[INFO] fetching crate serde_shims 0.2.2...
[INFO] checking serde_shims-0.2.2 against try#bb9dbf1d07454a99066eabaabd5819851281494b for pr-80920
[INFO] extracting crate serde_shims 0.2.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate serde_shims 0.2.2 on toolchain bb9dbf1d07454a99066eabaabd5819851281494b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_shims 0.2.2
[INFO] finished tweaking crates.io crate serde_shims 0.2.2
[INFO] tweaked toml for crates.io crate serde_shims 0.2.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitflags_serde_shim v0.2.2
[INFO] [stderr]   Downloaded enum_primitive_serde_shim v0.2.2
[INFO] [stderr]   Downloaded mime_serde_shim v0.2.2
[INFO] [stderr]   Downloaded std_serde_shims v0.2.1
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 397f8887fb5ec051035094f0e3d3a523ac8fab662bf075ca6846995a51fe18f3
[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" "397f8887fb5ec051035094f0e3d3a523ac8fab662bf075ca6846995a51fe18f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "397f8887fb5ec051035094f0e3d3a523ac8fab662bf075ca6846995a51fe18f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "397f8887fb5ec051035094f0e3d3a523ac8fab662bf075ca6846995a51fe18f3", kill_on_drop: false }`
[INFO] [stdout] 397f8887fb5ec051035094f0e3d3a523ac8fab662bf075ca6846995a51fe18f3
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "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] 74deb512a5b854985683a26bf6b10657dc55d0d9cc782a6ed3639fdeec070e7e
[INFO] running `Command { std: "docker" "start" "-a" "74deb512a5b854985683a26bf6b10657dc55d0d9cc782a6ed3639fdeec070e7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.119
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking bitflags_serde_shim v0.2.2
[INFO] [stderr]     Checking enum_primitive_serde_shim v0.2.2
[INFO] [stderr]     Checking std_serde_shims v0.2.1
[INFO] [stderr]     Checking serde_shims v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.97s
[INFO] running `Command { std: "docker" "inspect" "74deb512a5b854985683a26bf6b10657dc55d0d9cc782a6ed3639fdeec070e7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74deb512a5b854985683a26bf6b10657dc55d0d9cc782a6ed3639fdeec070e7e", kill_on_drop: false }`
[INFO] [stdout] 74deb512a5b854985683a26bf6b10657dc55d0d9cc782a6ed3639fdeec070e7e