[INFO] fetching crate lexington 0.3.0...
[INFO] checking lexington-0.3.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate lexington 0.3.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate lexington 0.3.0 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 }`
[INFO] started tweaking crates.io crate lexington 0.3.0
[INFO] finished tweaking crates.io crate lexington 0.3.0
[INFO] tweaked toml for crates.io crate lexington 0.3.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 }`
[INFO] [stdout] a34deda169febbfcb282d9eceb6f45b796f8429eab3ae14d65f76bfa059f5231
[INFO] running `Command { std: "docker" "start" "-a" "a34deda169febbfcb282d9eceb6f45b796f8429eab3ae14d65f76bfa059f5231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a34deda169febbfcb282d9eceb6f45b796f8429eab3ae14d65f76bfa059f5231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a34deda169febbfcb282d9eceb6f45b796f8429eab3ae14d65f76bfa059f5231", kill_on_drop: false }`
[INFO] [stdout] a34deda169febbfcb282d9eceb6f45b796f8429eab3ae14d65f76bfa059f5231
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 }`
[INFO] [stdout] 33e67ae412fa383765f64499edd44dc8442c9acf69a0885222e26d4d2a55897d
[INFO] running `Command { std: "docker" "start" "-a" "33e67ae412fa383765f64499edd44dc8442c9acf69a0885222e26d4d2a55897d", kill_on_drop: false }`
[INFO] [stderr]     Checking lexington v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> tests/lisp.rs:1:49
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lexington::{Any,Lexer,Match,Matcher,Scanner,Token,Within};
[INFO] [stdout]   |                                                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lisp.rs:55:17
[INFO] [stdout]     |
[INFO] [stdout] 55  |             let mut v = Vec::new();
[INFO] [stdout]     |                 ----^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 111 |     check_ok("()",list![]);
[INFO] [stdout]     |                   ------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `list` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LogicalNegation` is never used
[INFO] [stdout]   --> tests/logic.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait LogicalNegation {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `not` is never used
[INFO] [stdout]    --> tests/logic.rs:173:12
[INFO] [stdout]     |
[INFO] [stdout] 111 | impl Formula {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 173 |     pub fn not(&mut self) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LogicalNot` is never constructed
[INFO] [stdout]    --> tests/logic.rs:328:5
[INFO] [stdout]     |
[INFO] [stdout] 319 | enum Kind {
[INFO] [stdout]     |      ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 328 |     LogicalNot,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Kind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "33e67ae412fa383765f64499edd44dc8442c9acf69a0885222e26d4d2a55897d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33e67ae412fa383765f64499edd44dc8442c9acf69a0885222e26d4d2a55897d", kill_on_drop: false }`
[INFO] [stdout] 33e67ae412fa383765f64499edd44dc8442c9acf69a0885222e26d4d2a55897d