[INFO] cloning repository https://github.com/AgeOfWar/crossword
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AgeOfWar/crossword" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAgeOfWar%2Fcrossword", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAgeOfWar%2Fcrossword'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2abffe938ee7d95a07c124c8ef6c0835c498eab7
[INFO] checking AgeOfWar/crossword against try#5fee451ebd94296ea05214e819c311e164b30af6 for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAgeOfWar%2Fcrossword" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AgeOfWar/crossword on toolchain 5fee451ebd94296ea05214e819c311e164b30af6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AgeOfWar/crossword
[INFO] finished tweaking git repo https://github.com/AgeOfWar/crossword
[INFO] tweaked toml for git repo https://github.com/AgeOfWar/crossword written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/AgeOfWar/crossword already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7aca4c3c64076a82d1564588603ee6bcbd0f856f6a6d6f8a2d53e089c0874784
[INFO] running `Command { std: "docker" "start" "-a" "7aca4c3c64076a82d1564588603ee6bcbd0f856f6a6d6f8a2d53e089c0874784", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7aca4c3c64076a82d1564588603ee6bcbd0f856f6a6d6f8a2d53e089c0874784", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aca4c3c64076a82d1564588603ee6bcbd0f856f6a6d6f8a2d53e089c0874784", kill_on_drop: false }`
[INFO] [stdout] 7aca4c3c64076a82d1564588603ee6bcbd0f856f6a6d6f8a2d53e089c0874784
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+5fee451ebd94296ea05214e819c311e164b30af6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0eb7bccf0d71d9d6c3b2e0c6e96a31e3888d3d0ee4e51c5c1171545a7ff12800
[INFO] running `Command { std: "docker" "start" "-a" "0eb7bccf0d71d9d6c3b2e0c6e96a31e3888d3d0ee4e51c5c1171545a7ff12800", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crossword v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/trie.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let mut result = self.find_reverse(word);
[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] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/trie.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let mut result = self.find_reverse(word);
[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[E0382]: use of moved value: `result`
[INFO] [stdout]   --> src/trie.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let mut result = self.find_reverse(word);
[INFO] [stdout]    |             ---------- move occurs because `result` has type `Vec<Vec<usize>>`, which does not implement the `Copy` trait
[INFO] [stdout] 34 |         for mut word in result {
[INFO] [stdout]    |                         ------ `result` moved due to this implicit call to `.into_iter()`
[INFO] [stdout] ...
[INFO] [stdout] 37 |         result
[INFO] [stdout]    |         ^^^^^^ value used here after move
[INFO] [stdout]    |
[INFO] [stdout] note: `into_iter` takes ownership of the receiver `self`, which moves `result`
[INFO] [stdout]   --> /rustc/5fee451ebd94296ea05214e819c311e164b30af6/library/core/src/iter/traits/collect.rs:313:18
[INFO] [stdout] help: consider iterating over a slice of the `Vec<Vec<usize>>`'s content to avoid moving into the `for` loop
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for mut word in &result {
[INFO] [stdout]    |                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0382]: use of moved value: `result`
[INFO] [stdout]   --> src/trie.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let mut result = self.find_reverse(word);
[INFO] [stdout]    |             ---------- move occurs because `result` has type `Vec<Vec<usize>>`, which does not implement the `Copy` trait
[INFO] [stdout] 34 |         for mut word in result {
[INFO] [stdout]    |                         ------ `result` moved due to this implicit call to `.into_iter()`
[INFO] [stdout] ...
[INFO] [stdout] 37 |         result
[INFO] [stdout]    |         ^^^^^^ value used here after move
[INFO] [stdout]    |
[INFO] [stdout] note: `into_iter` takes ownership of the receiver `self`, which moves `result`
[INFO] [stdout]   --> /rustc/5fee451ebd94296ea05214e819c311e164b30af6/library/core/src/iter/traits/collect.rs:313:18
[INFO] [stdout] help: consider iterating over a slice of the `Vec<Vec<usize>>`'s content to avoid moving into the `for` loop
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for mut word in &result {
[INFO] [stdout]    |                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/trie.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut result = self.find_reverse_random(word, rng);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/trie.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut result = self.find_reverse_random(word, rng);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0382]: use of moved value: `result`
[INFO] [stdout]   --> src/trie.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut result = self.find_reverse_random(word, rng);
[INFO] [stdout]    |             ---------- move occurs because `result` has type `Vec<Vec<usize>>`, which does not implement the `Copy` trait
[INFO] [stdout] 75 |         for mut word in result {
[INFO] [stdout]    |                         ------ `result` moved due to this implicit call to `.into_iter()`
[INFO] [stdout] ...
[INFO] [stdout] 78 |         result
[INFO] [stdout]    |         ^^^^^^ value used here after move
[INFO] [stdout]    |
[INFO] [stdout] note: `into_iter` takes ownership of the receiver `self`, which moves `result`
[INFO] [stdout]   --> /rustc/5fee451ebd94296ea05214e819c311e164b30af6/library/core/src/iter/traits/collect.rs:313:18
[INFO] [stdout] help: consider iterating over a slice of the `Vec<Vec<usize>>`'s content to avoid moving into the `for` loop
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for mut word in &result {
[INFO] [stdout]    |                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0382]: use of moved value: `result`
[INFO] [stdout]   --> src/trie.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut result = self.find_reverse_random(word, rng);
[INFO] [stdout]    |             ---------- move occurs because `result` has type `Vec<Vec<usize>>`, which does not implement the `Copy` trait
[INFO] [stdout] 75 |         for mut word in result {
[INFO] [stdout]    |                         ------ `result` moved due to this implicit call to `.into_iter()`
[INFO] [stdout] ...
[INFO] [stdout] 78 |         result
[INFO] [stdout]    |         ^^^^^^ value used here after move
[INFO] [stdout]    |
[INFO] [stdout] note: `into_iter` takes ownership of the receiver `self`, which moves `result`
[INFO] [stdout]   --> /rustc/5fee451ebd94296ea05214e819c311e164b30af6/library/core/src/iter/traits/collect.rs:313:18
[INFO] [stdout] help: consider iterating over a slice of the `Vec<Vec<usize>>`'s content to avoid moving into the `for` loop
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for mut word in &result {
[INFO] [stdout]    |                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of `*word` which is behind a mutable reference
[INFO] [stdout]    --> src/trie.rs:157:37
[INFO] [stdout]     |
[INFO] [stdout] 157 |                         return Some(*word);
[INFO] [stdout]     |                                     ^^^^^ move occurs because `*word` has type `Vec<usize>`, which does not implement the `Copy` trait
[INFO] [stdout]     |
[INFO] [stdout] help: consider cloning the value if the performance cost is acceptable
[INFO] [stdout]     |
[INFO] [stdout] 157 -                         return Some(*word);
[INFO] [stdout] 157 +                         return Some(word.clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of `*word` which is behind a mutable reference
[INFO] [stdout]    --> src/trie.rs:157:37
[INFO] [stdout]     |
[INFO] [stdout] 157 |                         return Some(*word);
[INFO] [stdout]     |                                     ^^^^^ move occurs because `*word` has type `Vec<usize>`, which does not implement the `Copy` trait
[INFO] [stdout]     |
[INFO] [stdout] help: consider cloning the value if the performance cost is acceptable
[INFO] [stdout]     |
[INFO] [stdout] 157 -                         return Some(*word);
[INFO] [stdout] 157 +                         return Some(word.clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of `*word` which is behind a mutable reference
[INFO] [stdout]    --> src/trie.rs:166:37
[INFO] [stdout]     |
[INFO] [stdout] 166 |                         return Some(*word);
[INFO] [stdout]     |                                     ^^^^^ move occurs because `*word` has type `Vec<usize>`, which does not implement the `Copy` trait
[INFO] [stdout]     |
[INFO] [stdout] help: consider cloning the value if the performance cost is acceptable
[INFO] [stdout]     |
[INFO] [stdout] 166 -                         return Some(*word);
[INFO] [stdout] 166 +                         return Some(word.clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of `*word` which is behind a mutable reference
[INFO] [stdout]    --> src/trie.rs:166:37
[INFO] [stdout]     |
[INFO] [stdout] 166 |                         return Some(*word);
[INFO] [stdout]     |                                     ^^^^^ move occurs because `*word` has type `Vec<usize>`, which does not implement the `Copy` trait
[INFO] [stdout]     |
[INFO] [stdout] help: consider cloning the value if the performance cost is acceptable
[INFO] [stdout]     |
[INFO] [stdout] 166 -                         return Some(*word);
[INFO] [stdout] 166 +                         return Some(word.clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0382, E0507.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0382`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0382, E0507.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0382`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crossword` (bin "crossword") due to 4 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `crossword` (bin "crossword" test) due to 4 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0eb7bccf0d71d9d6c3b2e0c6e96a31e3888d3d0ee4e51c5c1171545a7ff12800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eb7bccf0d71d9d6c3b2e0c6e96a31e3888d3d0ee4e51c5c1171545a7ff12800", kill_on_drop: false }`
[INFO] [stdout] 0eb7bccf0d71d9d6c3b2e0c6e96a31e3888d3d0ee4e51c5c1171545a7ff12800
