[INFO] cloning repository https://github.com/scaspin/threadsafe-rbt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/scaspin/threadsafe-rbt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscaspin%2Fthreadsafe-rbt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscaspin%2Fthreadsafe-rbt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f672d93925c1b4f635cc9667a342a37344e465af
[INFO] checking scaspin/threadsafe-rbt against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscaspin%2Fthreadsafe-rbt" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/scaspin/threadsafe-rbt on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/scaspin/threadsafe-rbt
[INFO] finished tweaking git repo https://github.com/scaspin/threadsafe-rbt
[INFO] tweaked toml for git repo https://github.com/scaspin/threadsafe-rbt written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/scaspin/threadsafe-rbt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b5148fa5edaf089c832f460582c2e98c434677481e7fc3361a2e9399ee1b55ca
[INFO] running `Command { std: "docker" "start" "-a" "b5148fa5edaf089c832f460582c2e98c434677481e7fc3361a2e9399ee1b55ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5148fa5edaf089c832f460582c2e98c434677481e7fc3361a2e9399ee1b55ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5148fa5edaf089c832f460582c2e98c434677481e7fc3361a2e9399ee1b55ca", kill_on_drop: false }`
[INFO] [stdout] b5148fa5edaf089c832f460582c2e98c434677481e7fc3361a2e9399ee1b55ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7616d5b0da3bc89afc831eb2f8dfd22c0491bff5aafaba4b6e8325139134dec5
[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" "7616d5b0da3bc89afc831eb2f8dfd22c0491bff5aafaba4b6e8325139134dec5", kill_on_drop: false }`
[INFO] [stderr]     Checking threadsafe-rbt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0596]: cannot borrow data in an `Arc` as mutable
[INFO] [stdout]    --> src/lib.rs:423:21
[INFO] [stdout]     |
[INFO] [stdout] 423 |                     tree_clone.add(i);
[INFO] [stdout]     |                     ^^^^^^^^^^ cannot borrow as mutable
[INFO] [stdout]     |
[INFO] [stdout]     = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `Arc<RedBlackTree<usize>>`
[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 E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `threadsafe-rbt`
[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" "7616d5b0da3bc89afc831eb2f8dfd22c0491bff5aafaba4b6e8325139134dec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7616d5b0da3bc89afc831eb2f8dfd22c0491bff5aafaba4b6e8325139134dec5", kill_on_drop: false }`
[INFO] [stdout] 7616d5b0da3bc89afc831eb2f8dfd22c0491bff5aafaba4b6e8325139134dec5