[INFO] fetching crate fakecargo 0.4.0...
[INFO] checking fakecargo-0.4.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate fakecargo 0.4.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate fakecargo 0.4.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fakecargo 0.4.0
[INFO] finished tweaking crates.io crate fakecargo 0.4.0
[INFO] tweaked toml for crates.io crate fakecargo 0.4.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate fakecargo 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09fdb9f32cc46afb7c019f52b7dffda3937546a043501933199075e8597e6699
[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" "09fdb9f32cc46afb7c019f52b7dffda3937546a043501933199075e8597e6699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09fdb9f32cc46afb7c019f52b7dffda3937546a043501933199075e8597e6699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09fdb9f32cc46afb7c019f52b7dffda3937546a043501933199075e8597e6699", kill_on_drop: false }`
[INFO] [stdout] 09fdb9f32cc46afb7c019f52b7dffda3937546a043501933199075e8597e6699
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] 2375cdd9d436762e4629a0f46a68a118f9fd842ad80f20d84b30b36734e39178
[INFO] running `Command { std: "docker" "start" "-a" "2375cdd9d436762e4629a0f46a68a118f9fd842ad80f20d84b30b36734e39178", kill_on_drop: false }`
[INFO] [stderr]     Checking fakecargo v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "2375cdd9d436762e4629a0f46a68a118f9fd842ad80f20d84b30b36734e39178", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2375cdd9d436762e4629a0f46a68a118f9fd842ad80f20d84b30b36734e39178", kill_on_drop: false }`
[INFO] [stdout] 2375cdd9d436762e4629a0f46a68a118f9fd842ad80f20d84b30b36734e39178