[INFO] cloning repository https://github.com/qwertxzy/rem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qwertxzy/rem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqwertxzy%2Frem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqwertxzy%2Frem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1355d1502f7782b887c5eb93cd06cc26e5fc0b48
[INFO] checking qwertxzy/rem against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqwertxzy%2Frem" "/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/qwertxzy/rem on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/qwertxzy/rem
[INFO] finished tweaking git repo https://github.com/qwertxzy/rem
[INFO] tweaked toml for git repo https://github.com/qwertxzy/rem written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/qwertxzy/rem already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 720f62c5ab872ae0ea3047b6aa36b0052f53e8b39389b380430fa7fc50ec64d2
[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" "720f62c5ab872ae0ea3047b6aa36b0052f53e8b39389b380430fa7fc50ec64d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "720f62c5ab872ae0ea3047b6aa36b0052f53e8b39389b380430fa7fc50ec64d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "720f62c5ab872ae0ea3047b6aa36b0052f53e8b39389b380430fa7fc50ec64d2", kill_on_drop: false }`
[INFO] [stdout] 720f62c5ab872ae0ea3047b6aa36b0052f53e8b39389b380430fa7fc50ec64d2
[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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec55d7954a427c03d7202f184bc82a7ea70c8fc30b235984cefe40228080976a
[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" "ec55d7954a427c03d7202f184bc82a7ea70c8fc30b235984cefe40228080976a", kill_on_drop: false }`
[INFO] [stderr]     Checking rem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0616]: field `GPR` of struct `CPU` is private
[INFO] [stdout]   --> src/exceptionprocessor.rs:23:34
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let syscall_number = cpu.GPR[2]; //read the syscall number from $v0
[INFO] [stdout]    |                                  ^^^ private field
[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 E0616`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rem`
[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] [stdout] error[E0616]: field `GPR` of struct `CPU` is private
[INFO] [stdout]   --> src/exceptionprocessor.rs:23:34
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let syscall_number = cpu.GPR[2]; //read the syscall number from $v0
[INFO] [stdout]    |                                  ^^^ private field
[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 E0616`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ec55d7954a427c03d7202f184bc82a7ea70c8fc30b235984cefe40228080976a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec55d7954a427c03d7202f184bc82a7ea70c8fc30b235984cefe40228080976a", kill_on_drop: false }`
[INFO] [stdout] ec55d7954a427c03d7202f184bc82a7ea70c8fc30b235984cefe40228080976a