[INFO] fetching crate serde_stacker 0.1.4...
[INFO] checking serde_stacker-0.1.4 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate serde_stacker 0.1.4 into /workspace/builds/worker-40/source
[INFO] validating manifest of crates.io crate serde_stacker 0.1.4 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_stacker 0.1.4
[INFO] finished tweaking crates.io crate serde_stacker 0.1.4
[INFO] tweaked toml for crates.io crate serde_stacker 0.1.4 written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stacker v0.1.14
[INFO] [stderr]   Downloaded psm v0.1.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37e8f807bafa1561a19db2a8a6802d650ba9c9d02ae0289c4b9cc72c7c87a726
[INFO] running `Command { std: "docker" "start" "-a" "37e8f807bafa1561a19db2a8a6802d650ba9c9d02ae0289c4b9cc72c7c87a726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37e8f807bafa1561a19db2a8a6802d650ba9c9d02ae0289c4b9cc72c7c87a726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37e8f807bafa1561a19db2a8a6802d650ba9c9d02ae0289c4b9cc72c7c87a726", kill_on_drop: false }`
[INFO] [stdout] 37e8f807bafa1561a19db2a8a6802d650ba9c9d02ae0289c4b9cc72c7c87a726
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bbd69af64f01533a4095621196b1a22a5cbccedf363ec48ebcf39ea41d69337
[INFO] running `Command { std: "docker" "start" "-a" "3bbd69af64f01533a4095621196b1a22a5cbccedf363ec48ebcf39ea41d69337", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling psm v0.1.16
[INFO] [stderr]    Compiling stacker v0.1.14
[INFO] [stderr]     Checking serde_stacker v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.48s
[INFO] running `Command { std: "docker" "inspect" "3bbd69af64f01533a4095621196b1a22a5cbccedf363ec48ebcf39ea41d69337", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bbd69af64f01533a4095621196b1a22a5cbccedf363ec48ebcf39ea41d69337", kill_on_drop: false }`
[INFO] [stdout] 3bbd69af64f01533a4095621196b1a22a5cbccedf363ec48ebcf39ea41d69337