[INFO] cloning repository https://github.com/codeandplay/rust_in_action_examples [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codeandplay/rust_in_action_examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodeandplay%2Frust_in_action_examples", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodeandplay%2Frust_in_action_examples'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] eeb4d1a40dd3445150dec6122f9a2f2011da65ae [INFO] checking codeandplay/rust_in_action_examples against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodeandplay%2Frust_in_action_examples" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/codeandplay/rust_in_action_examples on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/codeandplay/rust_in_action_examples [INFO] finished tweaking git repo https://github.com/codeandplay/rust_in_action_examples [INFO] tweaked toml for git repo https://github.com/codeandplay/rust_in_action_examples written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/codeandplay/rust_in_action_examples already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fe1406673090b329626b837f13f52391cae45efbcfb9570d0d23a43fc0c6d4d9 [INFO] running `Command { std: "docker" "start" "-a" "fe1406673090b329626b837f13f52391cae45efbcfb9570d0d23a43fc0c6d4d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fe1406673090b329626b837f13f52391cae45efbcfb9570d0d23a43fc0c6d4d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fe1406673090b329626b837f13f52391cae45efbcfb9570d0d23a43fc0c6d4d9", kill_on_drop: false }` [INFO] [stdout] fe1406673090b329626b837f13f52391cae45efbcfb9570d0d23a43fc0c6d4d9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ed5cdc159db3a121eb2b05caf12c9946269cb7b4fc6a4d1610b800a73df0164e [INFO] running `Command { std: "docker" "start" "-a" "ed5cdc159db3a121eb2b05caf12c9946269cb7b4fc6a4d1610b800a73df0164e", 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] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.88 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking once_cell v1.7.2 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking thread_local v1.1.3 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling num-bigint v0.4.0 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling num-rational v0.4.0 [INFO] [stderr] Checking regex v1.4.3 [INFO] [stderr] Checking getrandom v0.1.16 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking num-complex v0.4.0 [INFO] [stderr] Checking num v0.4.0 [INFO] [stderr] Checking example v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0382]: borrow of moved value: `letters` [INFO] [stdout] --> src/bin/1_9_borrow_after_move.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut letters = vec!["a", "b", "c"]; [INFO] [stdout] | ----------- move occurs because `letters` has type `Vec<&str>`, which does not implement the `Copy` trait [INFO] [stdout] 3 | [INFO] [stdout] 4 | for letter in letters { [INFO] [stdout] | ------- [INFO] [stdout] | | [INFO] [stdout] | `letters` moved due to this implicit call to `.into_iter()` [INFO] [stdout] | help: consider borrowing to avoid moving into the for loop: `&letters` [INFO] [stdout] 5 | println!("{}", letter); [INFO] [stdout] 6 | letters.push(letter.clone()); [INFO] [stdout] | ^^^^^^^ value borrowed here after move [INFO] [stdout] | [INFO] [stdout] note: this function takes ownership of the receiver `self`, which moves `letters` [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 E0382`. [INFO] [stdout] [INFO] [stderr] error: could not compile `example` due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused variable: `needle` [INFO] [stdout] --> src/bin/2_14_match.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let needle = 42; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_needle` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unknown lint: `dead_close` [INFO] [stdout] --> src/bin/3_22_implementing_display.rs:3:10 [INFO] [stdout] | [INFO] [stdout] 3 | #![allow(dead_close)] [INFO] [stdout] | ^^^^^^^^^^ help: did you mean: `dead_code` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unknown_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0382]: borrow of moved value: `grains` [INFO] [stdout] --> src/bin/1_6_dangling_pointer.rs:18:22 [INFO] [stdout] | [INFO] [stdout] 12 | let mut grains: Vec = vec![]; [INFO] [stdout] | ---------- move occurs because `grains` has type `Vec`, which does not implement the `Copy` trait [INFO] [stdout] ... [INFO] [stdout] 16 | drop(grains); [INFO] [stdout] | ------ value moved here [INFO] [stdout] 17 | [INFO] [stdout] 18 | println!("{:?}", grains); [INFO] [stdout] | ^^^^^^ value borrowed here after move [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 E0382`. [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sat_id` [INFO] [stdout] --> src/bin/4_4_ownership_moved.rs:11:17 [INFO] [stdout] | [INFO] [stdout] 11 | fn check_status(sat_id: CubeSat) -> StatusMessage { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sat_id` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/bin/2_4_float_number_nan.rs:2:35 [INFO] [stdout] | [INFO] [stdout] 2 | assert!(f32::NAN == f32::NAN, false); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 2 | assert!(f32::NAN == f32::NAN, "{}", false); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sat_id` [INFO] [stdout] --> src/bin/4_20_derive_copy_for_type.rs:11:17 [INFO] [stdout] | [INFO] [stdout] 11 | fn check_status(sat_id: CubeSat) -> StatusMessage { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sat_id` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a_status` [INFO] [stdout] --> src/bin/4_20_derive_copy_for_type.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let a_status = check_status(sat_a); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_status` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a_status` [INFO] [stdout] --> src/bin/4_20_derive_copy_for_type.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let a_status = check_status(sat_a); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_status` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a_status` [INFO] [stdout] --> src/bin/4_4_ownership_moved.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let a_status = check_status(sat_a); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_status` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a_status` [INFO] [stdout] --> src/bin/4_4_ownership_moved.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let a_status = check_status(sat_a); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_status` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Open` [INFO] [stdout] --> src/bin/3_22_implementing_display.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | Open, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `save_to` [INFO] [stdout] --> src/bin/3_19_read_trait.rs:10:26 [INFO] [stdout] | [INFO] [stdout] 10 | fn read(self: &File, save_to: &mut Vec) -> Result { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_save_to` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0373]: closure may outlive the current function, but it borrows `data`, which is owned by the current function [INFO] [stdout] --> src/bin/1_7_data_race.rs:6:19 [INFO] [stdout] | [INFO] [stdout] 6 | thread::spawn(|| { [INFO] [stdout] | ^^ may outlive borrowed value `data` [INFO] [stdout] 7 | data = 500; [INFO] [stdout] | ---- `data` is borrowed here [INFO] [stdout] | [INFO] [stdout] note: function requires argument type to outlive `'static` [INFO] [stdout] --> src/bin/1_7_data_race.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | / thread::spawn(|| { [INFO] [stdout] 7 | | data = 500; [INFO] [stdout] 8 | | }); [INFO] [stdout] | |______^ [INFO] [stdout] help: to force the closure to take ownership of `data` (and any other referenced variables), use the `move` keyword [INFO] [stdout] | [INFO] [stdout] 6 | thread::spawn(move || { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `data` as mutable more than once at a time [INFO] [stdout] --> src/bin/1_7_data_race.rs:10:19 [INFO] [stdout] | [INFO] [stdout] 6 | thread::spawn(|| { [INFO] [stdout] | - -- first mutable borrow occurs here [INFO] [stdout] | _____| [INFO] [stdout] | | [INFO] [stdout] 7 | | data = 500; [INFO] [stdout] | | ---- first borrow occurs due to use of `data` in closure [INFO] [stdout] 8 | | }); [INFO] [stdout] | |______- argument requires that `data` is borrowed for `'static` [INFO] [stdout] 9 | [INFO] [stdout] 10 | thread::spawn(|| { [INFO] [stdout] | ^^ second mutable borrow occurs here [INFO] [stdout] 11 | data = 1000; [INFO] [stdout] | ---- second borrow occurs due to use of `data` in closure [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0373]: closure may outlive the current function, but it borrows `data`, which is owned by the current function [INFO] [stdout] --> src/bin/1_7_data_race.rs:10:19 [INFO] [stdout] | [INFO] [stdout] 10 | thread::spawn(|| { [INFO] [stdout] | ^^ may outlive borrowed value `data` [INFO] [stdout] 11 | data = 1000; [INFO] [stdout] | ---- `data` is borrowed here [INFO] [stdout] | [INFO] [stdout] note: function requires argument type to outlive `'static` [INFO] [stdout] --> src/bin/1_7_data_race.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | / thread::spawn(|| { [INFO] [stdout] 11 | | data = 1000; [INFO] [stdout] 12 | | }); [INFO] [stdout] | |______^ [INFO] [stdout] help: to force the closure to take ownership of `data` (and any other referenced variables), use the `move` keyword [INFO] [stdout] | [INFO] [stdout] 10 | thread::spawn(move || { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `data` as immutable because it is also borrowed as mutable [INFO] [stdout] --> src/bin/1_7_data_race.rs:14:20 [INFO] [stdout] | [INFO] [stdout] 6 | thread::spawn(|| { [INFO] [stdout] | - -- mutable borrow occurs here [INFO] [stdout] | _____| [INFO] [stdout] | | [INFO] [stdout] 7 | | data = 500; [INFO] [stdout] | | ---- first borrow occurs due to use of `data` in closure [INFO] [stdout] 8 | | }); [INFO] [stdout] | |______- argument requires that `data` is borrowed for `'static` [INFO] [stdout] ... [INFO] [stdout] 14 | println!("{}", data); [INFO] [stdout] | ^^^^ immutable borrow occurs here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0373, E0499, E0502. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0373`. [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0382]: use of moved value: `sat_a` [INFO] [stdout] --> src/bin/4_4_ownership_moved.rs:19:33 [INFO] [stdout] | [INFO] [stdout] 16 | let sat_a = CubeSat { id: 0 }; [INFO] [stdout] | ----- move occurs because `sat_a` has type `CubeSat`, which does not implement the `Copy` trait [INFO] [stdout] 17 | [INFO] [stdout] 18 | let a_status = check_status(sat_a); [INFO] [stdout] | ----- value moved here [INFO] [stdout] 19 | let a_status = check_status(sat_a); [INFO] [stdout] | ^^^^^ value used here after move [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0382`. [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "ed5cdc159db3a121eb2b05caf12c9946269cb7b4fc6a4d1610b800a73df0164e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ed5cdc159db3a121eb2b05caf12c9946269cb7b4fc6a4d1610b800a73df0164e", kill_on_drop: false }` [INFO] [stdout] ed5cdc159db3a121eb2b05caf12c9946269cb7b4fc6a4d1610b800a73df0164e