[INFO] cloning repository https://github.com/bitwalker/litcheck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bitwalker/litcheck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitwalker%2Flitcheck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitwalker%2Flitcheck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e6f3b3c1f78c79330c7b72f97a6ddc30e41880b
[INFO] checking bitwalker/litcheck/6e6f3b3c1f78c79330c7b72f97a6ddc30e41880b against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitwalker%2Flitcheck" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bitwalker/litcheck on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
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[INFO] started tweaking git repo https://github.com/bitwalker/litcheck
[INFO] finished tweaking git repo https://github.com/bitwalker/litcheck
[INFO] tweaked toml for git repo https://github.com/bitwalker/litcheck written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bitwalker/litcheck 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]     Updating litcheck v0.2.1 (/workspace/builds/worker-6-tc1/source/litcheck) -> v0.2.2
[INFO] [stderr]     Updating litcheck-core v0.2.1 (/workspace/builds/worker-6-tc1/source/core) -> v0.2.2
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[INFO] [stderr]     Updating litcheck-lit v0.2.1 (/workspace/builds/worker-6-tc1/source/lit) -> v0.2.2
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bstr v1.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "21594c4f26ce78a50c9e31f1b484a9005c8605c063402cee909d391282da6890", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "72f7edfa53a0eda8085517e69205b22b836e558b263b0f6ec80e4a8880af57ba", kill_on_drop: false }`
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[INFO] [stdout] warning: field `prefix` is never read
[INFO] [stdout]   --> filecheck/src/parse/lexer/patterns.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Pattern {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 10 |     pub raw: String,
[INFO] [stdout] 11 |     pub prefix: Prefix,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Pattern` 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: field `prefix` is never read
[INFO] [stdout]   --> filecheck/src/parse/lexer/patterns.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Pattern {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 10 |     pub raw: String,
[INFO] [stdout] 11 |     pub prefix: Prefix,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Pattern` 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]     Checking litcheck v0.2.2 (/opt/rustwide/workdir/litcheck)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.94s
[INFO] running `Command { std: "docker" "inspect" "72f7edfa53a0eda8085517e69205b22b836e558b263b0f6ec80e4a8880af57ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72f7edfa53a0eda8085517e69205b22b836e558b263b0f6ec80e4a8880af57ba", kill_on_drop: false }`
[INFO] [stdout] 72f7edfa53a0eda8085517e69205b22b836e558b263b0f6ec80e4a8880af57ba