[INFO] cloning repository https://github.com/jmagaram/keylayout
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmagaram/keylayout" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmagaram%2Fkeylayout", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmagaram%2Fkeylayout'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e67e6536deb4067b715d4fc07c9f7bb5f8a6ffd9
[INFO] checking jmagaram/keylayout 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%2Fjmagaram%2Fkeylayout" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jmagaram/keylayout
[INFO] finished tweaking git repo https://github.com/jmagaram/keylayout
[INFO] tweaked toml for git repo https://github.com/jmagaram/keylayout written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jmagaram/keylayout 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/jmagaram/keylayout 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9b93348de0388d8e0d3a625a489a98b160ccec3f1da2065a42419d611dd1b534
[INFO] running `Command { std: "docker" "start" "-a" "9b93348de0388d8e0d3a625a489a98b160ccec3f1da2065a42419d611dd1b534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b93348de0388d8e0d3a625a489a98b160ccec3f1da2065a42419d611dd1b534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b93348de0388d8e0d3a625a489a98b160ccec3f1da2065a42419d611dd1b534", kill_on_drop: false }`
[INFO] [stdout] 9b93348de0388d8e0d3a625a489a98b160ccec3f1da2065a42419d611dd1b534
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 790e4806c235cfde16c43ecb1a90a9102a103029e8e9b6d219d2babfea25caa5
[INFO] running `Command { std: "docker" "start" "-a" "790e4806c235cfde16c43ecb1a90a9102a103029e8e9b6d219d2babfea25caa5", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.200
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling cc v1.0.94
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]     Checking crossbeam-queue v0.3.11
[INFO] [stderr]     Checking half v2.4.1
[INFO] [stderr]     Checking plotters-backend v0.3.5
[INFO] [stderr]     Checking shell-words v1.1.0
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking fallible-iterator v0.3.0
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking ahash v0.8.11
[INFO] [stderr]     Checking plotters-svg v0.3.5
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking thousands v0.2.0
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking hashlink v0.9.1
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]    Compiling libsqlite3-sys v0.28.0
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]    Compiling serde_derive v1.0.200
[INFO] [stderr]    Compiling thiserror-impl v1.0.59
[INFO] [stderr]     Checking thiserror v1.0.59
[INFO] [stderr]     Checking dialoguer v0.11.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stderr]     Checking rusqlite v0.31.0
[INFO] [stderr]     Checking keylayout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `single_key_penalties` is never read
[INFO] [stdout]   --> src/genetic.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Genetic<'a> {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 25 |     single_key_penalties: &'a SingleKeyPenalties,
[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 `SubsetSeed` is never constructed
[INFO] [stdout]    --> src/key.rs:273:16
[INFO] [stdout]     |
[INFO] [stdout] 273 |     pub struct SubsetSeed {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/genetic.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |                         self.sender.send(StatusMessage::CalculatedEstimate);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |                         let _ = self.sender.send(StatusMessage::CalculatedEstimate);
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/genetic.rs:76:25
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         self.sender.send(StatusMessage::CalulatedPrecise);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         let _ = self.sender.send(StatusMessage::CalulatedPrecise);
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/key.rs:229:34
[INFO] [stdout]     |
[INFO] [stdout] 229 |                 letters_count >= size.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] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/keyboard.rs:398:32
[INFO] [stdout]     |
[INFO] [stdout] 396 |         &'a self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] 397 |         dictionary: &'a Dictionary,
[INFO] [stdout]     |                      -- the lifetime is named here
[INFO] [stdout] 398 |     ) -> impl Iterator<Item = (&Word, Penalty)> {
[INFO] [stdout]     |                                ^^^^^ the same 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 398 |     ) -> impl Iterator<Item = (&'a Word, Penalty)> {
[INFO] [stdout]     |                                 ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `keylayout` (lib) due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `single_key_penalties` is never read
[INFO] [stdout]   --> src/genetic.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Genetic<'a> {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 25 |     single_key_penalties: &'a SingleKeyPenalties,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/genetic.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |                         self.sender.send(StatusMessage::CalculatedEstimate);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |                         let _ = self.sender.send(StatusMessage::CalculatedEstimate);
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/genetic.rs:76:25
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         self.sender.send(StatusMessage::CalulatedPrecise);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         let _ = self.sender.send(StatusMessage::CalulatedPrecise);
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/key.rs:229:34
[INFO] [stdout]     |
[INFO] [stdout] 229 |                 letters_count >= size.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] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/keyboard.rs:398:32
[INFO] [stdout]     |
[INFO] [stdout] 396 |         &'a self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] 397 |         dictionary: &'a Dictionary,
[INFO] [stdout]     |                      -- the lifetime is named here
[INFO] [stdout] 398 |     ) -> impl Iterator<Item = (&Word, Penalty)> {
[INFO] [stdout]     |                                ^^^^^ the same 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 398 |     ) -> impl Iterator<Item = (&'a Word, Penalty)> {
[INFO] [stdout]     |                                 ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `keylayout` (lib test) due to 1 previous error; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "790e4806c235cfde16c43ecb1a90a9102a103029e8e9b6d219d2babfea25caa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "790e4806c235cfde16c43ecb1a90a9102a103029e8e9b6d219d2babfea25caa5", kill_on_drop: false }`
[INFO] [stdout] 790e4806c235cfde16c43ecb1a90a9102a103029e8e9b6d219d2babfea25caa5
