[INFO] cloning repository https://github.com/zzeroo/average
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zzeroo/average" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzeroo%2Faverage", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzeroo%2Faverage'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c564a292035638e9687a3f16040f6f713958678
[INFO] testing zzeroo/average against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzeroo%2Faverage" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zzeroo/average on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zzeroo/average
[INFO] finished tweaking git repo https://github.com/zzeroo/average
[INFO] tweaked toml for git repo https://github.com/zzeroo/average written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/zzeroo/average already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01721227f47ad2a2433f32a49617dff17cb1f2ad804660e21c433c1d5ed17da6
[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" "01721227f47ad2a2433f32a49617dff17cb1f2ad804660e21c433c1d5ed17da6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01721227f47ad2a2433f32a49617dff17cb1f2ad804660e21c433c1d5ed17da6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01721227f47ad2a2433f32a49617dff17cb1f2ad804660e21c433c1d5ed17da6", kill_on_drop: false }`
[INFO] [stdout] 01721227f47ad2a2433f32a49617dff17cb1f2ad804660e21c433c1d5ed17da6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9a557b58c7dd516e15f9fbc2b798dd61fc70ccda8fb7c33e20b842f8fc38712
[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" "e9a557b58c7dd516e15f9fbc2b798dd61fc70ccda8fb7c33e20b842f8fc38712", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling serde v0.9.7
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num-integer v0.1.32
[INFO] [stderr]    Compiling num-iter v0.1.32
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling average v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::prelude::*`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use chrono::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `average`.
[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" "e9a557b58c7dd516e15f9fbc2b798dd61fc70ccda8fb7c33e20b842f8fc38712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9a557b58c7dd516e15f9fbc2b798dd61fc70ccda8fb7c33e20b842f8fc38712", kill_on_drop: false }`
[INFO] [stdout] e9a557b58c7dd516e15f9fbc2b798dd61fc70ccda8fb7c33e20b842f8fc38712