[INFO] fetching crate simpl 0.1.0...
[INFO] building simpl-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate simpl 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate simpl 0.1.0
[INFO] finished tweaking crates.io crate simpl 0.1.0
[INFO] tweaked toml for crates.io crate simpl 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate simpl 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 776ea188f0588b0f09a828dc5ee6af93951cf1c323bfaec325e96b43d20a50eb
[INFO] running `Command { std: "docker" "start" "-a" "776ea188f0588b0f09a828dc5ee6af93951cf1c323bfaec325e96b43d20a50eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "776ea188f0588b0f09a828dc5ee6af93951cf1c323bfaec325e96b43d20a50eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "776ea188f0588b0f09a828dc5ee6af93951cf1c323bfaec325e96b43d20a50eb", kill_on_drop: false }`
[INFO] [stdout] 776ea188f0588b0f09a828dc5ee6af93951cf1c323bfaec325e96b43d20a50eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 5ce379cf04b7be05fccb85a9098f0cc96de95149d2ba2fcd94987e12a12e06a6
[INFO] running `Command { std: "docker" "start" "-a" "5ce379cf04b7be05fccb85a9098f0cc96de95149d2ba2fcd94987e12a12e06a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling simpl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "5ce379cf04b7be05fccb85a9098f0cc96de95149d2ba2fcd94987e12a12e06a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ce379cf04b7be05fccb85a9098f0cc96de95149d2ba2fcd94987e12a12e06a6", kill_on_drop: false }`
[INFO] [stdout] 5ce379cf04b7be05fccb85a9098f0cc96de95149d2ba2fcd94987e12a12e06a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 9e1271ff27bb2ab0b778c00672885631c078d0ff3ced786796f1995583e3154d
[INFO] running `Command { std: "docker" "start" "-a" "9e1271ff27bb2ab0b778c00672885631c078d0ff3ced786796f1995583e3154d", kill_on_drop: false }`
[INFO] [stderr]    Compiling simpl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> src/lib.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |               pub data: Option<String>,
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |       super::err!(TestError,
[INFO] [stdout]    |       -           --------- field in this struct
[INFO] [stdout]    |  _____|
[INFO] [stdout]    | |
[INFO] [stdout] 95 | |         {
[INFO] [stdout] 96 | |             Io@std::io::Error;
[INFO] [stdout] 97 | |         }
[INFO] [stdout] 98 | |     );
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `super::err` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "9e1271ff27bb2ab0b778c00672885631c078d0ff3ced786796f1995583e3154d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e1271ff27bb2ab0b778c00672885631c078d0ff3ced786796f1995583e3154d", kill_on_drop: false }`
[INFO] [stdout] 9e1271ff27bb2ab0b778c00672885631c078d0ff3ced786796f1995583e3154d