[INFO] cloning repository https://github.com/mvertescher/serial-terminal-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mvertescher/serial-terminal-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmvertescher%2Fserial-terminal-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmvertescher%2Fserial-terminal-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 29dd2424e33742b699f454926fefb386405ba69f [INFO] checking mvertescher/serial-terminal-rs against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmvertescher%2Fserial-terminal-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/mvertescher/serial-terminal-rs [INFO] finished tweaking git repo https://github.com/mvertescher/serial-terminal-rs [INFO] tweaked toml for git repo https://github.com/mvertescher/serial-terminal-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/mvertescher/serial-terminal-rs on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/mvertescher/serial-terminal-rs 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 154d0f8f421b702f74c39d70de52aefa3cfd291596926676c29a81b9f8a7094e [INFO] running `Command { std: "docker" "start" "-a" "154d0f8f421b702f74c39d70de52aefa3cfd291596926676c29a81b9f8a7094e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "154d0f8f421b702f74c39d70de52aefa3cfd291596926676c29a81b9f8a7094e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "154d0f8f421b702f74c39d70de52aefa3cfd291596926676c29a81b9f8a7094e", kill_on_drop: false }` [INFO] [stdout] 154d0f8f421b702f74c39d70de52aefa3cfd291596926676c29a81b9f8a7094e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 830ba6b10f9b44f3c016e525447bd44111a33b7015849351b596dae1f9dcf442 [INFO] running `Command { std: "docker" "start" "-a" "830ba6b10f9b44f3c016e525447bd44111a33b7015849351b596dae1f9dcf442", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.21 [INFO] [stderr] Compiling syn v1.0.41 [INFO] [stderr] Compiling libc v0.2.77 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling pkg-config v0.3.18 [INFO] [stderr] Checking futures-core v0.3.5 [INFO] [stderr] Compiling pin-project-internal v0.4.23 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Compiling proc-macro-nested v0.1.6 [INFO] [stderr] Checking futures-sink v0.3.5 [INFO] [stderr] Compiling nix v0.14.1 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling nix v0.17.0 [INFO] [stderr] Checking once_cell v1.4.1 [INFO] [stderr] Compiling proc-macro-hack v0.5.18 [INFO] [stderr] Checking pin-project-lite v0.1.7 [INFO] [stderr] Checking futures-io v0.3.5 [INFO] [stderr] Checking futures-task v0.3.5 [INFO] [stderr] Checking futures-channel v0.3.5 [INFO] [stderr] Compiling libudev-sys v0.1.4 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking net2 v0.2.35 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking libudev v0.2.0 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking serialport v3.3.0 [INFO] [stderr] Checking mio-serial v3.3.1 [INFO] [stderr] Compiling tokio-macros v0.2.5 [INFO] [stderr] Compiling futures-macro v0.3.5 [INFO] [stderr] Compiling structopt-derive v0.4.10 [INFO] [stderr] Compiling strum_macros v0.18.0 [INFO] [stderr] Checking tokio v0.2.22 [INFO] [stderr] Checking structopt v0.3.17 [INFO] [stderr] Checking strum v0.18.0 [INFO] [stderr] Checking pin-project v0.4.23 [INFO] [stderr] Checking futures-util v0.3.5 [INFO] [stderr] Checking tokio-serial v4.3.3 [INFO] [stderr] Checking tokio-util v0.3.1 [INFO] [stderr] Checking futures-executor v0.3.5 [INFO] [stderr] Checking futures v0.3.5 [INFO] [stderr] Checking serial-terminal v0.0.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 42 | / /// Path to the serial device [INFO] [stdout] 43 | | #[structopt(short, long)] [INFO] [stdout] 44 | | tty: Option, [INFO] [stdout] | |________________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `serial-terminal` (bin "serial-terminal" test) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 42 | / /// Path to the serial device [INFO] [stdout] 43 | | #[structopt(short, long)] [INFO] [stdout] 44 | | tty: Option, [INFO] [stdout] | |________________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `serial-terminal` (bin "serial-terminal") due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "830ba6b10f9b44f3c016e525447bd44111a33b7015849351b596dae1f9dcf442", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "830ba6b10f9b44f3c016e525447bd44111a33b7015849351b596dae1f9dcf442", kill_on_drop: false }` [INFO] [stdout] 830ba6b10f9b44f3c016e525447bd44111a33b7015849351b596dae1f9dcf442