[INFO] cloning repository https://github.com/sunsided/multibuffer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sunsided/multibuffer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunsided%2Fmultibuffer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunsided%2Fmultibuffer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4abd13056d0004fe773aea0491be96c2d4f5677c
[INFO] checking sunsided/multibuffer against master#db0e836148accac8a22532e3596ac612b63c2d8e for pr-139272
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunsided%2Fmultibuffer" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sunsided/multibuffer on toolchain db0e836148accac8a22532e3596ac612b63c2d8e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sunsided/multibuffer
[INFO] finished tweaking git repo https://github.com/sunsided/multibuffer
[INFO] tweaked toml for git repo https://github.com/sunsided/multibuffer written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sunsided/multibuffer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 445b50d01849ff74ca2f73ffd762cfcfa4f2cdf2e06697c0639fccd768c497e0
[INFO] running `Command { std: "docker" "start" "-a" "445b50d01849ff74ca2f73ffd762cfcfa4f2cdf2e06697c0639fccd768c497e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "445b50d01849ff74ca2f73ffd762cfcfa4f2cdf2e06697c0639fccd768c497e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "445b50d01849ff74ca2f73ffd762cfcfa4f2cdf2e06697c0639fccd768c497e0", kill_on_drop: false }`
[INFO] [stdout] 445b50d01849ff74ca2f73ffd762cfcfa4f2cdf2e06697c0639fccd768c497e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 636d042f5847a0fcad4ad2f76f989ddeefe9168473339fd2f4ff4c0a3ea147b7
[INFO] running `Command { std: "docker" "start" "-a" "636d042f5847a0fcad4ad2f76f989ddeefe9168473339fd2f4ff4c0a3ea147b7", kill_on_drop: false }`
[INFO] [stderr]     Checking multibuffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "636d042f5847a0fcad4ad2f76f989ddeefe9168473339fd2f4ff4c0a3ea147b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "636d042f5847a0fcad4ad2f76f989ddeefe9168473339fd2f4ff4c0a3ea147b7", kill_on_drop: false }`
[INFO] [stdout] 636d042f5847a0fcad4ad2f76f989ddeefe9168473339fd2f4ff4c0a3ea147b7