[INFO] cloning repository https://github.com/cratelyn/tach
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cratelyn/tach" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcratelyn%2Ftach", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcratelyn%2Ftach'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11a0a4e1ed73e8588ec2e7bfa511117cdcef3ab3
[INFO] checking cratelyn/tach 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%2Fcratelyn%2Ftach" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cratelyn/tach
[INFO] finished tweaking git repo https://github.com/cratelyn/tach
[INFO] tweaked toml for git repo https://github.com/cratelyn/tach written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cratelyn/tach 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/cratelyn/tach 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8f6febe564a19d1d9566fb6c1e93c69d9849e18b153f1227a9fdea8d85ee9be9
[INFO] running `Command { std: "docker" "start" "-a" "8f6febe564a19d1d9566fb6c1e93c69d9849e18b153f1227a9fdea8d85ee9be9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f6febe564a19d1d9566fb6c1e93c69d9849e18b153f1227a9fdea8d85ee9be9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f6febe564a19d1d9566fb6c1e93c69d9849e18b153f1227a9fdea8d85ee9be9", kill_on_drop: false }`
[INFO] [stdout] 8f6febe564a19d1d9566fb6c1e93c69d9849e18b153f1227a9fdea8d85ee9be9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 7988783b104406154798b1a6e42f471c41e17d07eec5c6c541ae87532efc79ab
[INFO] running `Command { std: "docker" "start" "-a" "7988783b104406154798b1a6e42f471c41e17d07eec5c6c541ae87532efc79ab", kill_on_drop: false }`
[INFO] [stderr]     Checking tach v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/source.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     super::*,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/source.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     super::*,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MockStatClock` is never constructed
[INFO] [stdout]   --> src/source.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub struct MockStatClock {
[INFO] [stdout]    |                ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MockStatFile` is never constructed
[INFO] [stdout]   --> src/source.rs:63:16
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub struct MockStatFile {
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/stat.rs:166:31
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn parse_entry_kind(kind: &str) -> Either {
[INFO] [stdout]     |                               ^^^^     ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn parse_entry_kind(kind: &str) -> Either<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<f64, Infallible>
[INFO] [stdout]   --> src/stat/user_hz.rs:46:44
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let to_float = |Self(hz)| -> f64 { hz.try_into().unwrap() };
[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 `tach` (lib test) due to 1 previous error; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `MockStatClock` is never constructed
[INFO] [stdout]   --> src/source.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub struct MockStatClock {
[INFO] [stdout]    |                ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MockStatFile` is never constructed
[INFO] [stdout]   --> src/source.rs:63:16
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub struct MockStatFile {
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/stat.rs:166:31
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn parse_entry_kind(kind: &str) -> Either {
[INFO] [stdout]     |                               ^^^^     ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn parse_entry_kind(kind: &str) -> Either<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<f64, Infallible>
[INFO] [stdout]   --> src/stat/user_hz.rs:46:44
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let to_float = |Self(hz)| -> f64 { hz.try_into().unwrap() };
[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 `tach` (lib) due to 1 previous error; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7988783b104406154798b1a6e42f471c41e17d07eec5c6c541ae87532efc79ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7988783b104406154798b1a6e42f471c41e17d07eec5c6c541ae87532efc79ab", kill_on_drop: false }`
[INFO] [stdout] 7988783b104406154798b1a6e42f471c41e17d07eec5c6c541ae87532efc79ab