[INFO] fetching crate serde_jacl 0.3.6...
[INFO] checking serde_jacl-0.3.6 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate serde_jacl 0.3.6 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate serde_jacl 0.3.6 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_jacl 0.3.6
[INFO] finished tweaking crates.io crate serde_jacl 0.3.6
[INFO] tweaked toml for crates.io crate serde_jacl 0.3.6 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef0cc4cbaef0089447638db559639c3d6fe108056231f3899813dde159e709e4
[INFO] running `Command { std: "docker" "start" "-a" "ef0cc4cbaef0089447638db559639c3d6fe108056231f3899813dde159e709e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef0cc4cbaef0089447638db559639c3d6fe108056231f3899813dde159e709e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef0cc4cbaef0089447638db559639c3d6fe108056231f3899813dde159e709e4", kill_on_drop: false }`
[INFO] [stdout] ef0cc4cbaef0089447638db559639c3d6fe108056231f3899813dde159e709e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17464a3ad57a7cc69f15f7b5dec8b6dd0284dcb3410cad4abb09f9c9b4974402
[INFO] running `Command { std: "docker" "start" "-a" "17464a3ad57a7cc69f15f7b5dec8b6dd0284dcb3410cad4abb09f9c9b4974402", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking escape8259 v0.5.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking serde_jacl v0.3.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/ser.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn custom<T>(f: T) -> Self
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/ser.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn custom<T>(f: T) -> Self
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` 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 6.85s
[INFO] running `Command { std: "docker" "inspect" "17464a3ad57a7cc69f15f7b5dec8b6dd0284dcb3410cad4abb09f9c9b4974402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17464a3ad57a7cc69f15f7b5dec8b6dd0284dcb3410cad4abb09f9c9b4974402", kill_on_drop: false }`
[INFO] [stdout] 17464a3ad57a7cc69f15f7b5dec8b6dd0284dcb3410cad4abb09f9c9b4974402