[INFO] fetching crate tmux-remux 0.3.4...
[INFO] checking tmux-remux-0.3.4 against master#f167efad2f51088d86180ee89177b3d7c9e7c2f5 for pr-129543
[INFO] extracting crate tmux-remux 0.3.4 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate tmux-remux 0.3.4 on toolchain f167efad2f51088d86180ee89177b3d7c9e7c2f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tmux-remux 0.3.4
[INFO] finished tweaking crates.io crate tmux-remux 0.3.4
[INFO] tweaked toml for crates.io crate tmux-remux 0.3.4 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate tmux-remux 0.3.4 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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tmux_interface v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e0857335e2fe49e227c39d3c1a0d7ba0bfbf6c892f22ea1f0056cacf0ae379c
[INFO] running `Command { std: "docker" "start" "-a" "2e0857335e2fe49e227c39d3c1a0d7ba0bfbf6c892f22ea1f0056cacf0ae379c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e0857335e2fe49e227c39d3c1a0d7ba0bfbf6c892f22ea1f0056cacf0ae379c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0857335e2fe49e227c39d3c1a0d7ba0bfbf6c892f22ea1f0056cacf0ae379c", kill_on_drop: false }`
[INFO] [stdout] 2e0857335e2fe49e227c39d3c1a0d7ba0bfbf6c892f22ea1f0056cacf0ae379c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8edbd1edba6b258c8e63e78615a55c77742814a8f34d61ec4d751ebb4f8ad3f2
[INFO] running `Command { std: "docker" "start" "-a" "8edbd1edba6b258c8e63e78615a55c77742814a8f34d61ec4d751ebb4f8ad3f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking tmux_interface v0.3.2
[INFO] [stderr]     Checking pico-args v0.5.0
[INFO] [stderr]     Checking termion v2.0.3
[INFO] [stderr]     Checking tmux-remux v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `target` is never read
[INFO] [stdout]   --> src/flag.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Flags {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub target: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/state.rs:79:6
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub struct Repository {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 79 |     pub path: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `target` is never read
[INFO] [stdout]   --> src/flag.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Flags {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub target: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/state.rs:79:6
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub struct Repository {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 79 |     pub path: PathBuf,
[INFO] [stdout]    |         ^^^^
[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 4.33s
[INFO] running `Command { std: "docker" "inspect" "8edbd1edba6b258c8e63e78615a55c77742814a8f34d61ec4d751ebb4f8ad3f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8edbd1edba6b258c8e63e78615a55c77742814a8f34d61ec4d751ebb4f8ad3f2", kill_on_drop: false }`
[INFO] [stdout] 8edbd1edba6b258c8e63e78615a55c77742814a8f34d61ec4d751ebb4f8ad3f2