[INFO] fetching crate ustr 1.1.0...
[INFO] checking ustr-1.1.0 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate ustr 1.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate ustr 1.1.0
[INFO] finished tweaking crates.io crate ustr 1.1.0
[INFO] tweaked toml for crates.io crate ustr 1.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ustr 1.1.0 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 109 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.4.0 (available: v0.7.0)
[INFO] [stderr]       Adding string-interner v0.13.0 (available: v0.19.0)
[INFO] [stderr]       Adding string_cache v0.8.9 (available: v0.9.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded string-interner v0.13.0
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad9a40ba8a6cc28f84baee1ca7336f8a2bc8ef6c6560eca0dc3fb605c40ace5c
[INFO] running `Command { std: "docker" "start" "-a" "ad9a40ba8a6cc28f84baee1ca7336f8a2bc8ef6c6560eca0dc3fb605c40ace5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad9a40ba8a6cc28f84baee1ca7336f8a2bc8ef6c6560eca0dc3fb605c40ace5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad9a40ba8a6cc28f84baee1ca7336f8a2bc8ef6c6560eca0dc3fb605c40ace5c", kill_on_drop: false }`
[INFO] [stdout] ad9a40ba8a6cc28f84baee1ca7336f8a2bc8ef6c6560eca0dc3fb605c40ace5c
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 620fc46a9bacdfb18dbc96ffa1ec52e1cc03b45c11ce7bd3ca3a83bd6d7c68ed
[INFO] running `Command { std: "docker" "start" "-a" "620fc46a9bacdfb18dbc96ffa1ec52e1cc03b45c11ce7bd3ca3a83bd6d7c68ed", kill_on_drop: false }`
[INFO] [stderr]     Checking ahash v0.7.8
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking phf_shared v0.11.3
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stderr]     Checking string_cache v0.8.9
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking ustr v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking string-interner v0.13.0
[INFO] [stdout] warning: unused import: `lazy_static::lazy_static`
[INFO] [stdout]    --> src/lib.rs:819:9
[INFO] [stdout]     |
[INFO] [stdout] 819 |     use lazy_static::lazy_static;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]    --> src/lib.rs:822:9
[INFO] [stdout]     |
[INFO] [stdout] 822 |     use std::sync::Mutex;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.48s
[INFO] running `Command { std: "docker" "inspect" "620fc46a9bacdfb18dbc96ffa1ec52e1cc03b45c11ce7bd3ca3a83bd6d7c68ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "620fc46a9bacdfb18dbc96ffa1ec52e1cc03b45c11ce7bd3ca3a83bd6d7c68ed", kill_on_drop: false }`
[INFO] [stdout] 620fc46a9bacdfb18dbc96ffa1ec52e1cc03b45c11ce7bd3ca3a83bd6d7c68ed