[INFO] fetching crate flowrlib 0.92.0...
[INFO] checking flowrlib-0.92.0 against master#53709aedba198874ee50769f19f1e9ab00798bb5 for pr-108221
[INFO] extracting crate flowrlib 0.92.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate flowrlib 0.92.0 on toolchain 53709aedba198874ee50769f19f1e9ab00798bb5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53709aedba198874ee50769f19f1e9ab00798bb5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flowrlib 0.92.0
[INFO] finished tweaking crates.io crate flowrlib 0.92.0
[INFO] tweaked toml for crates.io crate flowrlib 0.92.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+53709aedba198874ee50769f19f1e9ab00798bb5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53709aedba198874ee50769f19f1e9ab00798bb5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasmtime-jit-debug v3.0.1
[INFO] [stderr]   Downloaded wasmtime-types v3.0.1
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[INFO] [stderr]   Downloaded flowcore v0.92.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:542af8c9c691278ea8427c9f55ce1005b509eeebcbbcbc893145cd6832507671" "/opt/rustwide/cargo-home/bin/cargo" "+53709aedba198874ee50769f19f1e9ab00798bb5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25d04b51cf89c0f578a26f6c23e0d616d0af9350cec76ee5dc2aeaa236673e3a
[INFO] running `Command { std: "docker" "start" "-a" "25d04b51cf89c0f578a26f6c23e0d616d0af9350cec76ee5dc2aeaa236673e3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25d04b51cf89c0f578a26f6c23e0d616d0af9350cec76ee5dc2aeaa236673e3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25d04b51cf89c0f578a26f6c23e0d616d0af9350cec76ee5dc2aeaa236673e3a", kill_on_drop: false }`
[INFO] [stdout] 25d04b51cf89c0f578a26f6c23e0d616d0af9350cec76ee5dc2aeaa236673e3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:542af8c9c691278ea8427c9f55ce1005b509eeebcbbcbc893145cd6832507671" "/opt/rustwide/cargo-home/bin/cargo" "+53709aedba198874ee50769f19f1e9ab00798bb5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e301cf86738421ee86c39e635d7a68e47b99964e52b4e491c26fffb926a90728
[INFO] running `Command { std: "docker" "start" "-a" "e301cf86738421ee86c39e635d7a68e47b99964e52b4e491c26fffb926a90728", kill_on_drop: false }`
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[INFO] [stderr]     Checking cranelift-bforest v0.90.1
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[INFO] [stderr]    Compiling system-deps v6.0.3
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[INFO] [stderr]     Checking flowcore v0.92.0
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[INFO] [stderr]     Checking flowrlib v0.92.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Value`
[INFO] [stdout]    --> src/run_state.rs:913:28
[INFO] [stdout]     |
[INFO] [stdout] 913 |     use serde_json::{json, Value};
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `flowcore::errors::Result`
[INFO] [stdout]    --> src/run_state.rs:916:9
[INFO] [stdout]     |
[INFO] [stdout] 916 |     use flowcore::errors::Result;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.92s
[INFO] running `Command { std: "docker" "inspect" "e301cf86738421ee86c39e635d7a68e47b99964e52b4e491c26fffb926a90728", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e301cf86738421ee86c39e635d7a68e47b99964e52b4e491c26fffb926a90728", kill_on_drop: false }`
[INFO] [stdout] e301cf86738421ee86c39e635d7a68e47b99964e52b4e491c26fffb926a90728