[INFO] fetching crate mango_compiler_reducing 0.1.0...
[INFO] checking mango_compiler_reducing-0.1.0 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate mango_compiler_reducing 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mango_compiler_reducing 0.1.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mango_compiler_reducing 0.1.0
[INFO] finished tweaking crates.io crate mango_compiler_reducing 0.1.0
[INFO] tweaked toml for crates.io crate mango_compiler_reducing 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", 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] 3bf810bafdb3f8157b25ed7000b5aea2cd56e4447bb129fedf873ee5e26a813d
[INFO] running `Command { std: "docker" "start" "-a" "3bf810bafdb3f8157b25ed7000b5aea2cd56e4447bb129fedf873ee5e26a813d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bf810bafdb3f8157b25ed7000b5aea2cd56e4447bb129fedf873ee5e26a813d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bf810bafdb3f8157b25ed7000b5aea2cd56e4447bb129fedf873ee5e26a813d", kill_on_drop: false }`
[INFO] [stdout] 3bf810bafdb3f8157b25ed7000b5aea2cd56e4447bb129fedf873ee5e26a813d
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ac66e279a1b50ba270d6f82d95213e2cc6bf164ceb6fcef7152dfd6c6e156aa
[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" "3ac66e279a1b50ba270d6f82d95213e2cc6bf164ceb6fcef7152dfd6c6e156aa", kill_on_drop: false }`
[INFO] [stderr]     Checking mango_compiler_reducing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "3ac66e279a1b50ba270d6f82d95213e2cc6bf164ceb6fcef7152dfd6c6e156aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ac66e279a1b50ba270d6f82d95213e2cc6bf164ceb6fcef7152dfd6c6e156aa", kill_on_drop: false }`
[INFO] [stdout] 3ac66e279a1b50ba270d6f82d95213e2cc6bf164ceb6fcef7152dfd6c6e156aa
