[INFO] fetching crate variadic_arguments 0.1.2...
[INFO] building variadic_arguments-0.1.2 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate variadic_arguments 0.1.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate variadic_arguments 0.1.2
[INFO] finished tweaking crates.io crate variadic_arguments 0.1.2
[INFO] tweaked toml for crates.io crate variadic_arguments 0.1.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate variadic_arguments 0.1.2 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate variadic_arguments 0.1.2 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da8586856c1c45f87429db2e9429b8833f2b4423054bd0b7a4f3b903579de00b
[INFO] running `Command { std: "docker" "start" "-a" "da8586856c1c45f87429db2e9429b8833f2b4423054bd0b7a4f3b903579de00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da8586856c1c45f87429db2e9429b8833f2b4423054bd0b7a4f3b903579de00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da8586856c1c45f87429db2e9429b8833f2b4423054bd0b7a4f3b903579de00b", kill_on_drop: false }`
[INFO] [stdout] da8586856c1c45f87429db2e9429b8833f2b4423054bd0b7a4f3b903579de00b
[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" "-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51e3acf254971d57516adee99046eceb1dc26fb9456c26a9aae8d9ee3ac75cd0
[INFO] running `Command { std: "docker" "start" "-a" "51e3acf254971d57516adee99046eceb1dc26fb9456c26a9aae8d9ee3ac75cd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling variadic_arguments v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "51e3acf254971d57516adee99046eceb1dc26fb9456c26a9aae8d9ee3ac75cd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51e3acf254971d57516adee99046eceb1dc26fb9456c26a9aae8d9ee3ac75cd0", kill_on_drop: false }`
[INFO] [stdout] 51e3acf254971d57516adee99046eceb1dc26fb9456c26a9aae8d9ee3ac75cd0
[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" "-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f3a58157851276c204b6883d1314841772279ad78e9e50bf9a67d2213ebdb1a
[INFO] running `Command { std: "docker" "start" "-a" "6f3a58157851276c204b6883d1314841772279ad78e9e50bf9a67d2213ebdb1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling variadic_arguments v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tests/owned_argument.rs:112:24
[INFO] [stdout]     |
[INFO] [stdout] 112 |     struct AllocSample(Vec<u8>);
[INFO] [stdout]     |            ----------- ^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `AllocSample` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "6f3a58157851276c204b6883d1314841772279ad78e9e50bf9a67d2213ebdb1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f3a58157851276c204b6883d1314841772279ad78e9e50bf9a67d2213ebdb1a", kill_on_drop: false }`
[INFO] [stdout] 6f3a58157851276c204b6883d1314841772279ad78e9e50bf9a67d2213ebdb1a