[INFO] cloning repository https://github.com/risboo6909/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/risboo6909/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frisboo6909%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frisboo6909%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca565fcdb401ac2e736693b78be702b7deb97bc6
[INFO] testing risboo6909/aoc2020 against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frisboo6909%2Faoc2020" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/risboo6909/aoc2020 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/risboo6909/aoc2020
[INFO] finished tweaking git repo https://github.com/risboo6909/aoc2020
[INFO] tweaked toml for git repo https://github.com/risboo6909/aoc2020 written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/risboo6909/aoc2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa08f31e4cbc534da02cbaffab8f0b6eb41ec23d9c2a1dd8e61135a03272dc98
[INFO] running `Command { std: "docker" "start" "-a" "aa08f31e4cbc534da02cbaffab8f0b6eb41ec23d9c2a1dd8e61135a03272dc98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa08f31e4cbc534da02cbaffab8f0b6eb41ec23d9c2a1dd8e61135a03272dc98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa08f31e4cbc534da02cbaffab8f0b6eb41ec23d9c2a1dd8e61135a03272dc98", kill_on_drop: false }`
[INFO] [stdout] aa08f31e4cbc534da02cbaffab8f0b6eb41ec23d9c2a1dd8e61135a03272dc98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27bc07408b0f652c5fd5d0ce590462fddf90a506481ed8df485b2e4dd75d5f1c
[INFO] running `Command { std: "docker" "start" "-a" "27bc07408b0f652c5fd5d0ce590462fddf90a506481ed8df485b2e4dd75d5f1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling weezl v0.1.4
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling object v0.23.0
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling bytemuck v1.5.0
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling permutohedron v0.2.4
[INFO] [stderr]    Compiling prefix-tree v0.5.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling gif v0.11.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling addr2line v0.14.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling backtrace v0.3.56
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling utils v0.1.0 (/opt/rustwide/workdir/utils)
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling tiff v0.6.1
[INFO] [stderr]    Compiling image v0.23.13
[INFO] [stderr]    Compiling problems v0.1.0 (/opt/rustwide/workdir/problems)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> problems/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_option)]
[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 `problems` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "27bc07408b0f652c5fd5d0ce590462fddf90a506481ed8df485b2e4dd75d5f1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27bc07408b0f652c5fd5d0ce590462fddf90a506481ed8df485b2e4dd75d5f1c", kill_on_drop: false }`
[INFO] [stdout] 27bc07408b0f652c5fd5d0ce590462fddf90a506481ed8df485b2e4dd75d5f1c