[INFO] fetching crate word_filter_codegen 0.7.0...
[INFO] checking word_filter_codegen-0.7.0 against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950
[INFO] extracting crate word_filter_codegen 0.7.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate word_filter_codegen 0.7.0 on toolchain 23ffd2897cbb44320ca18dfe4d05dbacb37d55e0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate word_filter_codegen 0.7.0
[INFO] finished tweaking crates.io crate word_filter_codegen 0.7.0
[INFO] tweaked toml for crates.io crate word_filter_codegen 0.7.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4f620b9a5d370bafb9f3ec92d7f12bdcc3cf757665bea826edd80c61b2af7dd
[INFO] running `Command { std: "docker" "start" "-a" "e4f620b9a5d370bafb9f3ec92d7f12bdcc3cf757665bea826edd80c61b2af7dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4f620b9a5d370bafb9f3ec92d7f12bdcc3cf757665bea826edd80c61b2af7dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4f620b9a5d370bafb9f3ec92d7f12bdcc3cf757665bea826edd80c61b2af7dd", kill_on_drop: false }`
[INFO] [stdout] e4f620b9a5d370bafb9f3ec92d7f12bdcc3cf757665bea826edd80c61b2af7dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7759dded0dba94c52cd69a1a459653bccbdcdd74e56bfda4f1e3ef2a3591890
[INFO] running `Command { std: "docker" "start" "-a" "b7759dded0dba94c52cd69a1a459653bccbdcdd74e56bfda4f1e3ef2a3591890", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling nested_containment_list v0.3.1
[INFO] [stderr]    Compiling str_overlap v0.4.3
[INFO] [stderr]    Compiling trybuild v1.0.85
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling word_filter_codegen v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking by_address v1.1.0
[INFO] [stderr]     Checking termcolor v1.3.0
[INFO] [stderr]    Compiling indoc v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking ahash v0.7.6
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking word_filter v0.7.0
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/pda.rs:53:21
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 let mut state = &mut self.states[index];
[INFO] [stdout]    |                     ----^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `self.states` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/pda.rs:255:13
[INFO] [stdout]     |
[INFO] [stdout] 254 |         for return_index in self.find_alias_return_states(s, current_index) {
[INFO] [stdout]     |                             -----------------------------------------------
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             immutable borrow occurs here
[INFO] [stdout]     |                             immutable borrow later used here
[INFO] [stdout] 255 |             self.states[current_index]
[INFO] [stdout]     |             ^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pda.rs:354:17
[INFO] [stdout]     |
[INFO] [stdout] 354 |             for mut state in new_states.iter_mut() {
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `word_filter_codegen` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b7759dded0dba94c52cd69a1a459653bccbdcdd74e56bfda4f1e3ef2a3591890", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7759dded0dba94c52cd69a1a459653bccbdcdd74e56bfda4f1e3ef2a3591890", kill_on_drop: false }`
[INFO] [stdout] b7759dded0dba94c52cd69a1a459653bccbdcdd74e56bfda4f1e3ef2a3591890