[INFO] cloning repository https://github.com/TimoFreiberg/AdventOfCode2020 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TimoFreiberg/AdventOfCode2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimoFreiberg%2FAdventOfCode2020", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimoFreiberg%2FAdventOfCode2020'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] fe07550e60635a6155336f88befa79ad73ef0504 [INFO] testing TimoFreiberg/AdventOfCode2020 against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimoFreiberg%2FAdventOfCode2020" "/workspace/builds/worker-55/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-55/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/TimoFreiberg/AdventOfCode2020 on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/TimoFreiberg/AdventOfCode2020 [INFO] finished tweaking git repo https://github.com/TimoFreiberg/AdventOfCode2020 [INFO] tweaked toml for git repo https://github.com/TimoFreiberg/AdventOfCode2020 written to /workspace/builds/worker-55/source/Cargo.toml [INFO] crate git repo https://github.com/TimoFreiberg/AdventOfCode2020 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded eyre v0.6.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 74a8c730b53308c468cfa889fe673945c15e632cff9c4d70e73b6cbcc795d091 [INFO] running `Command { std: "docker" "start" "-a" "74a8c730b53308c468cfa889fe673945c15e632cff9c4d70e73b6cbcc795d091", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "74a8c730b53308c468cfa889fe673945c15e632cff9c4d70e73b6cbcc795d091", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "74a8c730b53308c468cfa889fe673945c15e632cff9c4d70e73b6cbcc795d091", kill_on_drop: false }` [INFO] [stdout] 74a8c730b53308c468cfa889fe673945c15e632cff9c4d70e73b6cbcc795d091 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7251afefb0c51c0d86af04ffe51d19fe3b21e09ec3a4359d1fcb3a9db0852491 [INFO] running `Command { std: "docker" "start" "-a" "7251afefb0c51c0d86af04ffe51d19fe3b21e09ec3a4359d1fcb3a9db0852491", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling eyre v0.6.3 [INFO] [stderr] Compiling regex-syntax v0.6.21 [INFO] [stderr] Compiling termcolor v1.1.2 [INFO] [stderr] Compiling humantime v2.0.1 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling indenter v0.3.0 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling itertools v0.9.0 [INFO] [stderr] Compiling aho-corasick v0.7.15 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling regex v1.4.2 [INFO] [stderr] Compiling env_logger v0.8.2 [INFO] [stderr] Compiling aoc2020 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(pattern)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/main.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(try_blocks)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `aoc2020` due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "7251afefb0c51c0d86af04ffe51d19fe3b21e09ec3a4359d1fcb3a9db0852491", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7251afefb0c51c0d86af04ffe51d19fe3b21e09ec3a4359d1fcb3a9db0852491", kill_on_drop: false }` [INFO] [stdout] 7251afefb0c51c0d86af04ffe51d19fe3b21e09ec3a4359d1fcb3a9db0852491