[INFO] fetching crate idlset 0.2.0...
[INFO] checking idlset-0.2.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate idlset 0.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate idlset 0.2.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate idlset 0.2.0
[INFO] finished tweaking crates.io crate idlset 0.2.0
[INFO] tweaked toml for crates.io crate idlset 0.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6aedff4e130cc694f16fb5a1a926775e2af472e24222d8699ac061f88f1cdc4f
[INFO] running `Command { std: "docker" "start" "-a" "6aedff4e130cc694f16fb5a1a926775e2af472e24222d8699ac061f88f1cdc4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aedff4e130cc694f16fb5a1a926775e2af472e24222d8699ac061f88f1cdc4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aedff4e130cc694f16fb5a1a926775e2af472e24222d8699ac061f88f1cdc4f", kill_on_drop: false }`
[INFO] [stdout] 6aedff4e130cc694f16fb5a1a926775e2af472e24222d8699ac061f88f1cdc4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 431153902a37762e1786af5406711b69f2561a9c0c9882c03afc96239f5cdee2
[INFO] running `Command { std: "docker" "start" "-a" "431153902a37762e1786af5406711b69f2561a9c0c9882c03afc96239f5cdee2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crossbeam-utils v0.8.5
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stderr]     Checking idlset v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::IDLSimple`
[INFO] [stdout]    --> benches/idl_simple.rs:213:9
[INFO] [stdout]     |
[INFO] [stdout] 213 |     use super::IDLSimple;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `idlset::AndNot`
[INFO] [stdout]    --> benches/idl_simple.rs:214:9
[INFO] [stdout]     |
[INFO] [stdout] 214 |     use idlset::AndNot;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]    --> benches/idl_simple.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 215 |     use std::iter::FromIterator;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.13s
[INFO] running `Command { std: "docker" "inspect" "431153902a37762e1786af5406711b69f2561a9c0c9882c03afc96239f5cdee2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "431153902a37762e1786af5406711b69f2561a9c0c9882c03afc96239f5cdee2", kill_on_drop: false }`
[INFO] [stdout] 431153902a37762e1786af5406711b69f2561a9c0c9882c03afc96239f5cdee2