[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] testing scaspin/threadsafe-rbt against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscaspin%2Fthreadsafe-rbt" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/scaspin/threadsafe-rbt on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "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-15/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc084c7ca4cce7e5f86bebfbf7787338ee8037c9afb3d27fc32e93ea1e61d79d
[INFO] running `Command { std: "docker" "start" "-a" "cc084c7ca4cce7e5f86bebfbf7787338ee8037c9afb3d27fc32e93ea1e61d79d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc084c7ca4cce7e5f86bebfbf7787338ee8037c9afb3d27fc32e93ea1e61d79d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc084c7ca4cce7e5f86bebfbf7787338ee8037c9afb3d27fc32e93ea1e61d79d", kill_on_drop: false }`
[INFO] [stdout] cc084c7ca4cce7e5f86bebfbf7787338ee8037c9afb3d27fc32e93ea1e61d79d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7edf5f3e7a8483080f50f9e5c15c1a5e7793f76640ea9729f388301964045a7c
[INFO] running `Command { std: "docker" "start" "-a" "7edf5f3e7a8483080f50f9e5c15c1a5e7793f76640ea9729f388301964045a7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling threadsafe-rbt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "7edf5f3e7a8483080f50f9e5c15c1a5e7793f76640ea9729f388301964045a7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7edf5f3e7a8483080f50f9e5c15c1a5e7793f76640ea9729f388301964045a7c", kill_on_drop: false }`
[INFO] [stdout] 7edf5f3e7a8483080f50f9e5c15c1a5e7793f76640ea9729f388301964045a7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a72b30513f68de9b2f0ad3a84a9f80fd70101c35be36360e45946a5ee29386e3
[INFO] running `Command { std: "docker" "start" "-a" "a72b30513f68de9b2f0ad3a84a9f80fd70101c35be36360e45946a5ee29386e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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" "a72b30513f68de9b2f0ad3a84a9f80fd70101c35be36360e45946a5ee29386e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a72b30513f68de9b2f0ad3a84a9f80fd70101c35be36360e45946a5ee29386e3", kill_on_drop: false }`
[INFO] [stdout] a72b30513f68de9b2f0ad3a84a9f80fd70101c35be36360e45946a5ee29386e3