[INFO] cloning repository https://github.com/h1t/h2_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/h1t/h2_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh1t%2Fh2_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh1t%2Fh2_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6d2f27a2c432a78ed2072745b7d6eab4f5b9062
[INFO] checking h1t/h2_example against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh1t%2Fh2_example" "/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/h1t/h2_example 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/h1t/h2_example
[INFO] finished tweaking git repo https://github.com/h1t/h2_example
[INFO] tweaked toml for git repo https://github.com/h1t/h2_example written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/h1t/h2_example 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] 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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 342ae5fec70764124a8e8755cc1b63b0a25dabcfa31c0597c1b58b58c48b415b
[INFO] running `Command { std: "docker" "start" "-a" "342ae5fec70764124a8e8755cc1b63b0a25dabcfa31c0597c1b58b58c48b415b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "342ae5fec70764124a8e8755cc1b63b0a25dabcfa31c0597c1b58b58c48b415b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "342ae5fec70764124a8e8755cc1b63b0a25dabcfa31c0597c1b58b58c48b415b", kill_on_drop: false }`
[INFO] [stdout] 342ae5fec70764124a8e8755cc1b63b0a25dabcfa31c0597c1b58b58c48b415b
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 613d84b3e58989e525d43c7cb2bf3f2dc14c7eb935a4835bdac79cf15bf0b689
[INFO] running `Command { std: "docker" "start" "-a" "613d84b3e58989e525d43c7cb2bf3f2dc14c7eb935a4835bdac79cf15bf0b689", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking futures-sink v0.3.29
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking tokio v1.33.0
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking h2 v0.3.21
[INFO] [stderr]     Checking h2server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.20s
[INFO] running `Command { std: "docker" "inspect" "613d84b3e58989e525d43c7cb2bf3f2dc14c7eb935a4835bdac79cf15bf0b689", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "613d84b3e58989e525d43c7cb2bf3f2dc14c7eb935a4835bdac79cf15bf0b689", kill_on_drop: false }`
[INFO] [stdout] 613d84b3e58989e525d43c7cb2bf3f2dc14c7eb935a4835bdac79cf15bf0b689
[INFO] checking h1t/h2_example against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh1t%2Fh2_example" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/h1t/h2_example 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/h1t/h2_example
[INFO] finished tweaking git repo https://github.com/h1t/h2_example
[INFO] tweaked toml for git repo https://github.com/h1t/h2_example written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/h1t/h2_example 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 25d07974e768831a30ab5f41e4f406b091608652999b5b38784dee030c01b442
[INFO] running `Command { std: "docker" "start" "-a" "25d07974e768831a30ab5f41e4f406b091608652999b5b38784dee030c01b442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25d07974e768831a30ab5f41e4f406b091608652999b5b38784dee030c01b442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25d07974e768831a30ab5f41e4f406b091608652999b5b38784dee030c01b442", kill_on_drop: false }`
[INFO] [stdout] 25d07974e768831a30ab5f41e4f406b091608652999b5b38784dee030c01b442
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f60c145dd1cb7cd21b7c1067b280c51f89bbe541a8b85e8cf43dbe126fd35da0
[INFO] running `Command { std: "docker" "start" "-a" "f60c145dd1cb7cd21b7c1067b280c51f89bbe541a8b85e8cf43dbe126fd35da0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking futures-sink v0.3.29
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking tokio v1.33.0
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking h2 v0.3.21
[INFO] [stderr]     Checking h2server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.41s
[INFO] running `Command { std: "docker" "inspect" "f60c145dd1cb7cd21b7c1067b280c51f89bbe541a8b85e8cf43dbe126fd35da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f60c145dd1cb7cd21b7c1067b280c51f89bbe541a8b85e8cf43dbe126fd35da0", kill_on_drop: false }`
[INFO] [stdout] f60c145dd1cb7cd21b7c1067b280c51f89bbe541a8b85e8cf43dbe126fd35da0