[INFO] fetching crate rarity 0.3.0...
[INFO] checking rarity-0.3.0 against try#24cd45d7714ba43afd4b8e62fb677b069b21c4a5 for pr-129543
[INFO] extracting crate rarity 0.3.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate rarity 0.3.0 on toolchain 24cd45d7714ba43afd4b8e62fb677b069b21c4a5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rarity 0.3.0
[INFO] finished tweaking crates.io crate rarity 0.3.0
[INFO] tweaked toml for crates.io crate rarity 0.3.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 43 packages to latest compatible versions
[INFO] [stderr]       Adding bit-set v0.5.3 (latest: v0.8.0)
[INFO] [stderr]       Adding bit-vec v0.6.3 (latest: v0.8.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.1.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.4.0)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (latest: v0.4.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11a8f1d7e6a242a83c235d70661b3d95936f9f507771965d2bcd9f7b0a9fb168
[INFO] running `Command { std: "docker" "start" "-a" "11a8f1d7e6a242a83c235d70661b3d95936f9f507771965d2bcd9f7b0a9fb168", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11a8f1d7e6a242a83c235d70661b3d95936f9f507771965d2bcd9f7b0a9fb168", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11a8f1d7e6a242a83c235d70661b3d95936f9f507771965d2bcd9f7b0a9fb168", kill_on_drop: false }`
[INFO] [stdout] 11a8f1d7e6a242a83c235d70661b3d95936f9f507771965d2bcd9f7b0a9fb168
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7861e7c45094a4293a9f90712857998dd316aa8adf3325ededc1c6181d9d9ce
[INFO] running `Command { std: "docker" "start" "-a" "f7861e7c45094a4293a9f90712857998dd316aa8adf3325ededc1c6181d9d9ce", kill_on_drop: false }`
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]    Compiling camino v1.1.9
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking unicode-id v0.3.4
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking cpufeatures v0.2.13
[INFO] [stderr]     Checking serde v1.0.209
[INFO] [stderr]     Checking markdown v1.0.0-alpha.20
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking terminal_color_builder v0.1.1
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]    Compiling indoc v2.0.5
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]     Checking fancy-regex v0.13.0
[INFO] [stderr]     Checking rarity v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `identifier` and `count` are never read
[INFO] [stdout]   --> src/word_stats.rs:18:2
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct WordResult {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 18 |     identifier: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 19 |     count: usize,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WordResult` 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `identifier` and `count` are never read
[INFO] [stdout]   --> src/word_stats.rs:18:2
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct WordResult {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 18 |     identifier: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 19 |     count: usize,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WordResult` 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.16s
[INFO] running `Command { std: "docker" "inspect" "f7861e7c45094a4293a9f90712857998dd316aa8adf3325ededc1c6181d9d9ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7861e7c45094a4293a9f90712857998dd316aa8adf3325ededc1c6181d9d9ce", kill_on_drop: false }`
[INFO] [stdout] f7861e7c45094a4293a9f90712857998dd316aa8adf3325ededc1c6181d9d9ce