[INFO] fetching crate choir 0.7.0...
[INFO] checking choir-0.7.0 against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] extracting crate choir 0.7.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate choir 0.7.0
[INFO] finished tweaking crates.io crate choir 0.7.0
[INFO] tweaked toml for crates.io crate choir 0.7.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate choir 0.7.0 on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 91 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.7.0)
[INFO] [stderr]       Adding env_logger v0.9.3 (available: v0.11.8)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35ba441089b5a58a56d8035dba80b4d693bf8443604bc4c37394b7344c491149
[INFO] running `Command { std: "docker" "start" "-a" "35ba441089b5a58a56d8035dba80b4d693bf8443604bc4c37394b7344c491149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35ba441089b5a58a56d8035dba80b4d693bf8443604bc4c37394b7344c491149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35ba441089b5a58a56d8035dba80b4d693bf8443604bc4c37394b7344c491149", kill_on_drop: false }`
[INFO] [stdout] 35ba441089b5a58a56d8035dba80b4d693bf8443604bc4c37394b7344c491149
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a2b6fddb107bbe4fbf800ccceb2084c936613f41a6bb066e3a2165004138574
[INFO] running `Command { std: "docker" "start" "-a" "7a2b6fddb107bbe4fbf800ccceb2084c936613f41a6bb066e3a2165004138574", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]     Checking regex-syntax v0.8.6
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking half v2.6.0
[INFO] [stderr]     Checking ryu v1.0.20
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking clap_lex v0.7.5
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking itoa v1.0.15
[INFO] [stderr]     Checking anstyle v1.0.11
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking clap_builder v4.5.44
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking is-terminal v0.4.16
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking rayon v1.11.0
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking regex-automata v0.4.10
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking humantime v2.2.0
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking oorandom v11.1.5
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking clap v4.5.45
[INFO] [stderr]     Checking regex v1.11.2
[INFO] [stderr]     Checking env_logger v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling profiling-procmacros v1.0.17
[INFO] [stderr]     Checking profiling v1.0.17
[INFO] [stderr]     Checking choir v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]   --> src/lib.rs:54:28
[INFO] [stdout]    |
[INFO] [stdout] 54 | const MAX_WORKERS: usize = mem::size_of::<usize>() * BITS_PER_BYTE;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     unused_qualifications,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]    |
[INFO] [stdout] 54 - const MAX_WORKERS: usize = mem::size_of::<usize>() * BITS_PER_BYTE;
[INFO] [stdout] 54 + const MAX_WORKERS: usize = size_of::<usize>() * BITS_PER_BYTE;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:129:32
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn fork<N: Into<Name>>(&self, name: N) -> ProtoTask {
[INFO] [stdout]     |                                ^^^^^              --------- the same lifetime is hidden here
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn fork<N: Into<Name>>(&self, name: N) -> ProtoTask<'_> {
[INFO] [stdout]     |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/lib.rs:709:17
[INFO] [stdout]     |
[INFO] [stdout] 709 |             let _ = condvar.wait_while(guard, |cont| cont.is_some());
[INFO] [stdout]     |                 ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 709 |             let _unused = condvar.wait_while(guard, |cont| cont.is_some());
[INFO] [stdout]     |                  ++++++
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 709 -             let _ = condvar.wait_while(guard, |cont| cont.is_some());
[INFO] [stdout] 709 +             drop(condvar.wait_while(guard, |cont| cont.is_some()));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `choir` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7a2b6fddb107bbe4fbf800ccceb2084c936613f41a6bb066e3a2165004138574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a2b6fddb107bbe4fbf800ccceb2084c936613f41a6bb066e3a2165004138574", kill_on_drop: false }`
[INFO] [stdout] 7a2b6fddb107bbe4fbf800ccceb2084c936613f41a6bb066e3a2165004138574
