[INFO] cloning repository https://github.com/DanielBrookRoberge/virtual_8080
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DanielBrookRoberge/virtual_8080" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielBrookRoberge%2Fvirtual_8080", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielBrookRoberge%2Fvirtual_8080'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0965849467abe21e6963ec2eadfdfc36936bfaf9
[INFO] testing DanielBrookRoberge/virtual_8080 against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielBrookRoberge%2Fvirtual_8080" "/workspace/builds/worker-99/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-99/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DanielBrookRoberge/virtual_8080 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DanielBrookRoberge/virtual_8080
[INFO] finished tweaking git repo https://github.com/DanielBrookRoberge/virtual_8080
[INFO] tweaked toml for git repo https://github.com/DanielBrookRoberge/virtual_8080 written to /workspace/builds/worker-99/source/Cargo.toml
[INFO] crate git repo https://github.com/DanielBrookRoberge/virtual_8080 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cd1f30fd1f112f86304e82496e74c68562c0de583f8701d73ad03284f3e3bc9
[INFO] running `Command { std: "docker" "start" "-a" "0cd1f30fd1f112f86304e82496e74c68562c0de583f8701d73ad03284f3e3bc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cd1f30fd1f112f86304e82496e74c68562c0de583f8701d73ad03284f3e3bc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cd1f30fd1f112f86304e82496e74c68562c0de583f8701d73ad03284f3e3bc9", kill_on_drop: false }`
[INFO] [stdout] 0cd1f30fd1f112f86304e82496e74c68562c0de583f8701d73ad03284f3e3bc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44a5bf11704fa48ec4e6451bd0363876391335ed70be48de0085cf45dfbc5fbc
[INFO] running `Command { std: "docker" "start" "-a" "44a5bf11704fa48ec4e6451bd0363876391335ed70be48de0085cf45dfbc5fbc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling virtual_8080 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll)]
[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 `virtual_8080` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "44a5bf11704fa48ec4e6451bd0363876391335ed70be48de0085cf45dfbc5fbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44a5bf11704fa48ec4e6451bd0363876391335ed70be48de0085cf45dfbc5fbc", kill_on_drop: false }`
[INFO] [stdout] 44a5bf11704fa48ec4e6451bd0363876391335ed70be48de0085cf45dfbc5fbc