[INFO] cloning repository https://github.com/riddleling/serial-tool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/riddleling/serial-tool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Friddleling%2Fserial-tool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Friddleling%2Fserial-tool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4106a8e5e9802aa8e0a839fe286da7bae5e06078
[INFO] checking riddleling/serial-tool against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Friddleling%2Fserial-tool" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/riddleling/serial-tool 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/riddleling/serial-tool
[INFO] finished tweaking git repo https://github.com/riddleling/serial-tool
[INFO] tweaked toml for git repo https://github.com/riddleling/serial-tool written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/riddleling/serial-tool 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rusb v0.9.0
[INFO] [stderr]   Downloaded libusb1-sys 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] 2e441a32d7f33b8ca67b8aa79355ec55a392f469e6658842414fefbbba047a56
[INFO] running `Command { std: "docker" "start" "-a" "2e441a32d7f33b8ca67b8aa79355ec55a392f469e6658842414fefbbba047a56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e441a32d7f33b8ca67b8aa79355ec55a392f469e6658842414fefbbba047a56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e441a32d7f33b8ca67b8aa79355ec55a392f469e6658842414fefbbba047a56", kill_on_drop: false }`
[INFO] [stdout] 2e441a32d7f33b8ca67b8aa79355ec55a392f469e6658842414fefbbba047a56
[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] 1212ae834a51b5793c1ad6a0c0138e7635b8645ef363e6f950232dcf0061445b
[INFO] running `Command { std: "docker" "start" "-a" "1212ae834a51b5793c1ad6a0c0138e7635b8645ef363e6f950232dcf0061445b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling pkg-config v0.3.23
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling version-compare v0.0.11
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling cfg-expr v0.8.1
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling gio v0.14.8
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking parking_lot_core v0.9.8
[INFO] [stderr]     Checking lock_api v0.4.10
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling libusb1-sys v0.6.0
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]    Compiling field-offset v0.3.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling gtk v0.14.3
[INFO] [stderr]    Compiling rusb v0.9.0
[INFO] [stderr]     Checking tracing v0.1.35
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serialport v4.0.1
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking mio-serial v5.0.5
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling system-deps v3.2.0
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[INFO] [stderr]    Compiling glib-macros v0.14.1
[INFO] [stderr]    Compiling gtk3-macros v0.14.0
[INFO] [stderr]    Compiling glib-sys v0.14.0
[INFO] [stderr]    Compiling gobject-sys v0.14.0
[INFO] [stderr]    Compiling gio-sys v0.14.0
[INFO] [stderr]    Compiling pango-sys v0.14.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.14.9
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.14.0
[INFO] [stderr]    Compiling gdk-sys v0.14.0
[INFO] [stderr]    Compiling atk-sys v0.14.0
[INFO] [stderr]    Compiling gtk-sys v0.14.0
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking glib v0.14.8
[INFO] [stderr]     Checking tokio-util v0.7.8
[INFO] [stderr]     Checking tokio-serial v5.4.4
[INFO] [stderr]     Checking cairo-rs v0.14.9
[INFO] [stderr]     Checking pango v0.14.8
[INFO] [stderr]     Checking atk v0.14.0
[INFO] [stderr]     Checking gdk-pixbuf v0.14.0
[INFO] [stderr]     Checking gdk v0.14.3
[INFO] [stderr]     Checking serial-tool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `glib` is imported redundantly
[INFO] [stdout]  --> src/main_window/imp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use gtk::glib;
[INFO] [stdout]   |     ^^^^^^^^^ the item `glib` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `glib` is imported redundantly
[INFO] [stdout]  --> src/main_window/imp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use gtk::glib;
[INFO] [stdout]   |     ^^^^^^^^^ the item `glib` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `glib` is imported redundantly
[INFO] [stdout]  --> src/main_window/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use gtk::glib;
[INFO] [stdout]   |     ^^^^^^^^^ the item `glib` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `glib` is imported redundantly
[INFO] [stdout]  --> src/main_window/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use gtk::glib;
[INFO] [stdout]   |     ^^^^^^^^^ the item `glib` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.91s
[INFO] running `Command { std: "docker" "inspect" "1212ae834a51b5793c1ad6a0c0138e7635b8645ef363e6f950232dcf0061445b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1212ae834a51b5793c1ad6a0c0138e7635b8645ef363e6f950232dcf0061445b", kill_on_drop: false }`
[INFO] [stdout] 1212ae834a51b5793c1ad6a0c0138e7635b8645ef363e6f950232dcf0061445b