[INFO] updating cached repository https://github.com/williamsandrew/xchg
[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] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 90a231bd8103f7402ba9dd726cfa481f41c3f5fc
[INFO] checking williamsandrew/xchg against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliamsandrew%2Fxchg" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/williamsandrew/xchg on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/williamsandrew/xchg
[INFO] finished tweaking git repo https://github.com/williamsandrew/xchg
[INFO] tweaked toml for git repo https://github.com/williamsandrew/xchg written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/williamsandrew/xchg already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5470b6b7729b3906192cb8c44323bc393a0e98d3ce1e88ac1ca631d36f36dc64
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "5470b6b7729b3906192cb8c44323bc393a0e98d3ce1e88ac1ca631d36f36dc64"`
[INFO] [stderr]     Checking xchg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0664]: clobber should not be surrounded by braces
[INFO] [stderr]   --> src/main.rs:38:32
[INFO] [stderr]    |
[INFO] [stderr] 38 |              : "memory", "cc", "{rcx}", "{r11}"
[INFO] [stderr]    |                                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0664]: clobber should not be surrounded by braces
[INFO] [stderr]   --> src/main.rs:38:41
[INFO] [stderr]    |
[INFO] [stderr] 38 |              : "memory", "cc", "{rcx}", "{r11}"
[INFO] [stderr]    |                                         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/main.rs:18:31
[INFO] [stderr]    |
[INFO] [stderr] 18 | const RENAME_EXCHANGE:  u32 = (1 << 1);
[INFO] [stderr]    |                               ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0664]: clobber should not be surrounded by braces
[INFO] [stderr]   --> src/main.rs:38:32
[INFO] [stderr]    |
[INFO] [stderr] 38 |              : "memory", "cc", "{rcx}", "{r11}"
[INFO] [stderr]    |                                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0664]: clobber should not be surrounded by braces
[INFO] [stderr]   --> src/main.rs:38:41
[INFO] [stderr]    |
[INFO] [stderr] 38 |              : "memory", "cc", "{rcx}", "{r11}"
[INFO] [stderr]    |                                         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0664`.
[INFO] [stderr] error: could not compile `xchg`.
[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] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/main.rs:18:31
[INFO] [stderr]    |
[INFO] [stderr] 18 | const RENAME_EXCHANGE:  u32 = (1 << 1);
[INFO] [stderr]    |                               ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0664`.
[INFO] [stderr] error: could not compile `xchg`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5470b6b7729b3906192cb8c44323bc393a0e98d3ce1e88ac1ca631d36f36dc64"`
[INFO] running `"docker" "rm" "-f" "5470b6b7729b3906192cb8c44323bc393a0e98d3ce1e88ac1ca631d36f36dc64"`
[INFO] [stdout] 5470b6b7729b3906192cb8c44323bc393a0e98d3ce1e88ac1ca631d36f36dc64
