[INFO] fetching crate rex-regex 0.1.4...
[INFO] checking rex-regex-0.1.4 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate rex-regex 0.1.4 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate rex-regex 0.1.4 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rex-regex 0.1.4
[INFO] finished tweaking crates.io crate rex-regex 0.1.4
[INFO] tweaked toml for crates.io crate rex-regex 0.1.4 written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adaa4f360367c6f9961b2f340404216034c1d064c9003d1ee362aef3ea7a01f3
[INFO] running `Command { std: "docker" "start" "-a" "adaa4f360367c6f9961b2f340404216034c1d064c9003d1ee362aef3ea7a01f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adaa4f360367c6f9961b2f340404216034c1d064c9003d1ee362aef3ea7a01f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adaa4f360367c6f9961b2f340404216034c1d064c9003d1ee362aef3ea7a01f3", kill_on_drop: false }`
[INFO] [stdout] adaa4f360367c6f9961b2f340404216034c1d064c9003d1ee362aef3ea7a01f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93c1ee5c9a825bf826c23fcfd37af1e8600405f90a9a346716c24ed5f68e7068
[INFO] running `Command { std: "docker" "start" "-a" "93c1ee5c9a825bf826c23fcfd37af1e8600405f90a9a346716c24ed5f68e7068", kill_on_drop: false }`
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking rex-regex v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/matching.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/matching.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.83s
[INFO] running `Command { std: "docker" "inspect" "93c1ee5c9a825bf826c23fcfd37af1e8600405f90a9a346716c24ed5f68e7068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93c1ee5c9a825bf826c23fcfd37af1e8600405f90a9a346716c24ed5f68e7068", kill_on_drop: false }`
[INFO] [stdout] 93c1ee5c9a825bf826c23fcfd37af1e8600405f90a9a346716c24ed5f68e7068