_on_drop: false }`
[INFO] [stdout] 73787c1e45bf8b677584336c305ad8078c8eef12fcc77f1c44d50f09d1bb2422
