[INFO] fetching crate pretty_toa 1.0.0...
[INFO] testing pretty_toa-1.0.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate pretty_toa 1.0.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate pretty_toa 1.0.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pretty_toa 1.0.0
[INFO] finished tweaking crates.io crate pretty_toa 1.0.0
[INFO] tweaked toml for crates.io crate pretty_toa 1.0.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2df2a15f1a61cb9f1e2e40a8365cd850bd84ded7552103332a3a86d5640d10f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f2df2a15f1a61cb9f1e2e40a8365cd850bd84ded7552103332a3a86d5640d10f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2df2a15f1a61cb9f1e2e40a8365cd850bd84ded7552103332a3a86d5640d10f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2df2a15f1a61cb9f1e2e40a8365cd850bd84ded7552103332a3a86d5640d10f", kill_on_drop: false }`
[INFO] [stdout] f2df2a15f1a61cb9f1e2e40a8365cd850bd84ded7552103332a3a86d5640d10f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eff12d8ff411cc7b60fee02e1e3169819d448765d9a5e725bacdbac4c87b126d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "eff12d8ff411cc7b60fee02e1e3169819d448765d9a5e725bacdbac4c87b126d", kill_on_drop: false }`
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling pretty_toa v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.94s
[INFO] running `Command { std: "docker" "inspect" "eff12d8ff411cc7b60fee02e1e3169819d448765d9a5e725bacdbac4c87b126d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eff12d8ff411cc7b60fee02e1e3169819d448765d9a5e725bacdbac4c87b126d", kill_on_drop: false }`
[INFO] [stdout] eff12d8ff411cc7b60fee02e1e3169819d448765d9a5e725bacdbac4c87b126d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] abbd11b8898d53b25cf375d9f6fd5d78bd488dc285a70d7b49f78a0d3e0dc896
[INFO] running `Command { std: "docker" "start" "-a" "abbd11b8898d53b25cf375d9f6fd5d78bd488dc285a70d7b49f78a0d3e0dc896", kill_on_drop: false }`
[INFO] [stderr]    Compiling pretty_toa v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/tests.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[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 `pretty_toa`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "abbd11b8898d53b25cf375d9f6fd5d78bd488dc285a70d7b49f78a0d3e0dc896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abbd11b8898d53b25cf375d9f6fd5d78bd488dc285a70d7b49f78a0d3e0dc896", kill_on_drop: false }`
[INFO] [stdout] abbd11b8898d53b25cf375d9f6fd5d78bd488dc285a70d7b49f78a0d3e0dc896
