[INFO] updating cached repository https://github.com/ivlevdenis/rust_qt_qml
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3af1c958a1195e392d214a8da2e8367600c18dec
[INFO] documenting ivlevdenis/rust_qt_qml against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivlevdenis%2Frust_qt_qml" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ivlevdenis/rust_qt_qml on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ivlevdenis/rust_qt_qml
[INFO] finished tweaking git repo https://github.com/ivlevdenis/rust_qt_qml
[INFO] tweaked toml for git repo https://github.com/ivlevdenis/rust_qt_qml written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ivlevdenis/rust_qt_qml already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2bedc3e0a3ec89c926d6e319c9b73f5c73036a4390b2c2d69eaf22a72aca3da0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2bedc3e0a3ec89c926d6e319c9b73f5c73036a4390b2c2d69eaf22a72aca3da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bedc3e0a3ec89c926d6e319c9b73f5c73036a4390b2c2d69eaf22a72aca3da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bedc3e0a3ec89c926d6e319c9b73f5c73036a4390b2c2d69eaf22a72aca3da0", kill_on_drop: false }`
[INFO] [stdout] 2bedc3e0a3ec89c926d6e319c9b73f5c73036a4390b2c2d69eaf22a72aca3da0
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e407f40c30d4917fe629303a50bf901bfac606d902aa964fd8d8a5aa4c0412c9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e407f40c30d4917fe629303a50bf901bfac606d902aa964fd8d8a5aa4c0412c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustcxx_common v0.1.0 (https://github.com/google/rustcxx.git#7a662d8c)
[INFO] [stderr]    Compiling gcc v0.3.35
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/rustcxx-688d089645a4aea5/7a662d8/common/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustcxx_common`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e407f40c30d4917fe629303a50bf901bfac606d902aa964fd8d8a5aa4c0412c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e407f40c30d4917fe629303a50bf901bfac606d902aa964fd8d8a5aa4c0412c9", kill_on_drop: false }`
[INFO] [stdout] e407f40c30d4917fe629303a50bf901bfac606d902aa964fd8d8a5aa4c0412c9