[INFO] fetching crate gluon_check 0.17.2...
[INFO] checking gluon_check-0.17.2 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate gluon_check 0.17.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate gluon_check 0.17.2 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gluon_check 0.17.2
[INFO] finished tweaking crates.io crate gluon_check 0.17.2
[INFO] tweaked toml for crates.io crate gluon_check 0.17.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "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 insta v0.16.1
[INFO] [stderr]   Downloaded console v0.11.3
[INFO] [stderr]   Downloaded termios v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b87e4555f14671ac33a36b13e60c5438e6722fa939e1e1b53f8485a6936bb77
[INFO] running `Command { std: "docker" "start" "-a" "0b87e4555f14671ac33a36b13e60c5438e6722fa939e1e1b53f8485a6936bb77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b87e4555f14671ac33a36b13e60c5438e6722fa939e1e1b53f8485a6936bb77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b87e4555f14671ac33a36b13e60c5438e6722fa939e1e1b53f8485a6936bb77", kill_on_drop: false }`
[INFO] [stdout] 0b87e4555f14671ac33a36b13e60c5438e6722fa939e1e1b53f8485a6936bb77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f2d6810159599a634ab2ba18b2de4264aad492e9119fed8c551da02de0cfebb
[INFO] running `Command { std: "docker" "start" "-a" "0f2d6810159599a634ab2ba18b2de4264aad492e9119fed8c551da02de0cfebb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]     Checking archery v0.3.0
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking ena v0.14.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking rpds v0.7.0
[INFO] [stderr]     Checking console v0.11.3
[INFO] [stderr]     Checking ordered-float v2.5.1
[INFO] [stderr]    Compiling lalrpop v0.19.6
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling gluon_codegen v0.17.2
[INFO] [stderr]     Checking gluon_base v0.17.2
[INFO] [stderr]     Checking gluon_format v0.17.2
[INFO] [stderr]     Checking gluon_check v0.17.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.126
[INFO] [stdout] warning: field is never read: `span`
[INFO] [stdout]   --> src/typecheck/generalize.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     span: Span<BytePos>,
[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 serde_json v1.0.64
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking insta v0.16.1
[INFO] [stderr]    Compiling gluon_parser v0.17.2
[INFO] [stdout] warning: field is never read: `span`
[INFO] [stdout]   --> src/typecheck/generalize.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     span: Span<BytePos>,
[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 [unoptimized + debuginfo] target(s) in 1m 04s
[INFO] running `Command { std: "docker" "inspect" "0f2d6810159599a634ab2ba18b2de4264aad492e9119fed8c551da02de0cfebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f2d6810159599a634ab2ba18b2de4264aad492e9119fed8c551da02de0cfebb", kill_on_drop: false }`
[INFO] [stdout] 0f2d6810159599a634ab2ba18b2de4264aad492e9119fed8c551da02de0cfebb