[INFO] fetching crate par-dfs 0.0.7...
[INFO] checking par-dfs-0.0.7 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate par-dfs 0.0.7 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate par-dfs 0.0.7 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate par-dfs 0.0.7
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate par-dfs 0.0.7
[INFO] tweaked toml for crates.io crate par-dfs 0.0.7 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate par-dfs 0.0.7 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08e9453a296c7e392fc61645a5202d5b1cde77b618bc0f6de81ab005a2e8cc7a
[INFO] running `Command { std: "docker" "start" "-a" "08e9453a296c7e392fc61645a5202d5b1cde77b618bc0f6de81ab005a2e8cc7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08e9453a296c7e392fc61645a5202d5b1cde77b618bc0f6de81ab005a2e8cc7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08e9453a296c7e392fc61645a5202d5b1cde77b618bc0f6de81ab005a2e8cc7a", kill_on_drop: false }`
[INFO] [stdout] 08e9453a296c7e392fc61645a5202d5b1cde77b618bc0f6de81ab005a2e8cc7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae1ee8aac0d4fc1210e99d082321f6ada1d3968de26f2ab418688762b00e2bee
[INFO] running `Command { std: "docker" "start" "-a" "ae1ee8aac0d4fc1210e99d082321f6ada1d3968de26f2ab418688762b00e2bee", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling memoffset v0.6.5
[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 proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[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 indexmap v1.9.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking ciborium-io v0.2.0
[INFO] [stderr]     Checking clap_lex v0.2.4
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[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ciborium-ll v0.2.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]    Compiling anyhow v1.0.64
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking plotters v0.3.4
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking futures v0.3.24
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.34
[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 thiserror v1.0.34
[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 v3.2.21
[INFO] [stderr]     Checking tokio-stream v0.1.9
[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: 1 warning 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 39.69s
[INFO] running `Command { std: "docker" "inspect" "ae1ee8aac0d4fc1210e99d082321f6ada1d3968de26f2ab418688762b00e2bee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae1ee8aac0d4fc1210e99d082321f6ada1d3968de26f2ab418688762b00e2bee", kill_on_drop: false }`
[INFO] [stdout] ae1ee8aac0d4fc1210e99d082321f6ada1d3968de26f2ab418688762b00e2bee