[INFO] cloning repository https://github.com/romnn/par-dfs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/romnn/par-dfs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromnn%2Fpar-dfs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromnn%2Fpar-dfs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c22c599e7ea71282e398617cb3c0709faf3df3f4
[INFO] checking romnn/par-dfs against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromnn%2Fpar-dfs" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/romnn/par-dfs on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/romnn/par-dfs
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/romnn/par-dfs
[INFO] tweaked toml for git repo https://github.com/romnn/par-dfs written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/romnn/par-dfs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded output_vt100 v0.1.3
[INFO] [stderr]   Downloaded async-stream-impl v0.3.3
[INFO] [stderr]   Downloaded async-stream v0.3.3
[INFO] [stderr]   Downloaded tokio-stream v0.1.10
[INFO] [stderr]   Downloaded pretty_assertions v1.3.0
[INFO] [stderr]   Downloaded tokio-test v0.4.2
[INFO] [stderr]   Downloaded syn v1.0.100
[INFO] [stderr]   Downloaded tokio v1.21.1
[INFO] [stderr]   Downloaded libc v0.2.133
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78409633e321c02d1d374cf512b5ee96716dbd3f7287c59f1dcdf686c7986ff4
[INFO] running `Command { std: "docker" "start" "-a" "78409633e321c02d1d374cf512b5ee96716dbd3f7287c59f1dcdf686c7986ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78409633e321c02d1d374cf512b5ee96716dbd3f7287c59f1dcdf686c7986ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78409633e321c02d1d374cf512b5ee96716dbd3f7287c59f1dcdf686c7986ff4", kill_on_drop: false }`
[INFO] [stdout] 78409633e321c02d1d374cf512b5ee96716dbd3f7287c59f1dcdf686c7986ff4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b4c9116201ab58c9df69b1e7e1a01c4db0820c35b452a7aba96a851f4ed65ff
[INFO] running `Command { std: "docker" "start" "-a" "7b4c9116201ab58c9df69b1e7e1a01c4db0820c35b452a7aba96a851f4ed65ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling syn v1.0.100
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling libc v0.2.133
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling tokio v1.21.1
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling thiserror v1.0.35
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]     Checking ciborium-io v0.2.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking ciborium-ll v0.2.0
[INFO] [stderr]     Checking plotters-svg v0.3.3
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking textwrap v0.15.1
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking plotters v0.3.4
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking futures v0.3.24
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.35
[INFO] [stderr]    Compiling clap_derive v3.2.18
[INFO] [stderr]    Compiling async-stream-impl v0.3.3
[INFO] [stderr]     Checking async-stream v0.3.3
[INFO] [stderr]     Checking par-dfs v0.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `len`, `is_empty`, and `split_off` are never used
[INFO] [stdout]   --> src/sync/mod.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) trait Queue<I, E> {
[INFO] [stdout]    |                  ----- methods in this trait
[INFO] [stdout] 35 |     /// Returns the number of items in the queue
[INFO] [stdout] 36 |     fn len(&self) -> usize;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn is_empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn split_off(&mut self, at: usize) -> Self;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking clap v3.2.22
[INFO] [stderr]     Checking tokio-stream v0.1.10
[INFO] [stderr]     Checking tokio-test v0.4.2
[INFO] [stderr]     Checking ciborium v0.2.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] warning: unused import: `sync_collatz::*`
[INFO] [stdout]    --> benches/benches.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 | pub use sync_collatz::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> benches/benches.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 Some((depth, Ok(n))) => {
[INFO] [stdout]    |                 -------------------- matches all the relevant values
[INFO] [stdout] ...
[INFO] [stdout] 70 |                 Some((_, n)) => Some(n),
[INFO] [stdout]    |                 ^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `len`, `is_empty`, and `split_off` are never used
[INFO] [stdout]   --> src/sync/mod.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) trait Queue<I, E> {
[INFO] [stdout]    |                  ----- methods in this trait
[INFO] [stdout] 35 |     /// Returns the number of items in the queue
[INFO] [stdout] 36 |     fn len(&self) -> usize;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn is_empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn split_off(&mut self, at: usize) -> Self;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.58s
[INFO] running `Command { std: "docker" "inspect" "7b4c9116201ab58c9df69b1e7e1a01c4db0820c35b452a7aba96a851f4ed65ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b4c9116201ab58c9df69b1e7e1a01c4db0820c35b452a7aba96a851f4ed65ff", kill_on_drop: false }`
[INFO] [stdout] 7b4c9116201ab58c9df69b1e7e1a01c4db0820c35b452a7aba96a851f4ed65ff