[INFO] cloning repository https://github.com/urbit/io_drivers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/urbit/io_drivers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furbit%2Fio_drivers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furbit%2Fio_drivers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0ac358c8eeaa9872102df370585f87117d6ddf0
[INFO] checking urbit/io_drivers against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furbit%2Fio_drivers" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/urbit/io_drivers on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/urbit/io_drivers
[INFO] finished tweaking git repo https://github.com/urbit/io_drivers
[INFO] tweaked toml for git repo https://github.com/urbit/io_drivers written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/urbit/io_drivers 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/urbit/noun.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded time-core v0.1.0
[INFO] [stderr]   Downloaded num_threads v0.1.6
[INFO] [stderr]   Downloaded time-macros v0.2.5
[INFO] [stderr]   Downloaded simplelog v0.12.0
[INFO] [stderr]   Downloaded schannel v0.1.20
[INFO] [stderr]   Downloaded security-framework-sys v2.6.1
[INFO] [stderr]   Downloaded security-framework v2.7.0
[INFO] [stderr]   Downloaded time v0.3.16
[INFO] [stderr]   Downloaded serde v1.0.147
[INFO] [stderr]   Downloaded rustls-native-certs v0.6.2
[INFO] [stderr]   Downloaded unicode-ident v1.0.4
[INFO] [stderr]   Downloaded tokio v1.21.1
[INFO] [stderr]   Downloaded web-sys v0.3.60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fafd511fc19259fc252badb77d53c9a9c7d701ec4ba470b1326169591daf32d2
[INFO] running `Command { std: "docker" "start" "-a" "fafd511fc19259fc252badb77d53c9a9c7d701ec4ba470b1326169591daf32d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fafd511fc19259fc252badb77d53c9a9c7d701ec4ba470b1326169591daf32d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fafd511fc19259fc252badb77d53c9a9c7d701ec4ba470b1326169591daf32d2", kill_on_drop: false }`
[INFO] [stdout] fafd511fc19259fc252badb77d53c9a9c7d701ec4ba470b1326169591daf32d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8779d65e3a02a26f762449e0faf1a56cc4ed952a0e270474ffa854828fd7ddee
[INFO] running `Command { std: "docker" "start" "-a" "8779d65e3a02a26f762449e0faf1a56cc4ed952a0e270474ffa854828fd7ddee", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling tokio v1.21.1
[INFO] [stderr]    Compiling rustls v0.20.6
[INFO] [stderr]     Checking tracing-core v0.1.29
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking noun v0.1.0 (https://github.com/urbit/noun.git?branch=master#64c271f5)
[INFO] [stderr]     Checking rustls-native-certs v0.6.2
[INFO] [stderr]    Compiling time-macros v0.2.5
[INFO] [stderr]     Checking tracing v0.1.36
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking time v0.3.16
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking simplelog v0.12.0
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking hyper v0.14.20
[INFO] [stderr]     Checking hyper-rustls v0.23.0
[INFO] [stderr]     Checking io_drivers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.40s
[INFO] running `Command { std: "docker" "inspect" "8779d65e3a02a26f762449e0faf1a56cc4ed952a0e270474ffa854828fd7ddee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8779d65e3a02a26f762449e0faf1a56cc4ed952a0e270474ffa854828fd7ddee", kill_on_drop: false }`
[INFO] [stdout] 8779d65e3a02a26f762449e0faf1a56cc4ed952a0e270474ffa854828fd7ddee
[INFO] checking urbit/io_drivers against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furbit%2Fio_drivers" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/urbit/io_drivers on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/urbit/io_drivers
[INFO] finished tweaking git repo https://github.com/urbit/io_drivers
[INFO] tweaked toml for git repo https://github.com/urbit/io_drivers written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/urbit/io_drivers 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adbcd3694ccf1da8aae632c59703a0d017a0b091fe5473923bac73df7033cae3
[INFO] running `Command { std: "docker" "start" "-a" "adbcd3694ccf1da8aae632c59703a0d017a0b091fe5473923bac73df7033cae3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adbcd3694ccf1da8aae632c59703a0d017a0b091fe5473923bac73df7033cae3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adbcd3694ccf1da8aae632c59703a0d017a0b091fe5473923bac73df7033cae3", kill_on_drop: false }`
[INFO] [stdout] adbcd3694ccf1da8aae632c59703a0d017a0b091fe5473923bac73df7033cae3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f88d86e74eb5bf836094bcd218def5c1fcc473bcc66e99b221f90e664788cf9
[INFO] running `Command { std: "docker" "start" "-a" "3f88d86e74eb5bf836094bcd218def5c1fcc473bcc66e99b221f90e664788cf9", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling rustls v0.20.6
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling tokio v1.21.1
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking tracing-core v0.1.29
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking noun v0.1.0 (https://github.com/urbit/noun.git?branch=master#64c271f5)
[INFO] [stderr]     Checking rustls-native-certs v0.6.2
[INFO] [stderr]    Compiling time-macros v0.2.5
[INFO] [stderr]     Checking tracing v0.1.36
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking time v0.3.16
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking simplelog v0.12.0
[INFO] [stderr]     Checking hyper v0.14.20
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking hyper-rustls v0.23.0
[INFO] [stderr]     Checking io_drivers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.00s
[INFO] running `Command { std: "docker" "inspect" "3f88d86e74eb5bf836094bcd218def5c1fcc473bcc66e99b221f90e664788cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f88d86e74eb5bf836094bcd218def5c1fcc473bcc66e99b221f90e664788cf9", kill_on_drop: false }`
[INFO] [stdout] 3f88d86e74eb5bf836094bcd218def5c1fcc473bcc66e99b221f90e664788cf9