[INFO] fetching crate microstr 0.4.0...
[INFO] building microstr-0.4.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate microstr 0.4.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate microstr 0.4.0
[INFO] finished tweaking crates.io crate microstr 0.4.0
[INFO] tweaked toml for crates.io crate microstr 0.4.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate microstr 0.4.0 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] crate crates.io crate microstr 0.4.0 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-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] 582e682eb6de1c44fbd543a3ad74670c15a89a5a7de7d7e9412040a482b8fa7f
[INFO] running `Command { std: "docker" "start" "-a" "582e682eb6de1c44fbd543a3ad74670c15a89a5a7de7d7e9412040a482b8fa7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "582e682eb6de1c44fbd543a3ad74670c15a89a5a7de7d7e9412040a482b8fa7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "582e682eb6de1c44fbd543a3ad74670c15a89a5a7de7d7e9412040a482b8fa7f", kill_on_drop: false }`
[INFO] [stdout] 582e682eb6de1c44fbd543a3ad74670c15a89a5a7de7d7e9412040a482b8fa7f
[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] 8b7d3c13285e9d82c80f9594f5b3203e7d4335cefbb47cd4a7a61f769ce9831e
[INFO] running `Command { std: "docker" "start" "-a" "8b7d3c13285e9d82c80f9594f5b3203e7d4335cefbb47cd4a7a61f769ce9831e", kill_on_drop: false }`
[INFO] [stderr]    Compiling microstr v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "8b7d3c13285e9d82c80f9594f5b3203e7d4335cefbb47cd4a7a61f769ce9831e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b7d3c13285e9d82c80f9594f5b3203e7d4335cefbb47cd4a7a61f769ce9831e", kill_on_drop: false }`
[INFO] [stdout] 8b7d3c13285e9d82c80f9594f5b3203e7d4335cefbb47cd4a7a61f769ce9831e
[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] da26a9e4920817f2c4aa8b0a78b990dd282e05e98802f0b3b5dae41c35cc56aa
[INFO] running `Command { std: "docker" "start" "-a" "da26a9e4920817f2c4aa8b0a78b990dd282e05e98802f0b3b5dae41c35cc56aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling microstr v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> src/tests.rs:221:7
[INFO] [stdout]     |
[INFO] [stdout] 221 | #[cfg(feature = "serde")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `default` and `std`
[INFO] [stdout]     = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "da26a9e4920817f2c4aa8b0a78b990dd282e05e98802f0b3b5dae41c35cc56aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da26a9e4920817f2c4aa8b0a78b990dd282e05e98802f0b3b5dae41c35cc56aa", kill_on_drop: false }`
[INFO] [stdout] da26a9e4920817f2c4aa8b0a78b990dd282e05e98802f0b3b5dae41c35cc56aa