[INFO] fetching crate yt 0.1.1...
[INFO] building yt-0.1.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate yt 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate yt 0.1.1
[INFO] finished tweaking crates.io crate yt 0.1.1
[INFO] tweaked toml for crates.io crate yt 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate yt 0.1.1 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate yt 0.1.1 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 445cdc85923ee21be7417f0d593e406c1bbfa47a697ef2ee6126751dfa5aaf89
[INFO] running `Command { std: "docker" "start" "-a" "445cdc85923ee21be7417f0d593e406c1bbfa47a697ef2ee6126751dfa5aaf89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "445cdc85923ee21be7417f0d593e406c1bbfa47a697ef2ee6126751dfa5aaf89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "445cdc85923ee21be7417f0d593e406c1bbfa47a697ef2ee6126751dfa5aaf89", kill_on_drop: false }`
[INFO] [stdout] 445cdc85923ee21be7417f0d593e406c1bbfa47a697ef2ee6126751dfa5aaf89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfd1c9f160c90a31da6f07f487436faaec5062e518fccdebaf92314d3251af43
[INFO] running `Command { std: "docker" "start" "-a" "dfd1c9f160c90a31da6f07f487436faaec5062e518fccdebaf92314d3251af43", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
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[INFO] [stderr]    Compiling signal-hook v0.3.17
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[INFO] [stderr]    Compiling adler v1.0.2
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[INFO] [stderr]    Compiling once_cell v1.19.0
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[INFO] [stderr]    Compiling tempfile v3.10.1
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.199
[INFO] [stderr]    Compiling jpeg-decoder v0.3.1
[INFO] [stderr]    Compiling tiff v0.9.1
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[INFO] [stderr]    Compiling tinyget v1.0.1
[INFO] [stderr]    Compiling viuer v0.7.1
[INFO] [stderr]    Compiling yt v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]   --> src/main.rs:93:29
[INFO] [stdout]    |
[INFO] [stdout] 93 | ...                   Command::new("mpv").arg(arg).exec();
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 93 |                             let _ = Command::new("mpv").arg(arg).exec();
[INFO] [stdout]    |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.97s
[INFO] running `Command { std: "docker" "inspect" "dfd1c9f160c90a31da6f07f487436faaec5062e518fccdebaf92314d3251af43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfd1c9f160c90a31da6f07f487436faaec5062e518fccdebaf92314d3251af43", kill_on_drop: false }`
[INFO] [stdout] dfd1c9f160c90a31da6f07f487436faaec5062e518fccdebaf92314d3251af43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e34972a5bbb6346a11052005839f99cd18d93af1d7acba63fb705009ad2b6be8
[INFO] running `Command { std: "docker" "start" "-a" "e34972a5bbb6346a11052005839f99cd18d93af1d7acba63fb705009ad2b6be8", kill_on_drop: false }`
[INFO] [stderr]    Compiling yt v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]   --> src/main.rs:93:29
[INFO] [stdout]    |
[INFO] [stdout] 93 | ...                   Command::new("mpv").arg(arg).exec();
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 93 |                             let _ = Command::new("mpv").arg(arg).exec();
[INFO] [stdout]    |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "e34972a5bbb6346a11052005839f99cd18d93af1d7acba63fb705009ad2b6be8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e34972a5bbb6346a11052005839f99cd18d93af1d7acba63fb705009ad2b6be8", kill_on_drop: false }`
[INFO] [stdout] e34972a5bbb6346a11052005839f99cd18d93af1d7acba63fb705009ad2b6be8