[INFO] fetching crate serde_at 0.9.0...
[INFO] checking serde_at-0.9.0 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate serde_at 0.9.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate serde_at 0.9.0 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_at 0.9.0
[INFO] finished tweaking crates.io crate serde_at 0.9.0
[INFO] tweaked toml for crates.io crate serde_at 0.9.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "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" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 365a1b8813620a9f75a93f27ebb23aeea88984a415a0f7b2a1401027e99c3f81
[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" "365a1b8813620a9f75a93f27ebb23aeea88984a415a0f7b2a1401027e99c3f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "365a1b8813620a9f75a93f27ebb23aeea88984a415a0f7b2a1401027e99c3f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "365a1b8813620a9f75a93f27ebb23aeea88984a415a0f7b2a1401027e99c3f81", kill_on_drop: false }`
[INFO] [stdout] 365a1b8813620a9f75a93f27ebb23aeea88984a415a0f7b2a1401027e99c3f81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3f931ac47569cfd4b13b2455d66d55d6ac409fabe78d8529b5ae7361ff53152c
[INFO] running `Command { std: "docker" "start" "-a" "3f931ac47569cfd4b13b2455d66d55d6ac409fabe78d8529b5ae7361ff53152c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking heapless v0.5.6
[INFO] [stderr]     Checking serde_at v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unnecessary trailing semicolon
[INFO] [stdout]    --> src/ser/mod.rs:610:10
[INFO] [stdout]     |
[INFO] [stdout] 610 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout] 4   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(redundant_semicolons)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary trailing semicolon
[INFO] [stdout]    --> src/ser/mod.rs:641:10
[INFO] [stdout]     |
[INFO] [stdout] 641 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde_at`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3f931ac47569cfd4b13b2455d66d55d6ac409fabe78d8529b5ae7361ff53152c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f931ac47569cfd4b13b2455d66d55d6ac409fabe78d8529b5ae7361ff53152c", kill_on_drop: false }`
[INFO] [stdout] 3f931ac47569cfd4b13b2455d66d55d6ac409fabe78d8529b5ae7361ff53152c