[INFO] cloning repository https://github.com/elbaro/license-checker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elbaro/license-checker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felbaro%2Flicense-checker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felbaro%2Flicense-checker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2615f3f84e4092520ef0141de9719ff6a4f64d4
[INFO] testing elbaro/license-checker against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felbaro%2Flicense-checker" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elbaro/license-checker 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 git repo https://github.com/elbaro/license-checker
[INFO] finished tweaking git repo https://github.com/elbaro/license-checker
[INFO] tweaked toml for git repo https://github.com/elbaro/license-checker written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/elbaro/license-checker already has a lockfile, it will not be regenerated
[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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] e4dd3b41775d87fccd639ac9260c637f91a943e63c7c70123a8a81b0ff19b9fd
[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" "e4dd3b41775d87fccd639ac9260c637f91a943e63c7c70123a8a81b0ff19b9fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4dd3b41775d87fccd639ac9260c637f91a943e63c7c70123a8a81b0ff19b9fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4dd3b41775d87fccd639ac9260c637f91a943e63c7c70123a8a81b0ff19b9fd", kill_on_drop: false }`
[INFO] [stdout] e4dd3b41775d87fccd639ac9260c637f91a943e63c7c70123a8a81b0ff19b9fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 0319ae17dc83bf34af7f68dfe990b04e648cf4e3d8a0fe201db83b0244e2fcb4
[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" "0319ae17dc83bf34af7f68dfe990b04e648cf4e3d8a0fe201db83b0244e2fcb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.9
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling jobserver v0.1.17
[INFO] [stderr]    Compiling bstr v0.2.8
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling unicode-normalization v0.1.9
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling globset v0.4.4
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling openssl-sys v0.9.52
[INFO] [stderr]    Compiling libssh2-sys v0.2.13
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling libgit2-sys v0.9.1
[INFO] [stderr]    Compiling ignore v0.4.10
[INFO] [stderr]    Compiling url v2.1.0
[INFO] [stderr]    Compiling chrono v0.4.9
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling git2 v0.10.1
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling toml v0.5.5
[INFO] [stderr]    Compiling license-checker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(label_break_value)]
[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 `license-checker`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "0319ae17dc83bf34af7f68dfe990b04e648cf4e3d8a0fe201db83b0244e2fcb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0319ae17dc83bf34af7f68dfe990b04e648cf4e3d8a0fe201db83b0244e2fcb4", kill_on_drop: false }`
[INFO] [stdout] 0319ae17dc83bf34af7f68dfe990b04e648cf4e3d8a0fe201db83b0244e2fcb4
