[INFO] fetching crate simple-rnd 0.9.1...
[INFO] testing simple-rnd-0.9.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate simple-rnd 0.9.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate simple-rnd 0.9.1
[INFO] finished tweaking crates.io crate simple-rnd 0.9.1
[INFO] tweaked toml for crates.io crate simple-rnd 0.9.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate simple-rnd 0.9.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate simple-rnd 0.9.1 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdb6f4fac754e91ed810394630214f0226bffbd630f2d0feb77182a58c26a9f3
[INFO] running `Command { std: "docker" "start" "-a" "fdb6f4fac754e91ed810394630214f0226bffbd630f2d0feb77182a58c26a9f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdb6f4fac754e91ed810394630214f0226bffbd630f2d0feb77182a58c26a9f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdb6f4fac754e91ed810394630214f0226bffbd630f2d0feb77182a58c26a9f3", kill_on_drop: false }`
[INFO] [stdout] fdb6f4fac754e91ed810394630214f0226bffbd630f2d0feb77182a58c26a9f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9597a069a4cf5e757753f30bb44592396083f4fc6f6cde8963676480754ed6fe
[INFO] running `Command { std: "docker" "start" "-a" "9597a069a4cf5e757753f30bb44592396083f4fc6f6cde8963676480754ed6fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-rnd v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "9597a069a4cf5e757753f30bb44592396083f4fc6f6cde8963676480754ed6fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9597a069a4cf5e757753f30bb44592396083f4fc6f6cde8963676480754ed6fe", kill_on_drop: false }`
[INFO] [stdout] 9597a069a4cf5e757753f30bb44592396083f4fc6f6cde8963676480754ed6fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef917d88f917fb7e9834cd687ae5b7d9b10ba6a91871feb654b24db91fb3082e
[INFO] running `Command { std: "docker" "start" "-a" "ef917d88f917fb7e9834cd687ae5b7d9b10ba6a91871feb654b24db91fb3082e", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-rnd v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/test.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 `simple-rnd` (test "test") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ef917d88f917fb7e9834cd687ae5b7d9b10ba6a91871feb654b24db91fb3082e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef917d88f917fb7e9834cd687ae5b7d9b10ba6a91871feb654b24db91fb3082e", kill_on_drop: false }`
[INFO] [stdout] ef917d88f917fb7e9834cd687ae5b7d9b10ba6a91871feb654b24db91fb3082e