[INFO] fetching crate amen 0.0.3...
[INFO] checking amen-0.0.3 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate amen 0.0.3 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate amen 0.0.3
[INFO] finished tweaking crates.io crate amen 0.0.3
[INFO] tweaked toml for crates.io crate amen 0.0.3 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate amen 0.0.3 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate amen 0.0.3 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fid-rs v0.1.1
[INFO] [stderr]   Downloaded louds-rs v0.4.0
[INFO] [stderr]   Downloaded trie-rs v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ce4bc3983103972d011c296c769450250649ceb4757e4076fbad4be9fa79575
[INFO] running `Command { std: "docker" "start" "-a" "4ce4bc3983103972d011c296c769450250649ceb4757e4076fbad4be9fa79575", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ce4bc3983103972d011c296c769450250649ceb4757e4076fbad4be9fa79575", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ce4bc3983103972d011c296c769450250649ceb4757e4076fbad4be9fa79575", kill_on_drop: false }`
[INFO] [stdout] 4ce4bc3983103972d011c296c769450250649ceb4757e4076fbad4be9fa79575
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b28c4dc2347e7582d72e4699f9820778e58534b0534810040ebe6ad02aef04ef
[INFO] running `Command { std: "docker" "start" "-a" "b28c4dc2347e7582d72e4699f9820778e58534b0534810040ebe6ad02aef04ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking fid-rs v0.1.1
[INFO] [stderr]     Checking louds-rs v0.4.0
[INFO] [stderr]     Checking trie-rs v0.1.1
[INFO] [stderr]     Checking amen v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `abbrev` is never read
[INFO] [stdout]  --> src/abbrev.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct AbbrevPhrase<'a> {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 5 |     pub phrase: &'a str,
[INFO] [stdout] 6 |     pub abbrev: String,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `abbrev` is never read
[INFO] [stdout]  --> src/abbrev.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct AbbrevPhrase<'a> {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 5 |     pub phrase: &'a str,
[INFO] [stdout] 6 |     pub abbrev: String,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.02s
[INFO] running `Command { std: "docker" "inspect" "b28c4dc2347e7582d72e4699f9820778e58534b0534810040ebe6ad02aef04ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b28c4dc2347e7582d72e4699f9820778e58534b0534810040ebe6ad02aef04ef", kill_on_drop: false }`
[INFO] [stdout] b28c4dc2347e7582d72e4699f9820778e58534b0534810040ebe6ad02aef04ef