[INFO] fetching crate whatlang 0.16.4...
[INFO] building whatlang-0.16.4 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate whatlang 0.16.4 into /workspace/builds/worker-7-tc1/source
[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-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate whatlang 0.16.4 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-map v2.1.0
[INFO] [stderr]   Downloaded itoa v1.0.4
[INFO] [stderr]   Downloaded enum-map-derive v0.8.0
[INFO] [stderr]   Downloaded derive_arbitrary v1.2.0
[INFO] [stderr]   Downloaded arbitrary v1.2.0
[INFO] [stderr]   Downloaded serde v1.0.147
[INFO] [stderr]   Downloaded syn v2.0.47
[INFO] [stderr]   Downloaded serde_json v1.0.87
[INFO] [stderr]   Downloaded bencher v0.1.5
[INFO] [stderr]   Downloaded arbtest v0.2.0
[INFO] [stderr]   Downloaded serde_derive v1.0.147
[INFO] [stderr]   Downloaded syn v1.0.103
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d4eca8d213e9f30a2c9da0792bc17625a712d7677b649b6ea8cb2ba2bfd7693
[INFO] running `Command { std: "docker" "start" "-a" "3d4eca8d213e9f30a2c9da0792bc17625a712d7677b649b6ea8cb2ba2bfd7693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d4eca8d213e9f30a2c9da0792bc17625a712d7677b649b6ea8cb2ba2bfd7693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d4eca8d213e9f30a2c9da0792bc17625a712d7677b649b6ea8cb2ba2bfd7693", kill_on_drop: false }`
[INFO] [stdout] 3d4eca8d213e9f30a2c9da0792bc17625a712d7677b649b6ea8cb2ba2bfd7693
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d036bda2bb22ea6629443e3ca5c10026f344c12ce2c4f2a0026d83df79c1f64
[INFO] running `Command { std: "docker" "start" "-a" "3d036bda2bb22ea6629443e3ca5c10026f344c12ce2c4f2a0026d83df79c1f64", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.8.7
[INFO] [stderr]    Compiling zerocopy v0.7.32
[INFO] [stderr]    Compiling allocator-api2 v0.2.16
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "3d036bda2bb22ea6629443e3ca5c10026f344c12ce2c4f2a0026d83df79c1f64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d036bda2bb22ea6629443e3ca5c10026f344c12ce2c4f2a0026d83df79c1f64", kill_on_drop: false }`
[INFO] [stdout] 3d036bda2bb22ea6629443e3ca5c10026f344c12ce2c4f2a0026d83df79c1f64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5165420e5b66c7207d86e92199771265f97d566dcf8ab6db2d9a93c09c4597dc
[INFO] running `Command { std: "docker" "start" "-a" "5165420e5b66c7207d86e92199771265f97d566dcf8ab6db2d9a93c09c4597dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]    Compiling itoa v1.0.4
[INFO] [stderr]    Compiling arbitrary v1.2.0
[INFO] [stderr]    Compiling bencher v0.1.5
[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)]` (part of `#[warn(unused)]`) 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]    Compiling arbtest v0.2.0
[INFO] [stderr]    Compiling whatlang v0.16.4 (/opt/rustwide/workdir)
[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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `Command { std: "docker" "inspect" "5165420e5b66c7207d86e92199771265f97d566dcf8ab6db2d9a93c09c4597dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5165420e5b66c7207d86e92199771265f97d566dcf8ab6db2d9a93c09c4597dc", kill_on_drop: false }`
[INFO] [stdout] 5165420e5b66c7207d86e92199771265f97d566dcf8ab6db2d9a93c09c4597dc