[INFO] cloning repository https://github.com/mxhold/histogramify [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mxhold/histogramify" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmxhold%2Fhistogramify", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmxhold%2Fhistogramify'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 318a01d41ff12eaadf7c5e3f4e7c59bf6628693e [INFO] checking mxhold/histogramify against try#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmxhold%2Fhistogramify" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/mxhold/histogramify [INFO] finished tweaking git repo https://github.com/mxhold/histogramify [INFO] tweaked toml for git repo https://github.com/mxhold/histogramify written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/mxhold/histogramify on toolchain 54e27f559f23913c1d5afb1a0f0114e9e61b81b8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/mxhold/histogramify 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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ff9e224b1534dbbc6a5962d66bf2803d495b71f4c8174c7948ff38b78ff7c80d [INFO] running `Command { std: "docker" "start" "-a" "ff9e224b1534dbbc6a5962d66bf2803d495b71f4c8174c7948ff38b78ff7c80d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ff9e224b1534dbbc6a5962d66bf2803d495b71f4c8174c7948ff38b78ff7c80d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ff9e224b1534dbbc6a5962d66bf2803d495b71f4c8174c7948ff38b78ff7c80d", kill_on_drop: false }` [INFO] [stdout] ff9e224b1534dbbc6a5962d66bf2803d495b71f4c8174c7948ff38b78ff7c80d [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0797cafdf72c803a9e2332b372befd96f7245bd930162817bdd8e47a6e42e211 [INFO] running `Command { std: "docker" "start" "-a" "0797cafdf72c803a9e2332b372befd96f7245bd930162817bdd8e47a6e42e211", kill_on_drop: false }` [INFO] [stderr] Checking histogramify v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] error: could not compile `histogramify` (bin "histogramify") due to 4 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let mut word_frequencies: Arc>> = Arc::new(Mutex::new(HashMap::new())); [INFO] [stdout] | ----^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0597]: `words` does not live long enough [INFO] [stdout] --> src/main.rs:20:29 [INFO] [stdout] | [INFO] [stdout] 17 | fn word_frequencies(words: Vec<&str>) -> HashMap<&str, u32> { [INFO] [stdout] | ----- binding `words` declared here [INFO] [stdout] ... [INFO] [stdout] 20 | let words_for_threads = words.chunks(words.len() / THREADS as usize); [INFO] [stdout] | ^^^^^ borrowed value does not live long enough [INFO] [stdout] ... [INFO] [stdout] 23 | let handle = thread::spawn(move || { [INFO] [stdout] | ______________________- [INFO] [stdout] 24 | | for word in words { [INFO] [stdout] 25 | | word_frequencies [INFO] [stdout] 26 | | .lock() [INFO] [stdout] ... | [INFO] [stdout] 32 | | }); [INFO] [stdout] | |__________- argument requires that `words` is borrowed for `'static` [INFO] [stdout] ... [INFO] [stdout] 41 | } [INFO] [stdout] | - `words` dropped here while still borrowed [INFO] [stdout] | [INFO] [stdout] note: requirement that the value outlives `'static` introduced here [INFO] [stdout] --> /rustc/54e27f559f23913c1d5afb1a0f0114e9e61b81b8/library/std/src/thread/mod.rs:729:15 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0521]: borrowed data escapes outside of function [INFO] [stdout] --> src/main.rs:23:22 [INFO] [stdout] | [INFO] [stdout] 17 | fn word_frequencies(words: Vec<&str>) -> HashMap<&str, u32> { [INFO] [stdout] | ----- - let's call the lifetime of this reference `'1` [INFO] [stdout] | | [INFO] [stdout] | `words` is a reference that is only valid in the function body [INFO] [stdout] ... [INFO] [stdout] 23 | let handle = thread::spawn(move || { [INFO] [stdout] | ______________________^ [INFO] [stdout] 24 | | for word in words { [INFO] [stdout] 25 | | word_frequencies [INFO] [stdout] 26 | | .lock() [INFO] [stdout] ... | [INFO] [stdout] 32 | | }); [INFO] [stdout] | | ^ [INFO] [stdout] | | | [INFO] [stdout] | |__________`words` escapes the function body here [INFO] [stdout] | argument requires that `'1` must outlive `'static` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0507]: cannot move out of dereference of `std::sync::MutexGuard<'_, HashMap<&str, u32>>` [INFO] [stdout] --> src/main.rs:40:5 [INFO] [stdout] | [INFO] [stdout] 40 | *word_frequencies.lock().unwrap() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ move occurs because value has type `HashMap<&str, u32>`, 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] 40 - *word_frequencies.lock().unwrap() [INFO] [stdout] 40 + word_frequencies.lock().unwrap().clone() [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0597]: `word_frequencies` does not live long enough [INFO] [stdout] --> src/main.rs:40:6 [INFO] [stdout] | [INFO] [stdout] 18 | let mut word_frequencies: Arc>> = Arc::new(Mutex::new(HashMap::new())); [INFO] [stdout] | -------------------- binding `word_frequencies` declared here [INFO] [stdout] ... [INFO] [stdout] 40 | *word_frequencies.lock().unwrap() [INFO] [stdout] | ^^^^^^^^^^^^^^^^---------------- [INFO] [stdout] | | [INFO] [stdout] | borrowed value does not live long enough [INFO] [stdout] | a temporary with access to the borrow is created here ... [INFO] [stdout] 41 | } [INFO] [stdout] | - [INFO] [stdout] | | [INFO] [stdout] | `word_frequencies` dropped here while still borrowed [INFO] [stdout] | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `std::sync::MutexGuard` [INFO] [stdout] | [INFO] [stdout] = note: the temporary is part of an expression at the end of a block; [INFO] [stdout] consider forcing this temporary to be dropped sooner, before the block's local variables are dropped [INFO] [stdout] help: for example, you could save the expression's value in a new local variable `x` and then make `x` be the expression at the end of the block [INFO] [stdout] | [INFO] [stdout] 40 | let x = *word_frequencies.lock().unwrap(); x [INFO] [stdout] | +++++++ +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0507, E0521, E0597. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0507`. [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let mut word_frequencies: Arc>> = Arc::new(Mutex::new(HashMap::new())); [INFO] [stdout] | ----^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0597]: `words` does not live long enough [INFO] [stdout] --> src/main.rs:20:29 [INFO] [stdout] | [INFO] [stdout] 17 | fn word_frequencies(words: Vec<&str>) -> HashMap<&str, u32> { [INFO] [stdout] | ----- binding `words` declared here [INFO] [stdout] ... [INFO] [stdout] 20 | let words_for_threads = words.chunks(words.len() / THREADS as usize); [INFO] [stdout] | ^^^^^ borrowed value does not live long enough [INFO] [stdout] ... [INFO] [stdout] 23 | let handle = thread::spawn(move || { [INFO] [stdout] | ______________________- [INFO] [stdout] 24 | | for word in words { [INFO] [stdout] 25 | | word_frequencies [INFO] [stdout] 26 | | .lock() [INFO] [stdout] ... | [INFO] [stdout] 32 | | }); [INFO] [stdout] | |__________- argument requires that `words` is borrowed for `'static` [INFO] [stdout] ... [INFO] [stdout] 41 | } [INFO] [stdout] | - `words` dropped here while still borrowed [INFO] [stdout] | [INFO] [stdout] note: requirement that the value outlives `'static` introduced here [INFO] [stdout] --> /rustc/54e27f559f23913c1d5afb1a0f0114e9e61b81b8/library/std/src/thread/mod.rs:729:15 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0521]: borrowed data escapes outside of function [INFO] [stdout] --> src/main.rs:23:22 [INFO] [stdout] | [INFO] [stdout] 17 | fn word_frequencies(words: Vec<&str>) -> HashMap<&str, u32> { [INFO] [stdout] | ----- - let's call the lifetime of this reference `'1` [INFO] [stdout] | | [INFO] [stdout] | `words` is a reference that is only valid in the function body [INFO] [stdout] ... [INFO] [stdout] 23 | let handle = thread::spawn(move || { [INFO] [stdout] | ______________________^ [INFO] [stdout] 24 | | for word in words { [INFO] [stdout] 25 | | word_frequencies [INFO] [stdout] 26 | | .lock() [INFO] [stdout] ... | [INFO] [stdout] 32 | | }); [INFO] [stdout] | | ^ [INFO] [stdout] | | | [INFO] [stdout] | |__________`words` escapes the function body here [INFO] [stdout] | argument requires that `'1` must outlive `'static` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0507]: cannot move out of dereference of `std::sync::MutexGuard<'_, HashMap<&str, u32>>` [INFO] [stdout] --> src/main.rs:40:5 [INFO] [stdout] | [INFO] [stdout] 40 | *word_frequencies.lock().unwrap() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ move occurs because value has type `HashMap<&str, u32>`, 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] 40 - *word_frequencies.lock().unwrap() [INFO] [stdout] 40 + word_frequencies.lock().unwrap().clone() [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0597]: `word_frequencies` does not live long enough [INFO] [stdout] --> src/main.rs:40:6 [INFO] [stdout] | [INFO] [stdout] 18 | let mut word_frequencies: Arc>> = Arc::new(Mutex::new(HashMap::new())); [INFO] [stdout] | -------------------- binding `word_frequencies` declared here [INFO] [stdout] ... [INFO] [stdout] 40 | *word_frequencies.lock().unwrap() [INFO] [stdout] | ^^^^^^^^^^^^^^^^---------------- [INFO] [stdout] | | [INFO] [stdout] | borrowed value does not live long enough [INFO] [stdout] | a temporary with access to the borrow is created here ... [INFO] [stdout] 41 | } [INFO] [stdout] | - [INFO] [stdout] | | [INFO] [stdout] | `word_frequencies` dropped here while still borrowed [INFO] [stdout] | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `std::sync::MutexGuard` [INFO] [stdout] | [INFO] [stdout] = note: the temporary is part of an expression at the end of a block; [INFO] [stdout] consider forcing this temporary to be dropped sooner, before the block's local variables are dropped [INFO] [stdout] help: for example, you could save the expression's value in a new local variable `x` and then make `x` be the expression at the end of the block [INFO] [stdout] | [INFO] [stdout] 40 | let x = *word_frequencies.lock().unwrap(); x [INFO] [stdout] | +++++++ +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0507, E0521, E0597. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0507`. [INFO] [stdout] [INFO] [stderr] error: could not compile `histogramify` (bin "histogramify" test) due to 4 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "0797cafdf72c803a9e2332b372befd96f7245bd930162817bdd8e47a6e42e211", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0797cafdf72c803a9e2332b372befd96f7245bd930162817bdd8e47a6e42e211", kill_on_drop: false }` [INFO] [stdout] 0797cafdf72c803a9e2332b372befd96f7245bd930162817bdd8e47a6e42e211