[INFO] fetching crate iotscape 0.4.0...
[INFO] checking iotscape-0.4.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate iotscape 0.4.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate iotscape 0.4.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iotscape 0.4.0
[INFO] finished tweaking crates.io crate iotscape 0.4.0
[INFO] tweaked toml for crates.io crate iotscape 0.4.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate iotscape 0.4.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded no-std-net v0.6.0
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f47a56b4f12ecb105d08d9831326dcf7bb100c7725a19f7a3c4ac425a29281cf
[INFO] running `Command { std: "docker" "start" "-a" "f47a56b4f12ecb105d08d9831326dcf7bb100c7725a19f7a3c4ac425a29281cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f47a56b4f12ecb105d08d9831326dcf7bb100c7725a19f7a3c4ac425a29281cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f47a56b4f12ecb105d08d9831326dcf7bb100c7725a19f7a3c4ac425a29281cf", kill_on_drop: false }`
[INFO] [stdout] f47a56b4f12ecb105d08d9831326dcf7bb100c7725a19f7a3c4ac425a29281cf
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70b760d87fc6a217d702dae0721ffb4f14a95e77389e787f749de26fbf7b26c7
[INFO] running `Command { std: "docker" "start" "-a" "70b760d87fc6a217d702dae0721ffb4f14a95e77389e787f749de26fbf7b26c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling tokio v1.23.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking bytes v1.3.0
[INFO] [stderr]     Checking no-std-net v0.6.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling serde_derive v1.0.189
[INFO] [stderr]    Compiling tokio-macros v1.8.2
[INFO] [stderr]     Checking iotscape v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.12s
[INFO] running `Command { std: "docker" "inspect" "70b760d87fc6a217d702dae0721ffb4f14a95e77389e787f749de26fbf7b26c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b760d87fc6a217d702dae0721ffb4f14a95e77389e787f749de26fbf7b26c7", kill_on_drop: false }`
[INFO] [stdout] 70b760d87fc6a217d702dae0721ffb4f14a95e77389e787f749de26fbf7b26c7