[INFO] cloning repository https://github.com/thomas9911/morse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thomas9911/morse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomas9911%2Fmorse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomas9911%2Fmorse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ddf1ba3bc154f24728b183ed52c9df4bf0d0ca94
[INFO] checking thomas9911/morse against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomas9911%2Fmorse" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thomas9911/morse 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 git repo https://github.com/thomas9911/morse
[INFO] finished tweaking git repo https://github.com/thomas9911/morse
[INFO] tweaked toml for git repo https://github.com/thomas9911/morse written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/thomas9911/morse 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]     Updating git repository `https://github.com/thomas9911/morse_code`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded coreaudio-rs v0.9.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.9
[INFO] [stderr]   Downloaded thiserror v1.0.13
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.4
[INFO] [stderr]   Downloaded thiserror-impl v1.0.13
[INFO] [stderr]   Downloaded cpal v0.11.0
[INFO] [stderr]   Downloaded alsa-sys v0.1.2
[INFO] [stderr]   Downloaded cc v1.0.50
[INFO] [stderr]   Downloaded rodio v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] acd01ff2aa339363e598b93b7d192e1d8425686b0347aee4e01b08e97d3e46dc
[INFO] running `Command { std: "docker" "start" "-a" "acd01ff2aa339363e598b93b7d192e1d8425686b0347aee4e01b08e97d3e46dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acd01ff2aa339363e598b93b7d192e1d8425686b0347aee4e01b08e97d3e46dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acd01ff2aa339363e598b93b7d192e1d8425686b0347aee4e01b08e97d3e46dc", kill_on_drop: false }`
[INFO] [stdout] acd01ff2aa339363e598b93b7d192e1d8425686b0347aee4e01b08e97d3e46dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 99b3fcfe3136a9d119d5c8f31f86209b997bd2d9059f2304960e1beec0f840d5
[INFO] running `Command { std: "docker" "start" "-a" "99b3fcfe3136a9d119d5c8f31f86209b997bd2d9059f2304960e1beec0f840d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]     Checking morse_code v0.1.0 (https://github.com/thomas9911/morse_code#88ccc528)
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.13
[INFO] [stderr]     Checking thiserror v1.0.13
[INFO] [stderr]     Checking rodio v0.11.0
[INFO] [stderr]     Checking morse v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.85s
[INFO] running `Command { std: "docker" "inspect" "99b3fcfe3136a9d119d5c8f31f86209b997bd2d9059f2304960e1beec0f840d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99b3fcfe3136a9d119d5c8f31f86209b997bd2d9059f2304960e1beec0f840d5", kill_on_drop: false }`
[INFO] [stdout] 99b3fcfe3136a9d119d5c8f31f86209b997bd2d9059f2304960e1beec0f840d5