[INFO] fetching crate serde 1.0.123...
[INFO] checking serde-1.0.123 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate serde 1.0.123 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate serde 1.0.123 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde 1.0.123
[INFO] finished tweaking crates.io crate serde 1.0.123
[INFO] tweaked toml for crates.io crate serde 1.0.123 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50dacf3e0b1ea5fa3292e8aef2ae5cf9dfc9df6f4097f16a695cf6dfaf50a982
[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" "50dacf3e0b1ea5fa3292e8aef2ae5cf9dfc9df6f4097f16a695cf6dfaf50a982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50dacf3e0b1ea5fa3292e8aef2ae5cf9dfc9df6f4097f16a695cf6dfaf50a982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50dacf3e0b1ea5fa3292e8aef2ae5cf9dfc9df6f4097f16a695cf6dfaf50a982", kill_on_drop: false }`
[INFO] [stdout] 50dacf3e0b1ea5fa3292e8aef2ae5cf9dfc9df6f4097f16a695cf6dfaf50a982
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0deb9dff50ae6d1cfab1759855bcbaa8563c311532c8e857da22990eb26faa1e
[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" "0deb9dff50ae6d1cfab1759855bcbaa8563c311532c8e857da22990eb26faa1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde v1.0.123 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.78s
[INFO] running `Command { std: "docker" "inspect" "0deb9dff50ae6d1cfab1759855bcbaa8563c311532c8e857da22990eb26faa1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0deb9dff50ae6d1cfab1759855bcbaa8563c311532c8e857da22990eb26faa1e", kill_on_drop: false }`
[INFO] [stdout] 0deb9dff50ae6d1cfab1759855bcbaa8563c311532c8e857da22990eb26faa1e