[INFO] fetching crate whatlang 0.16.4...
[INFO] checking whatlang-0.16.4 against try#0c7fed2b7584d310ca8221267fa1b3bec4df427f for pr-133502-4
[INFO] extracting crate whatlang 0.16.4 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate whatlang 0.16.4 on toolchain 0c7fed2b7584d310ca8221267fa1b3bec4df427f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0c7fed2b7584d310ca8221267fa1b3bec4df427f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate whatlang 0.16.4
[INFO] finished tweaking crates.io crate whatlang 0.16.4
[INFO] tweaked toml for crates.io crate whatlang 0.16.4 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate whatlang 0.16.4 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" "+0c7fed2b7584d310ca8221267fa1b3bec4df427f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+0c7fed2b7584d310ca8221267fa1b3bec4df427f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba48983ee650f4149099f283904d311ecda8b2cbbe3991c44ffc9efed728c20d
[INFO] running `Command { std: "docker" "start" "-a" "ba48983ee650f4149099f283904d311ecda8b2cbbe3991c44ffc9efed728c20d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba48983ee650f4149099f283904d311ecda8b2cbbe3991c44ffc9efed728c20d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba48983ee650f4149099f283904d311ecda8b2cbbe3991c44ffc9efed728c20d", kill_on_drop: false }`
[INFO] [stdout] ba48983ee650f4149099f283904d311ecda8b2cbbe3991c44ffc9efed728c20d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+0c7fed2b7584d310ca8221267fa1b3bec4df427f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfa864f9c70f9231be6bb1f13bf23a74d00f6d2eb351733c101786bd831cf842
[INFO] running `Command { std: "docker" "start" "-a" "dfa864f9c70f9231be6bb1f13bf23a74d00f6d2eb351733c101786bd831cf842", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.8.7
[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]     Checking allocator-api2 v0.2.16
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]     Checking arbitrary v1.2.0
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking whatlang v0.16.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `raw_scores` is never read
[INFO] [stdout]   --> src/alphabets/mod.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct RawOutcome {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 43 |     pub count: usize,
[INFO] [stdout] 44 |     pub raw_scores: Vec<(Lang, usize)>,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RawOutcome` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `alphabet_raw_outcome` is never read
[INFO] [stdout]  --> src/combined/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct RawOutcome {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 8 |     pub scores: Vec<(Lang, f64)>,
[INFO] [stdout] 9 |     pub alphabet_raw_outcome: alphabets::RawOutcome,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RawOutcome` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `raw_distances` is never read
[INFO] [stdout]   --> src/trigrams/detection.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct RawOutcome {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 13 |     pub trigrams_count: usize,
[INFO] [stdout] 14 |     pub raw_distances: Vec<(Lang, u32)>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RawOutcome` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking arbtest v0.2.0
[INFO] [stdout] error: couldn't read `benches/example.rs`: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `whatlang` (bench "example") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `alphabet_raw_outcome` is never read
[INFO] [stdout]  --> src/combined/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct RawOutcome {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 8 |     pub scores: Vec<(Lang, f64)>,
[INFO] [stdout] 9 |     pub alphabet_raw_outcome: alphabets::RawOutcome,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RawOutcome` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `raw_distances` is never read
[INFO] [stdout]   --> src/trigrams/detection.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct RawOutcome {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 13 |     pub trigrams_count: usize,
[INFO] [stdout] 14 |     pub raw_distances: Vec<(Lang, u32)>,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RawOutcome` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dfa864f9c70f9231be6bb1f13bf23a74d00f6d2eb351733c101786bd831cf842", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfa864f9c70f9231be6bb1f13bf23a74d00f6d2eb351733c101786bd831cf842", kill_on_drop: false }`
[INFO] [stdout] dfa864f9c70f9231be6bb1f13bf23a74d00f6d2eb351733c101786bd831cf842