[INFO] fetching crate gluon_check 0.17.2...
[INFO] checking gluon_check-0.17.2 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate gluon_check 0.17.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate gluon_check 0.17.2 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b78d5f5ab93f6cc89e16d0f35658a2cde532fbe0f6c052d1202f0e1e6827d5b3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b78d5f5ab93f6cc89e16d0f35658a2cde532fbe0f6c052d1202f0e1e6827d5b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b78d5f5ab93f6cc89e16d0f35658a2cde532fbe0f6c052d1202f0e1e6827d5b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b78d5f5ab93f6cc89e16d0f35658a2cde532fbe0f6c052d1202f0e1e6827d5b3", kill_on_drop: false }`
[INFO] [stdout] b78d5f5ab93f6cc89e16d0f35658a2cde532fbe0f6c052d1202f0e1e6827d5b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2754b4386bb0c0acbdd7062559449141641adf9443b98562a6a1707c7c2132f9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2754b4386bb0c0acbdd7062559449141641adf9443b98562a6a1707c7c2132f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]     Checking console v0.11.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling lalrpop v0.19.4
[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] [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_yaml v0.8.16
[INFO] [stderr]     Checking serde_json v1.0.62
[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 2m 03s
[INFO] running `Command { std: "docker" "inspect" "2754b4386bb0c0acbdd7062559449141641adf9443b98562a6a1707c7c2132f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2754b4386bb0c0acbdd7062559449141641adf9443b98562a6a1707c7c2132f9", kill_on_drop: false }`
[INFO] [stdout] 2754b4386bb0c0acbdd7062559449141641adf9443b98562a6a1707c7c2132f9