[INFO] fetching crate libslide 0.0.1...
[INFO] checking libslide-0.0.1 against 1af98b7cdf86932b76182a387f52f1be6f0c1be0 for pr-159706
[INFO] extracting crate libslide 0.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate libslide 0.0.1
[INFO] finished tweaking crates.io crate libslide 0.0.1
[INFO] tweaked toml for crates.io crate libslide 0.0.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate libslide 0.0.1 on toolchain 1af98b7cdf86932b76182a387f52f1be6f0c1be0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1af98b7cdf86932b76182a387f52f1be6f0c1be0" "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" "+1af98b7cdf86932b76182a387f52f1be6f0c1be0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 73 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.8.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1af98b7cdf86932b76182a387f52f1be6f0c1be0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rug v1.30.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e3b51c7165a8c70a7fd4bfdd0d5b3fb6e0eab97cd9b94da6054a3096c5d661b9
[INFO] running `Command { std: "docker" "start" "e3b51c7165a8c70a7fd4bfdd0d5b3fb6e0eab97cd9b94da6054a3096c5d661b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3b51c7165a8c70a7fd4bfdd0d5b3fb6e0eab97cd9b94da6054a3096c5d661b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e3b51c7165a8c70a7fd4bfdd0d5b3fb6e0eab97cd9b94da6054a3096c5d661b9" "/opt/rustwide/cargo-home/bin/cargo" "+1af98b7cdf86932b76182a387f52f1be6f0c1be0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3b51c7165a8c70a7fd4bfdd0d5b3fb6e0eab97cd9b94da6054a3096c5d661b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e3b51c7165a8c70a7fd4bfdd0d5b3fb6e0eab97cd9b94da6054a3096c5d661b9" "/opt/rustwide/cargo-home/bin/cargo" "+1af98b7cdf86932b76182a387f52f1be6f0c1be0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.7.1
[INFO] [stderr]     Checking either v1.17.0
[INFO] [stderr]    Compiling rug v1.30.0
[INFO] [stderr]     Checking csv-core v0.1.13
[INFO] [stderr]     Checking regex-automata v0.4.18
[INFO] [stderr]     Checking az v1.3.0
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rayon v1.12.0
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking regex v1.13.1
[INFO] [stderr]     Checking serde v1.0.229
[INFO] [stderr]     Checking serde_json v1.0.151
[INFO] [stderr]     Checking csv v1.4.0
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stderr]     Checking libslide v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `test::*`
[INFO] [stdout]   --> src/utils.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use test::*;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `test::*`
[INFO] [stdout]   --> src/utils.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use test::*;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PeekingTakeWhile` is never constructed
[INFO] [stdout]   --> src/utils/iter.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct PeekingTakeWhile<'a, T, P>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PeekingTakeWhile` is never constructed
[INFO] [stdout]   --> src/utils/iter.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct PeekingTakeWhile<'a, T, P>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 44s
[INFO] running `Command { std: "docker" "inspect" "e3b51c7165a8c70a7fd4bfdd0d5b3fb6e0eab97cd9b94da6054a3096c5d661b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3b51c7165a8c70a7fd4bfdd0d5b3fb6e0eab97cd9b94da6054a3096c5d661b9", kill_on_drop: false }`
[INFO] [stdout] e3b51c7165a8c70a7fd4bfdd0d5b3fb6e0eab97cd9b94da6054a3096c5d661b9