[INFO] cloning repository https://github.com/duarten/advent-of-code-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/duarten/advent-of-code-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduarten%2Fadvent-of-code-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduarten%2Fadvent-of-code-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e95f19f8f9faa0ebc2f929b9118c67f45728c3e
[INFO] testing duarten/advent-of-code-2020 against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduarten%2Fadvent-of-code-2020" "/workspace/builds/worker-86/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-86/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/duarten/advent-of-code-2020 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/duarten/advent-of-code-2020
[INFO] finished tweaking git repo https://github.com/duarten/advent-of-code-2020
[INFO] tweaked toml for git repo https://github.com/duarten/advent-of-code-2020 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] crate git repo https://github.com/duarten/advent-of-code-2020 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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] 2b09e2871dc16c6aec8dbe98ee0b075ecc97872519e01fbf5ab016b0f95b53ca
[INFO] running `Command { std: "docker" "start" "-a" "2b09e2871dc16c6aec8dbe98ee0b075ecc97872519e01fbf5ab016b0f95b53ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b09e2871dc16c6aec8dbe98ee0b075ecc97872519e01fbf5ab016b0f95b53ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b09e2871dc16c6aec8dbe98ee0b075ecc97872519e01fbf5ab016b0f95b53ca", kill_on_drop: false }`
[INFO] [stdout] 2b09e2871dc16c6aec8dbe98ee0b075ecc97872519e01fbf5ab016b0f95b53ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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] 3b83224c354607c23cf1d80cc0a80a1db6ee896404c8a9635668dbc80ac2ac5c
[INFO] running `Command { std: "docker" "start" "-a" "3b83224c354607c23cf1d80cc0a80a1db6ee896404c8a9635668dbc80ac2ac5c", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day01` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day01` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day02` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day02` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day02
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day03` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day03` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day03
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day04` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day04` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day04
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day05` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day05` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day05
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day06` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day06` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day06
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day07` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day07` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day07
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day08` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day08` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day08
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day09` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day09` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day09
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day10` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day10` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day10
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day11` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day11` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day11
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day12` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day12` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day12
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day13` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day13` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day13
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day14` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day14` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day14
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day15` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day15` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day15
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day16` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day16` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day16
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day17` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day17` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day17
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day18` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day18` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day18
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day19` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day19` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day19
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day20` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day20` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day20
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day21` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day21` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day21
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day22` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day22` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day22
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day23` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day23` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day23
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day24` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day24` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day24
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `day25` in package `aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)` has the same output filename as the bin target `day25` in package `aoc2015 v0.1.0 (/opt/rustwide/workdir/aoc2015)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/day25
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr]    Compiling anyhow v1.0.36
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling utils v0.1.0 (/opt/rustwide/workdir/utils)
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling aoc2020 v0.1.0 (/opt/rustwide/workdir/aoc2020)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> aoc2020/src/day17.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(bool_to_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 `aoc2020`
[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" "3b83224c354607c23cf1d80cc0a80a1db6ee896404c8a9635668dbc80ac2ac5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b83224c354607c23cf1d80cc0a80a1db6ee896404c8a9635668dbc80ac2ac5c", kill_on_drop: false }`
[INFO] [stdout] 3b83224c354607c23cf1d80cc0a80a1db6ee896404c8a9635668dbc80ac2ac5c
