[INFO] cloning repository https://github.com/gwillz/tv-rename
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gwillz/tv-rename" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgwillz%2Ftv-rename", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgwillz%2Ftv-rename'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2cb655e8929c9209533f7c612be0da8d230a5ac6
[INFO] checking gwillz/tv-rename against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgwillz%2Ftv-rename" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gwillz/tv-rename on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gwillz/tv-rename
[INFO] finished tweaking git repo https://github.com/gwillz/tv-rename
[INFO] tweaked toml for git repo https://github.com/gwillz/tv-rename written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/gwillz/tv-rename already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] e836279d6868bf7c15c8d6dc706694d40410b34bd1f203df1d75779e75fd304a
[INFO] running `Command { std: "docker" "start" "-a" "e836279d6868bf7c15c8d6dc706694d40410b34bd1f203df1d75779e75fd304a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e836279d6868bf7c15c8d6dc706694d40410b34bd1f203df1d75779e75fd304a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e836279d6868bf7c15c8d6dc706694d40410b34bd1f203df1d75779e75fd304a", kill_on_drop: false }`
[INFO] [stdout] e836279d6868bf7c15c8d6dc706694d40410b34bd1f203df1d75779e75fd304a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c90e57cbe513aae3ae36eabc45bde02d7f5a9b5a5ecb6cbf14b6f2da04e6606d
[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" "c90e57cbe513aae3ae36eabc45bde02d7f5a9b5a5ecb6cbf14b6f2da04e6606d", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.10
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking rustyline v5.0.5
[INFO] [stderr]     Checking tv-rename v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: cannot borrow `guesses` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/guesser.rs:52:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 match guesses.get(&key) {
[INFO] [stdout]    |                       ------- immutable borrow occurs here
[INFO] [stdout] 52 |                     Some(t) => guesses.insert(key, t + 1),
[INFO] [stdout]    |                                ^^^^^^^             - immutable borrow later used here
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `guesses` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/guesser.rs:52:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 match guesses.get(&key) {
[INFO] [stdout]    |                       ------- immutable borrow occurs here
[INFO] [stdout] 52 |                     Some(t) => guesses.insert(key, t + 1),
[INFO] [stdout]    |                                ^^^^^^^             - immutable borrow later used here
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.24s
[INFO] running `Command { std: "docker" "inspect" "c90e57cbe513aae3ae36eabc45bde02d7f5a9b5a5ecb6cbf14b6f2da04e6606d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c90e57cbe513aae3ae36eabc45bde02d7f5a9b5a5ecb6cbf14b6f2da04e6606d", kill_on_drop: false }`
[INFO] [stdout] c90e57cbe513aae3ae36eabc45bde02d7f5a9b5a5ecb6cbf14b6f2da04e6606d