[INFO] fetching crate smolscale 0.4.2...
[INFO] checking smolscale-0.4.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate smolscale 0.4.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate smolscale 0.4.2 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 smolscale 0.4.2
[INFO] finished tweaking crates.io crate smolscale 0.4.2
[INFO] tweaked toml for crates.io crate smolscale 0.4.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate smolscale 0.4.2 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--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]  Downloading crates ...
[INFO] [stderr]   Downloaded async-oneshot v0.4.2
[INFO] [stderr]   Downloaded parking v2.1.1
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[INFO] [stderr]   Downloaded st3 v0.4.1
[INFO] [stderr]   Downloaded rustix v0.37.25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 }`
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[INFO] running `Command { std: "docker" "start" "-a" "f80db8d947a631c10c4f4e4ef30b349cf2dfdcf75a028e103258597674333626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f80db8d947a631c10c4f4e4ef30b349cf2dfdcf75a028e103258597674333626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f80db8d947a631c10c4f4e4ef30b349cf2dfdcf75a028e103258597674333626", kill_on_drop: false }`
[INFO] [stdout] f80db8d947a631c10c4f4e4ef30b349cf2dfdcf75a028e103258597674333626
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] b25fef67821ba19ac53c327dace66a382f0b5877273b4d742a2f8fabd0b88e47
[INFO] running `Command { std: "docker" "start" "-a" "b25fef67821ba19ac53c327dace66a382f0b5877273b4d742a2f8fabd0b88e47", kill_on_drop: false }`
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[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
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[INFO] [stderr]     Checking parking v2.1.1
[INFO] [stderr]     Checking waker-fn v1.1.1
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[INFO] [stderr]     Checking fastrand v2.0.1
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[INFO] [stderr]    Compiling async-io v1.13.0
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[INFO] [stderr]    Compiling num-traits v0.2.17
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[INFO] [stderr]     Checking piper v0.2.1
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[INFO] [stderr]    Compiling cc v1.0.83
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[INFO] [stderr]     Checking humantime v2.1.0
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[INFO] [stderr]     Checking serde_json v1.0.107
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[INFO] [stderr]     Checking csv v1.3.0
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[INFO] [stderr]     Checking async-global-executor v2.3.1
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[INFO] [stderr]     Checking env_logger v0.9.3
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling serde_derive v1.0.189
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stderr]     Checking smolscale v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]   --> src/queues.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     cell::RefCell,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_THREADS` is never used
[INFO] [stdout]   --> src/lib.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 | const MAX_THREADS: usize = 1500;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `POLL_COUNT` is never used
[INFO] [stdout]   --> src/lib.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | static POLL_COUNT: Lazy<FastCounter> = Lazy::new(Default::default);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `FUTURES_BEING_POLLED` is never used
[INFO] [stdout]    --> src/lib.rs:185:8
[INFO] [stdout]     |
[INFO] [stdout] 185 | static FUTURES_BEING_POLLED: Lazy<FastCounter> = Lazy::new(Default::default);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]   --> src/queues.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     cell::RefCell,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_THREADS` is never used
[INFO] [stdout]   --> src/lib.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 | const MAX_THREADS: usize = 1500;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `POLL_COUNT` is never used
[INFO] [stdout]   --> src/lib.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | static POLL_COUNT: Lazy<FastCounter> = Lazy::new(Default::default);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `FUTURES_BEING_POLLED` is never used
[INFO] [stdout]    --> src/lib.rs:185:8
[INFO] [stdout]     |
[INFO] [stdout] 185 | static FUTURES_BEING_POLLED: Lazy<FastCounter> = Lazy::new(Default::default);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.51s
[INFO] running `Command { std: "docker" "inspect" "b25fef67821ba19ac53c327dace66a382f0b5877273b4d742a2f8fabd0b88e47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b25fef67821ba19ac53c327dace66a382f0b5877273b4d742a2f8fabd0b88e47", kill_on_drop: false }`
[INFO] [stdout] b25fef67821ba19ac53c327dace66a382f0b5877273b4d742a2f8fabd0b88e47
[INFO] checking smolscale-0.4.2 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate smolscale 0.4.2 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate smolscale 0.4.2 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 smolscale 0.4.2
[INFO] finished tweaking crates.io crate smolscale 0.4.2
[INFO] tweaked toml for crates.io crate smolscale 0.4.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate smolscale 0.4.2 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f86dd25ca28d450ed422a6bedf123d585ff59482a61177fde7015e257ac75253
[INFO] running `Command { std: "docker" "start" "-a" "f86dd25ca28d450ed422a6bedf123d585ff59482a61177fde7015e257ac75253", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f86dd25ca28d450ed422a6bedf123d585ff59482a61177fde7015e257ac75253", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f86dd25ca28d450ed422a6bedf123d585ff59482a61177fde7015e257ac75253", kill_on_drop: false }`
[INFO] [stdout] f86dd25ca28d450ed422a6bedf123d585ff59482a61177fde7015e257ac75253
[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" "-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] 953d27ca57325aa976f013a12224b9b623b9490eca47296c9d0587e44abd2b06
[INFO] running `Command { std: "docker" "start" "-a" "953d27ca57325aa976f013a12224b9b623b9490eca47296c9d0587e44abd2b06", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]     Checking parking v2.1.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling rustix v0.37.25
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking async-task v4.4.1
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking atomic-waker v1.1.2
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[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]   --> src/queues.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     cell::RefCell,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] warning: constant `MAX_THREADS` is never used
[INFO] [stdout]   --> src/lib.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 | const MAX_THREADS: usize = 1500;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `POLL_COUNT` is never used
[INFO] [stdout]   --> src/lib.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | static POLL_COUNT: Lazy<FastCounter> = Lazy::new(Default::default);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `FUTURES_BEING_POLLED` is never used
[INFO] [stdout]    --> src/lib.rs:185:8
[INFO] [stdout]     |
[INFO] [stdout] 185 | static FUTURES_BEING_POLLED: Lazy<FastCounter> = Lazy::new(Default::default);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]   --> src/queues.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     cell::RefCell,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_THREADS` is never used
[INFO] [stdout]   --> src/lib.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 | const MAX_THREADS: usize = 1500;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `POLL_COUNT` is never used
[INFO] [stdout]   --> src/lib.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | static POLL_COUNT: Lazy<FastCounter> = Lazy::new(Default::default);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `FUTURES_BEING_POLLED` is never used
[INFO] [stdout]    --> src/lib.rs:185:8
[INFO] [stdout]     |
[INFO] [stdout] 185 | static FUTURES_BEING_POLLED: Lazy<FastCounter> = Lazy::new(Default::default);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 32.44s
[INFO] running `Command { std: "docker" "inspect" "953d27ca57325aa976f013a12224b9b623b9490eca47296c9d0587e44abd2b06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "953d27ca57325aa976f013a12224b9b623b9490eca47296c9d0587e44abd2b06", kill_on_drop: false }`
[INFO] [stdout] 953d27ca57325aa976f013a12224b9b623b9490eca47296c9d0587e44abd2b06