[INFO] fetching crate cargo-xbuild 0.6.6...
[INFO] building cargo-xbuild-0.6.6 against try#3bbb5242a8064de4ca3af4036745ddf603ddaa85 for pr-101929
[INFO] extracting crate cargo-xbuild 0.6.6 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate cargo-xbuild 0.6.6 on toolchain 3bbb5242a8064de4ca3af4036745ddf603ddaa85
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bbb5242a8064de4ca3af4036745ddf603ddaa85" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-xbuild 0.6.6
[INFO] finished tweaking crates.io crate cargo-xbuild 0.6.6
[INFO] tweaked toml for crates.io crate cargo-xbuild 0.6.6 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate cargo-xbuild 0.6.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bbb5242a8064de4ca3af4036745ddf603ddaa85" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:e92e462e59ac3446a933540fd361ddeb5362c86f92d432d6a560a917a465022e" "/opt/rustwide/cargo-home/bin/cargo" "+3bbb5242a8064de4ca3af4036745ddf603ddaa85" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8d39fee357ad27202eb25ca8e455d125330ade3c574466a15d9679503e3d4d6
[INFO] running `Command { std: "docker" "start" "-a" "f8d39fee357ad27202eb25ca8e455d125330ade3c574466a15d9679503e3d4d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8d39fee357ad27202eb25ca8e455d125330ade3c574466a15d9679503e3d4d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8d39fee357ad27202eb25ca8e455d125330ade3c574466a15d9679503e3d4d6", kill_on_drop: false }`
[INFO] [stdout] f8d39fee357ad27202eb25ca8e455d125330ade3c574466a15d9679503e3d4d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:e92e462e59ac3446a933540fd361ddeb5362c86f92d432d6a560a917a465022e" "/opt/rustwide/cargo-home/bin/cargo" "+3bbb5242a8064de4ca3af4036745ddf603ddaa85" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1dd4b41f89189e518f4c2c2ae64bdc3d6fcc7625a695dd9c8132fc2936147cf
[INFO] running `Command { std: "docker" "start" "-a" "e1dd4b41f89189e518f4c2c2ae64bdc3d6fcc7625a695dd9c8132fc2936147cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling cargo-xbuild v0.6.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling semver v0.10.0
[INFO] [stderr]    Compiling toml v0.5.7
[INFO] [stderr]    Compiling cargo_metadata v0.11.4
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/lib.rs:204:77
[INFO] [stdout]     |
[INFO] [stdout] 204 |               error and will cause build scripts of dependencies to break.\n\n\
[INFO] [stdout]     |  _____________________________________________________________________________^
[INFO] [stdout] 205 | |
[INFO] [stdout] 206 | |             To build for the target system either pass a `--target` argument or \
[INFO] [stdout]     | |____________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-xbuild`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name cargo_xt --edition=2018 src/bin/cargo-xt.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=516c4bc94ed66b07 -C extra-filename=-516c4bc94ed66b07 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-48f4c80a2e775c4f.rlib --extern xargo_lib=/opt/rustwide/target/debug/deps/libxargo_lib-91931bf7059d6da3.rlib --extern cargo_metadata=/opt/rustwide/target/debug/deps/libcargo_metadata-44f114b1fd382845.rlib --extern libc=/opt/rustwide/target/debug/deps/liblibc-549994e888c5650c.rlib --extern rustc_version=/opt/rustwide/target/debug/deps/librustc_version-1129fcf04d3a983d.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-fddf0bd3be1abbea.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-b19e65b3608a02e4.rlib --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-2f1ccce587449f0e.rlib --extern toml=/opt/rustwide/target/debug/deps/libtoml-f6b5bbbc61811ec5.rlib --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-cca34820a26a7d35.rlib --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e1dd4b41f89189e518f4c2c2ae64bdc3d6fcc7625a695dd9c8132fc2936147cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1dd4b41f89189e518f4c2c2ae64bdc3d6fcc7625a695dd9c8132fc2936147cf", kill_on_drop: false }`
[INFO] [stdout] e1dd4b41f89189e518f4c2c2ae64bdc3d6fcc7625a695dd9c8132fc2936147cf