[INFO] cloning repository https://github.com/Subnite/WAV-Optimizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Subnite/WAV-Optimizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubnite%2FWAV-Optimizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubnite%2FWAV-Optimizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fdd00836dc4384a1ae097905c5a3fa9d4600e259
[INFO] checking Subnite/WAV-Optimizer against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubnite%2FWAV-Optimizer" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Subnite/WAV-Optimizer
[INFO] finished tweaking git repo https://github.com/Subnite/WAV-Optimizer
[INFO] tweaked toml for git repo https://github.com/Subnite/WAV-Optimizer written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Subnite/WAV-Optimizer on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Subnite/WAV-Optimizer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a391b423b608ebb1698986ba4d996c366e439cd908837c322ac9ed5b7e2c8df9
[INFO] running `Command { std: "docker" "start" "-a" "a391b423b608ebb1698986ba4d996c366e439cd908837c322ac9ed5b7e2c8df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a391b423b608ebb1698986ba4d996c366e439cd908837c322ac9ed5b7e2c8df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a391b423b608ebb1698986ba4d996c366e439cd908837c322ac9ed5b7e2c8df9", kill_on_drop: false }`
[INFO] [stdout] a391b423b608ebb1698986ba4d996c366e439cd908837c322ac9ed5b7e2c8df9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0b40004c63597086ebdebb18a63670a007a595ade003389ee97acc842cb8056
[INFO] running `Command { std: "docker" "start" "-a" "f0b40004c63597086ebdebb18a63670a007a595ade003389ee97acc842cb8056", kill_on_drop: false }`
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking bstr v1.10.0
[INFO] [stderr]     Checking hound v3.5.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking regex-automata v0.4.8
[INFO] [stderr]     Checking globset v0.4.15
[INFO] [stderr]     Checking ignore v0.4.23
[INFO] [stderr]     Checking wav_optimizer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/main.rs:637:5
[INFO] [stdout]     |
[INFO] [stdout] 636 |     return ();
[INFO] [stdout]     |     --------- any code following this expression is unreachable
[INFO] [stdout] 637 |     assert_eq!(db_to_normalized_value(0.0), 1.0);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:572:36
[INFO] [stdout]     |
[INFO] [stdout] 572 | ...   ac.numbering_postfix = postfix_str.strip_prefix(&auto_cut_postfix_arg).unwrap().parse().unwrap_or(ac.numbering_postfix.to_string());
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wav_optimizer` (bin "wav_optimizer" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `wav_optimizer` (bin "wav_optimizer") due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:572:36
[INFO] [stdout]     |
[INFO] [stdout] 572 | ...   ac.numbering_postfix = postfix_str.strip_prefix(&auto_cut_postfix_arg).unwrap().parse().unwrap_or(ac.numbering_postfix.to_string());
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f0b40004c63597086ebdebb18a63670a007a595ade003389ee97acc842cb8056", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0b40004c63597086ebdebb18a63670a007a595ade003389ee97acc842cb8056", kill_on_drop: false }`
[INFO] [stdout] f0b40004c63597086ebdebb18a63670a007a595ade003389ee97acc842cb8056