[INFO] fetching crate flipdot 0.6.0...
[INFO] checking flipdot-0.6.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate flipdot 0.6.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate flipdot 0.6.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flipdot 0.6.0
[INFO] finished tweaking crates.io crate flipdot 0.6.0
[INFO] tweaked toml for crates.io crate flipdot 0.6.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate flipdot 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flipdot-testing v0.6.0
[INFO] [stderr]   Downloaded termion v1.5.1
[INFO] [stderr]   Downloaded serial-windows v0.4.0
[INFO] [stderr]   Downloaded ioctl-rs v0.1.6
[INFO] [stderr]   Downloaded redox_syscall v0.1.52
[INFO] [stderr]   Downloaded termios v0.2.2
[INFO] [stderr]   Downloaded serial-unix v0.4.0
[INFO] [stderr]   Downloaded libc v0.2.51
[INFO] [stderr]   Downloaded winapi v0.3.6
[INFO] [stderr]   Downloaded serial v0.4.0
[INFO] [stderr]   Downloaded derive_more v0.99.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2dd2895b3c7debd13b2113e17f11ccb0abc20314dd509d2391666a590d92c5e4
[INFO] running `Command { std: "docker" "start" "-a" "2dd2895b3c7debd13b2113e17f11ccb0abc20314dd509d2391666a590d92c5e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dd2895b3c7debd13b2113e17f11ccb0abc20314dd509d2391666a590d92c5e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dd2895b3c7debd13b2113e17f11ccb0abc20314dd509d2391666a590d92c5e4", kill_on_drop: false }`
[INFO] [stdout] 2dd2895b3c7debd13b2113e17f11ccb0abc20314dd509d2391666a590d92c5e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac2521e0d0072756d2d8d6ddf84cec67a5c7637e5d8b37c119936be2efc52d32
[INFO] running `Command { std: "docker" "start" "-a" "ac2521e0d0072756d2d8d6ddf84cec67a5c7637e5d8b37c119936be2efc52d32", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking serial v0.4.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.16
[INFO] [stderr]    Compiling derive_more v0.99.5
[INFO] [stderr]     Checking thiserror v1.0.16
[INFO] [stderr]     Checking flipdot-core v0.6.0
[INFO] [stderr]     Checking flipdot-serial v0.6.0
[INFO] [stderr]     Checking flipdot-testing v0.6.0
[INFO] [stderr]     Checking flipdot v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.12s
[INFO] running `Command { std: "docker" "inspect" "ac2521e0d0072756d2d8d6ddf84cec67a5c7637e5d8b37c119936be2efc52d32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac2521e0d0072756d2d8d6ddf84cec67a5c7637e5d8b37c119936be2efc52d32", kill_on_drop: false }`
[INFO] [stdout] ac2521e0d0072756d2d8d6ddf84cec67a5c7637e5d8b37c119936be2efc52d32