[INFO] cloning repository https://github.com/Hasnep/chordown
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hasnep/chordown" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHasnep%2Fchordown", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHasnep%2Fchordown'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 92cddd7b1cd759fb5e5eb287b2fc64a3e7282fb4
[INFO] checking Hasnep/chordown against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHasnep%2Fchordown" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hasnep/chordown on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hasnep/chordown
[INFO] finished tweaking git repo https://github.com/Hasnep/chordown
[INFO] tweaked toml for git repo https://github.com/Hasnep/chordown written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Hasnep/chordown already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex-syntax v0.6.21
[INFO] [stderr]   Downloaded regex v1.4.2
[INFO] [stderr]   Downloaded syn v1.0.56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7df3c828998d73b91cf7548409ccb29cbf3697bcbbb64a0c203f0657fff33d2
[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" "c7df3c828998d73b91cf7548409ccb29cbf3697bcbbb64a0c203f0657fff33d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7df3c828998d73b91cf7548409ccb29cbf3697bcbbb64a0c203f0657fff33d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7df3c828998d73b91cf7548409ccb29cbf3697bcbbb64a0c203f0657fff33d2", kill_on_drop: false }`
[INFO] [stdout] c7df3c828998d73b91cf7548409ccb29cbf3697bcbbb64a0c203f0657fff33d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98b4470a84de95f80f7bdf78f05c2b22311a351f12bfb831767aca00ed23355f
[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" "98b4470a84de95f80f7bdf78f05c2b22311a351f12bfb831767aca00ed23355f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking chordown v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Note`
[INFO] [stdout]  --> src/parse_line_chords.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::chords::{parse_chord, Chord, Note};
[INFO] [stdout]   |                                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_chord`
[INFO] [stdout]   --> src/chords.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn parse_chord(chord: &str) -> Option<Chord> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_line_chords`
[INFO] [stdout]  --> src/parse_line_chords.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn parse_line_chords(line: &str) -> Option<Vec<Chord>> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_line_lyrics`
[INFO] [stdout]  --> src/parse_line_lyrics.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn parse_line_lyrics(line: &str) -> Vec<&str> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Chordown`
[INFO] [stdout]   --> src/main.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct Chordown {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Section`
[INFO] [stdout]   --> src/main.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | struct Section {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Line`
[INFO] [stdout]   --> src/main.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | struct Line {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Chordown`
[INFO] [stdout]   --> src/main.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct Chordown {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Section`
[INFO] [stdout]   --> src/main.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | struct Section {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Line`
[INFO] [stdout]   --> src/main.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | struct Line {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.76s
[INFO] running `Command { std: "docker" "inspect" "98b4470a84de95f80f7bdf78f05c2b22311a351f12bfb831767aca00ed23355f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98b4470a84de95f80f7bdf78f05c2b22311a351f12bfb831767aca00ed23355f", kill_on_drop: false }`
[INFO] [stdout] 98b4470a84de95f80f7bdf78f05c2b22311a351f12bfb831767aca00ed23355f