[INFO] cloning repository https://github.com/hawkw/tokio-deadlock-repro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hawkw/tokio-deadlock-repro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhawkw%2Ftokio-deadlock-repro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhawkw%2Ftokio-deadlock-repro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a7f91e84e3cb39629c1026d8de1a7b4b83fde18
[INFO] checking hawkw/tokio-deadlock-repro against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhawkw%2Ftokio-deadlock-repro" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hawkw/tokio-deadlock-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/hawkw/tokio-deadlock-repro
[INFO] finished tweaking git repo https://github.com/hawkw/tokio-deadlock-repro
[INFO] tweaked toml for git repo https://github.com/hawkw/tokio-deadlock-repro written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hawkw/tokio-deadlock-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded log v0.4.3
[INFO] [stderr]   Downloaded byteorder v1.2.4
[INFO] [stderr]   Downloaded termcolor v1.0.1
[INFO] [stderr]   Downloaded wincolor v1.0.0
[INFO] [stderr]   Downloaded humantime v1.1.1
[INFO] [stderr]   Downloaded env_logger v0.5.12
[INFO] [stderr]   Downloaded aho-corasick v0.6.6
[INFO] [stderr]   Downloaded regex-syntax v0.6.2
[INFO] [stderr]   Downloaded regex v1.0.2
[INFO] [stderr]   Downloaded smallvec v0.6.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7ad8e8a84d13cea969cbd70e46330cec94f9344efb92b087310b4580928a855b
[INFO] running `Command { std: "docker" "start" "-a" "7ad8e8a84d13cea969cbd70e46330cec94f9344efb92b087310b4580928a855b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ad8e8a84d13cea969cbd70e46330cec94f9344efb92b087310b4580928a855b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ad8e8a84d13cea969cbd70e46330cec94f9344efb92b087310b4580928a855b", kill_on_drop: false }`
[INFO] [stdout] 7ad8e8a84d13cea969cbd70e46330cec94f9344efb92b087310b4580928a855b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 69671f19c03a6270b264df32a4265dd64f0160850ef37ac9286895e0f5cd6339
[INFO] running `Command { std: "docker" "start" "-a" "69671f19c03a6270b264df32a4265dd64f0160850ef37ac9286895e0f5cd6339", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking futures v0.1.23
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking termcolor v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking smallvec v0.6.4
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking bytes v0.4.9
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking mio-uds v0.6.6
[INFO] [stderr]     Checking parking_lot v0.6.3
[INFO] [stderr]     Checking tokio-executor v0.1.3 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-io v0.1.7 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-threadpool v0.1.5 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-current-thread v0.1.1 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-timer v0.2.5 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-reactor v0.1.3 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-codec v0.1.0 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-udp v0.1.1 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-uds v0.2.1 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-tcp v0.1.1 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-fs v0.1.3 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio v0.1.7 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking env_logger v0.5.12
[INFO] [stderr]     Checking deadlock-repro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.83s
[INFO] running `Command { std: "docker" "inspect" "69671f19c03a6270b264df32a4265dd64f0160850ef37ac9286895e0f5cd6339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69671f19c03a6270b264df32a4265dd64f0160850ef37ac9286895e0f5cd6339", kill_on_drop: false }`
[INFO] [stdout] 69671f19c03a6270b264df32a4265dd64f0160850ef37ac9286895e0f5cd6339
[INFO] checking hawkw/tokio-deadlock-repro against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhawkw%2Ftokio-deadlock-repro" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hawkw/tokio-deadlock-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/hawkw/tokio-deadlock-repro
[INFO] finished tweaking git repo https://github.com/hawkw/tokio-deadlock-repro
[INFO] tweaked toml for git repo https://github.com/hawkw/tokio-deadlock-repro written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hawkw/tokio-deadlock-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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 6628c849bb6e2ccd818a2a73af980cbe27a6e644bcf011002bbc291dfb6a6083
[INFO] running `Command { std: "docker" "start" "-a" "6628c849bb6e2ccd818a2a73af980cbe27a6e644bcf011002bbc291dfb6a6083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6628c849bb6e2ccd818a2a73af980cbe27a6e644bcf011002bbc291dfb6a6083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6628c849bb6e2ccd818a2a73af980cbe27a6e644bcf011002bbc291dfb6a6083", kill_on_drop: false }`
[INFO] [stdout] 6628c849bb6e2ccd818a2a73af980cbe27a6e644bcf011002bbc291dfb6a6083
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c8fee66e6c07f9a2ed00d6b61db3894542fb7ddcdc21ba2eed96217cdcb6b5fd
[INFO] running `Command { std: "docker" "start" "-a" "c8fee66e6c07f9a2ed00d6b61db3894542fb7ddcdc21ba2eed96217cdcb6b5fd", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking futures v0.1.23
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking termcolor v1.0.1
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]     Checking smallvec v0.6.4
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking bytes v0.4.9
[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking mio-uds v0.6.6
[INFO] [stderr]     Checking tokio-executor v0.1.3 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-io v0.1.7 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking parking_lot v0.6.3
[INFO] [stderr]     Checking tokio-threadpool v0.1.5 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-current-thread v0.1.1 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-timer v0.2.5 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-codec v0.1.0 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-reactor v0.1.3 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-fs v0.1.3 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-udp v0.1.1 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-tcp v0.1.1 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio-uds v0.2.1 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking tokio v0.1.7 (https://github.com/tokio-rs/tokio.git#d822b721)
[INFO] [stderr]     Checking env_logger v0.5.12
[INFO] [stderr]     Checking deadlock-repro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.22s
[INFO] running `Command { std: "docker" "inspect" "c8fee66e6c07f9a2ed00d6b61db3894542fb7ddcdc21ba2eed96217cdcb6b5fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8fee66e6c07f9a2ed00d6b61db3894542fb7ddcdc21ba2eed96217cdcb6b5fd", kill_on_drop: false }`
[INFO] [stdout] c8fee66e6c07f9a2ed00d6b61db3894542fb7ddcdc21ba2eed96217cdcb6b5fd