[INFO] fetching crate messaging_thread_pool 3.1.0...
[INFO] checking messaging_thread_pool-3.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate messaging_thread_pool 3.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate messaging_thread_pool 3.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate messaging_thread_pool 3.1.0
[INFO] finished tweaking crates.io crate messaging_thread_pool 3.1.0
[INFO] tweaked toml for crates.io crate messaging_thread_pool 3.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 96 packages
[INFO] [stderr]       Adding anes v0.1.6 (latest: v0.2.0)
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[INFO] [stderr]       Adding criterion v0.4.0 (latest: v0.5.1)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
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[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (latest: v0.50.0)
[INFO] [stderr]       Adding os_str_bytes v6.6.1 (latest: v7.0.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-appender v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f0d584b494b863ed2bbc13106b78ef4db5cfc1b75b51ebc3798d582473cdf72
[INFO] running `Command { std: "docker" "start" "-a" "9f0d584b494b863ed2bbc13106b78ef4db5cfc1b75b51ebc3798d582473cdf72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f0d584b494b863ed2bbc13106b78ef4db5cfc1b75b51ebc3798d582473cdf72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f0d584b494b863ed2bbc13106b78ef4db5cfc1b75b51ebc3798d582473cdf72", kill_on_drop: false }`
[INFO] [stdout] 9f0d584b494b863ed2bbc13106b78ef4db5cfc1b75b51ebc3798d582473cdf72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 677104a5b621053a8115792d858c1162ba02edb05db677af45f31e54774857cc
[INFO] running `Command { std: "docker" "start" "-a" "677104a5b621053a8115792d858c1162ba02edb05db677af45f31e54774857cc", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tracing-appender v0.2.3
[INFO] [stderr]     Checking messaging_thread_pool v3.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `GuardDrop` is imported redundantly
[INFO] [stdout]  --> src/samples/randoms/pool_item.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     guard_drop::GuardDrop,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 |     samples::{MeanResponse, RandomsAddRequest, SumResponse},
[INFO] [stdout] 5 |     *,
[INFO] [stdout]   |     - the item `GuardDrop` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `GuardDrop` is imported redundantly
[INFO] [stdout]  --> src/samples/randoms/pool_item.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     guard_drop::GuardDrop,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 |     samples::{MeanResponse, RandomsAddRequest, SumResponse},
[INFO] [stdout] 5 |     *,
[INFO] [stdout]   |     - the item `GuardDrop` is already imported here
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.56s
[INFO] running `Command { std: "docker" "inspect" "677104a5b621053a8115792d858c1162ba02edb05db677af45f31e54774857cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "677104a5b621053a8115792d858c1162ba02edb05db677af45f31e54774857cc", kill_on_drop: false }`
[INFO] [stdout] 677104a5b621053a8115792d858c1162ba02edb05db677af45f31e54774857cc
[INFO] checking messaging_thread_pool-3.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate messaging_thread_pool 3.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate messaging_thread_pool 3.1.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate messaging_thread_pool 3.1.0
[INFO] finished tweaking crates.io crate messaging_thread_pool 3.1.0
[INFO] tweaked toml for crates.io crate messaging_thread_pool 3.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66dbc3f5c4c190283c2009f49afe4b194462f85465fc8a9ac7eddf845e81bf70
[INFO] running `Command { std: "docker" "start" "-a" "66dbc3f5c4c190283c2009f49afe4b194462f85465fc8a9ac7eddf845e81bf70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66dbc3f5c4c190283c2009f49afe4b194462f85465fc8a9ac7eddf845e81bf70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66dbc3f5c4c190283c2009f49afe4b194462f85465fc8a9ac7eddf845e81bf70", kill_on_drop: false }`
[INFO] [stdout] 66dbc3f5c4c190283c2009f49afe4b194462f85465fc8a9ac7eddf845e81bf70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44a08d59107bb4af181722b60d08bee36cb233e6cc485d7f653a7f89df53a3da
[INFO] running `Command { std: "docker" "start" "-a" "44a08d59107bb4af181722b60d08bee36cb233e6cc485d7f653a7f89df53a3da", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking tracing-appender v0.2.3
[INFO] [stderr]     Checking messaging_thread_pool v3.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] warning: the item `GuardDrop` is imported redundantly
[INFO] [stdout]  --> src/samples/randoms/pool_item.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     guard_drop::GuardDrop,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 |     samples::{MeanResponse, RandomsAddRequest, SumResponse},
[INFO] [stdout] 5 |     *,
[INFO] [stdout]   |     - the item `GuardDrop` is already imported here
[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: the item `GuardDrop` is imported redundantly
[INFO] [stdout]  --> src/samples/randoms/pool_item.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     guard_drop::GuardDrop,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 |     samples::{MeanResponse, RandomsAddRequest, SumResponse},
[INFO] [stdout] 5 |     *,
[INFO] [stdout]   |     - the item `GuardDrop` is already imported here
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.56s
[INFO] running `Command { std: "docker" "inspect" "44a08d59107bb4af181722b60d08bee36cb233e6cc485d7f653a7f89df53a3da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44a08d59107bb4af181722b60d08bee36cb233e6cc485d7f653a7f89df53a3da", kill_on_drop: false }`
[INFO] [stdout] 44a08d59107bb4af181722b60d08bee36cb233e6cc485d7f653a7f89df53a3da