[INFO] updating cached repository https://github.com/tarka/xcp
[INFO] running `"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"`
[INFO] [stderr] From https://github.com/tarka/xcp
[INFO] [stderr]    a1c625d..e8c3992  fiemap-sparse-mapping -> fiemap-sparse-mapping
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 47d1717b3fe4eb1687e6150dd7c8268fa094555f
[INFO] checking tarka/xcp against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarka%2Fxcp" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tarka/xcp on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tarka/xcp
[INFO] finished tweaking git repo https://github.com/tarka/xcp
[INFO] tweaked toml for git repo https://github.com/tarka/xcp written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/tarka/xcp already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "RUSTFLAGS=--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" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7773e82b55c3c9e0a75b0caed3175abc895018f77abd75af9c35e9e8029ae39e
[INFO] running `"docker" "start" "-a" "7773e82b55c3c9e0a75b0caed3175abc895018f77abd75af9c35e9e8029ae39e"`
[INFO] [stderr]    Compiling anyhow v1.0.21
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]     Checking unbytify v0.2.0
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking simplelog v0.7.4
[INFO] [stderr]     Checking console v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking indicatif v0.13.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.100
[INFO] [stderr]    Compiling thiserror-impl v1.0.5
[INFO] [stderr]    Compiling structopt-derive v0.3.4
[INFO] [stderr]    Compiling test-case v0.3.3
[INFO] [stderr]     Checking thiserror v1.0.5
[INFO] [stderr]     Checking structopt v0.3.4
[INFO] [stderr]     Checking xcp v0.6.3-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.100
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking escargot v0.5.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] running `"docker" "inspect" "7773e82b55c3c9e0a75b0caed3175abc895018f77abd75af9c35e9e8029ae39e"`
[INFO] running `"docker" "rm" "-f" "7773e82b55c3c9e0a75b0caed3175abc895018f77abd75af9c35e9e8029ae39e"`
[INFO] [stdout] 7773e82b55c3c9e0a75b0caed3175abc895018f77abd75af9c35e9e8029ae39e