[INFO] cloning repository https://github.com/quadruple-output/rustc_dead_code_bug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quadruple-output/rustc_dead_code_bug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquadruple-output%2Frustc_dead_code_bug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquadruple-output%2Frustc_dead_code_bug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91320aa2e04c4ced1d76c20e15f99e58d6274457
[INFO] testing quadruple-output/rustc_dead_code_bug against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquadruple-output%2Frustc_dead_code_bug" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quadruple-output/rustc_dead_code_bug 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 git repo https://github.com/quadruple-output/rustc_dead_code_bug
[INFO] finished tweaking git repo https://github.com/quadruple-output/rustc_dead_code_bug
[INFO] tweaked toml for git repo https://github.com/quadruple-output/rustc_dead_code_bug written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/quadruple-output/rustc_dead_code_bug already has a lockfile, it will not be regenerated
[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" "MAP_USER_ID=0" "-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" "--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] a75bea64d99192682f1a82dfbbca561c60cd3abde24c1cfc414234c3586a08f4
[INFO] running `Command { std: "docker" "start" "-a" "a75bea64d99192682f1a82dfbbca561c60cd3abde24c1cfc414234c3586a08f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a75bea64d99192682f1a82dfbbca561c60cd3abde24c1cfc414234c3586a08f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a75bea64d99192682f1a82dfbbca561c60cd3abde24c1cfc414234c3586a08f4", kill_on_drop: false }`
[INFO] [stdout] a75bea64d99192682f1a82dfbbca561c60cd3abde24c1cfc414234c3586a08f4
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--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] e6624bc6946905b32ab9bda5213cbb54a8de90df68e9de33555c3157223bca6f
[INFO] running `Command { std: "docker" "start" "-a" "e6624bc6946905b32ab9bda5213cbb54a8de90df68e9de33555c3157223bca6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc_dead_code_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "e6624bc6946905b32ab9bda5213cbb54a8de90df68e9de33555c3157223bca6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6624bc6946905b32ab9bda5213cbb54a8de90df68e9de33555c3157223bca6f", kill_on_drop: false }`
[INFO] [stdout] e6624bc6946905b32ab9bda5213cbb54a8de90df68e9de33555c3157223bca6f
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 960b724a9f04e0a236e220da77ae466dcc13e92ac4391247744459f60fd20cc5
[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" "960b724a9f04e0a236e220da77ae466dcc13e92ac4391247744459f60fd20cc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc_dead_code_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "960b724a9f04e0a236e220da77ae466dcc13e92ac4391247744459f60fd20cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "960b724a9f04e0a236e220da77ae466dcc13e92ac4391247744459f60fd20cc5", kill_on_drop: false }`
[INFO] [stdout] 960b724a9f04e0a236e220da77ae466dcc13e92ac4391247744459f60fd20cc5
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a9f33c3db7ec47ba06212a270cc2ad3d728a47ea600fd7d8930978c3451e9bac
[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" "a9f33c3db7ec47ba06212a270cc2ad3d728a47ea600fd7d8930978c3451e9bac", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rustc_dead_code_bug-f2bdaf26811fc63d
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a9f33c3db7ec47ba06212a270cc2ad3d728a47ea600fd7d8930978c3451e9bac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9f33c3db7ec47ba06212a270cc2ad3d728a47ea600fd7d8930978c3451e9bac", kill_on_drop: false }`
[INFO] [stdout] a9f33c3db7ec47ba06212a270cc2ad3d728a47ea600fd7d8930978c3451e9bac