[INFO] cloning repository https://github.com/carllerche/tokio-repro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carllerche/tokio-repro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarllerche%2Ftokio-repro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarllerche%2Ftokio-repro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a5653abf6fb59dbb033d3979ac7bff0872ed15e
[INFO] checking carllerche/tokio-repro against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarllerche%2Ftokio-repro" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/carllerche/tokio-repro on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/carllerche/tokio-repro
[INFO] finished tweaking git repo https://github.com/carllerche/tokio-repro
[INFO] tweaked toml for git repo https://github.com/carllerche/tokio-repro written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/carllerche/tokio-repro 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_cpus v1.11.1
[INFO] [stderr]   Downloaded pin-project-lite v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81c2eddbd925ca138344059d4e12a07ad664c41785fb834afde452dc6072127c
[INFO] running `Command { std: "docker" "start" "-a" "81c2eddbd925ca138344059d4e12a07ad664c41785fb834afde452dc6072127c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81c2eddbd925ca138344059d4e12a07ad664c41785fb834afde452dc6072127c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81c2eddbd925ca138344059d4e12a07ad664c41785fb834afde452dc6072127c", kill_on_drop: false }`
[INFO] [stdout] 81c2eddbd925ca138344059d4e12a07ad664c41785fb834afde452dc6072127c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1c4620ecfa8a0cf55c32675f925b4e60995e7a4008d49528e558124018f5115
[INFO] running `Command { std: "docker" "start" "-a" "d1c4620ecfa8a0cf55c32675f925b4e60995e7a4008d49528e558124018f5115", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking pin-project-lite v0.1.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio v0.2.0-alpha.6 (https://github.com/tokio-rs/tokio?rev=3d52204ed2967c7ecdc4e450f45bc7ceada968db#3d52204e)
[INFO] [stderr]     Checking ded-lock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.73s
[INFO] running `Command { std: "docker" "inspect" "d1c4620ecfa8a0cf55c32675f925b4e60995e7a4008d49528e558124018f5115", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1c4620ecfa8a0cf55c32675f925b4e60995e7a4008d49528e558124018f5115", kill_on_drop: false }`
[INFO] [stdout] d1c4620ecfa8a0cf55c32675f925b4e60995e7a4008d49528e558124018f5115
[INFO] checking carllerche/tokio-repro against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarllerche%2Ftokio-repro" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/carllerche/tokio-repro on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/carllerche/tokio-repro
[INFO] finished tweaking git repo https://github.com/carllerche/tokio-repro
[INFO] tweaked toml for git repo https://github.com/carllerche/tokio-repro written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/carllerche/tokio-repro 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdefe6984d042dee24d6dcbb76625cf7ac505802315a6c04bb878fa208f6575a
[INFO] running `Command { std: "docker" "start" "-a" "cdefe6984d042dee24d6dcbb76625cf7ac505802315a6c04bb878fa208f6575a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdefe6984d042dee24d6dcbb76625cf7ac505802315a6c04bb878fa208f6575a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdefe6984d042dee24d6dcbb76625cf7ac505802315a6c04bb878fa208f6575a", kill_on_drop: false }`
[INFO] [stdout] cdefe6984d042dee24d6dcbb76625cf7ac505802315a6c04bb878fa208f6575a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2dbfc1989206cf5d0f3124afaa7ae73710fd335ec1fa4ba97a290585bcf0a554
[INFO] running `Command { std: "docker" "start" "-a" "2dbfc1989206cf5d0f3124afaa7ae73710fd335ec1fa4ba97a290585bcf0a554", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking pin-project-lite v0.1.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio v0.2.0-alpha.6 (https://github.com/tokio-rs/tokio?rev=3d52204ed2967c7ecdc4e450f45bc7ceada968db#3d52204e)
[INFO] [stderr]     Checking ded-lock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.91s
[INFO] running `Command { std: "docker" "inspect" "2dbfc1989206cf5d0f3124afaa7ae73710fd335ec1fa4ba97a290585bcf0a554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dbfc1989206cf5d0f3124afaa7ae73710fd335ec1fa4ba97a290585bcf0a554", kill_on_drop: false }`
[INFO] [stdout] 2dbfc1989206cf5d0f3124afaa7ae73710fd335ec1fa4ba97a290585bcf0a554