[INFO] cloning repository https://github.com/weiyinfu/learnRust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/weiyinfu/learnRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweiyinfu%2FlearnRust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweiyinfu%2FlearnRust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e8ae9912ed3b3c3b6cee70eec8b73c7dad18becc [INFO] testing weiyinfu/learnRust against 1.60.0 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweiyinfu%2FlearnRust" "/workspace/builds/worker-25/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-25/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/weiyinfu/learnRust on toolchain 1.60.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/weiyinfu/learnRust [INFO] finished tweaking git repo https://github.com/weiyinfu/learnRust [INFO] tweaked toml for git repo https://github.com/weiyinfu/learnRust written to /workspace/builds/worker-25/source/Cargo.toml [INFO] crate git repo https://github.com/weiyinfu/learnRust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded pin-project-lite v0.1.4 [INFO] [stderr] Downloaded syn v1.0.18 [INFO] [stderr] Downloaded h2 v0.2.4 [INFO] [stderr] Downloaded hermit-abi v0.1.10 [INFO] [stderr] Downloaded pin-project-internal v0.4.9 [INFO] [stderr] Downloaded pin-project v0.4.9 [INFO] [stderr] Downloaded chrono v0.4.11 [INFO] [stderr] Downloaded num-integer v0.1.42 [INFO] [stderr] Downloaded proc-macro2 v1.0.12 [INFO] [stderr] Downloaded serde_derive v1.0.106 [INFO] [stderr] Downloaded futures-sink v0.3.4 [INFO] [stderr] Downloaded num-traits v0.2.11 [INFO] [stderr] Downloaded bytes v0.5.4 [INFO] [stderr] Downloaded serde_json v1.0.52 [INFO] [stderr] Downloaded ryu v1.0.4 [INFO] [stderr] Downloaded backtrace v0.3.46 [INFO] [stderr] Downloaded smallvec v0.4.5 [INFO] [stderr] Downloaded futures-channel v0.3.4 [INFO] [stderr] Downloaded futures-core v0.3.4 [INFO] [stderr] Downloaded futures-util v0.3.4 [INFO] [stderr] Downloaded quote v1.0.4 [INFO] [stderr] Downloaded futures-task v0.3.4 [INFO] [stderr] Downloaded serde v1.0.106 [INFO] [stderr] Downloaded tokio v0.2.20 [INFO] [stderr] Downloaded backtrace-sys v0.1.35 [INFO] [stderr] Downloaded ferris-says v0.1.2 [INFO] [stderr] Downloaded hyper v0.13.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6cc6a231fce59e22b9c2fb338ec36c32aa2773cad51e621eb06d4f7d86e38330 [INFO] running `Command { std: "docker" "start" "-a" "6cc6a231fce59e22b9c2fb338ec36c32aa2773cad51e621eb06d4f7d86e38330", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6cc6a231fce59e22b9c2fb338ec36c32aa2773cad51e621eb06d4f7d86e38330", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6cc6a231fce59e22b9c2fb338ec36c32aa2773cad51e621eb06d4f7d86e38330", kill_on_drop: false }` [INFO] [stdout] 6cc6a231fce59e22b9c2fb338ec36c32aa2773cad51e621eb06d4f7d86e38330 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] af46c80ba6c43570b3083d58c4874d6909a5c6ab00b7c8605c07fe0c92c22ba1 [INFO] running `Command { std: "docker" "start" "-a" "af46c80ba6c43570b3083d58c4874d6909a5c6ab00b7c8605c07fe0c92c22ba1", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.69 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling syn v1.0.18 [INFO] [stderr] Compiling futures-core v0.3.4 [INFO] [stderr] Compiling bytes v0.5.4 [INFO] [stderr] Compiling itoa v0.4.5 [INFO] [stderr] Compiling pin-project-lite v0.1.4 [INFO] [stderr] Compiling futures-task v0.3.4 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Compiling futures-sink v0.3.4 [INFO] [stderr] Compiling ryu v1.0.4 [INFO] [stderr] Compiling serde v1.0.106 [INFO] [stderr] Compiling try-lock v0.2.2 [INFO] [stderr] Compiling vec_map v0.8.1 [INFO] [stderr] Compiling tower-service v0.3.0 [INFO] [stderr] Compiling smallvec v0.4.5 [INFO] [stderr] Compiling futures-channel v0.3.4 [INFO] [stderr] Compiling futures-util v0.3.4 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling indexmap v1.3.2 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling want v0.3.0 [INFO] [stderr] Compiling http v0.2.1 [INFO] [stderr] Compiling backtrace-sys v0.1.35 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.34 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling time v0.1.43 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling mio v0.6.22 [INFO] [stderr] Compiling http-body v0.3.1 [INFO] [stderr] Compiling chrono v0.4.11 [INFO] [stderr] Compiling rand v0.3.23 [INFO] [stderr] Compiling tokio v0.2.20 [INFO] [stderr] Compiling backtrace v0.3.46 [INFO] [stderr] Compiling error-chain v0.10.0 [INFO] [stderr] Compiling serde_json v1.0.52 [INFO] [stderr] Compiling ferris-says v0.1.2 [INFO] [stderr] Compiling tokio-util v0.3.1 [INFO] [stderr] Compiling h2 v0.2.4 [INFO] [stderr] Compiling pin-project-internal v0.4.9 [INFO] [stderr] Compiling serde_derive v1.0.106 [INFO] [stderr] Compiling pin-project v0.4.9 [INFO] [stderr] Compiling hyper v0.13.5 [INFO] [stderr] Compiling learnRust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function is never used: `b` [INFO] [stdout] --> src/cnTest.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn b() {} [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `haha` [INFO] [stdout] --> src/useFolder/mod.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn haha() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `haha` [INFO] [stdout] --> src/useFolder/one.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn haha() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::DerefMut` [INFO] [stdout] --> src/bin/03-链表小练习-实现move_next.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::ops::DerefMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `core::fmt` [INFO] [stdout] --> src/bin/40-手势密码的种数.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use core::fmt; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `serde::export::Formatter` [INFO] [stdout] --> src/bin/40-手势密码的种数.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use serde::export::Formatter; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `name` [INFO] [stdout] --> src/bin/03-使用元组实现泛型链表.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | name: String, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `Student` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/bin/03-使用元组实现泛型链表.rs:60:14 [INFO] [stdout] | [INFO] [stdout] 60 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `age` [INFO] [stdout] --> src/bin/03-使用元组实现泛型链表.rs:63:9 [INFO] [stdout] | [INFO] [stdout] 63 | age: i32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Student` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/bin/03-使用元组实现泛型链表.rs:60:14 [INFO] [stdout] | [INFO] [stdout] 60 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/40-手势密码的种数.rs:134:17 [INFO] [stdout] | [INFO] [stdout] 134 | let mut c = get_patterns(&mut dp, j, i).clone().to_vec(); [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[E0594]: cannot assign to `a[_][_]`, as `Fn` closures cannot mutate their captured variables [INFO] [stdout] --> src/bin/13-闭包递归八皇后.rs:56:17 [INFO] [stdout] | [INFO] [stdout] 56 | a[x][y] = 1; [INFO] [stdout] | ^^^^^^^^^^^ cannot assign [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0594]: cannot assign to `a[_][_]`, as `Fn` closures cannot mutate their captured variables [INFO] [stdout] --> src/bin/13-闭包递归八皇后.rs:58:17 [INFO] [stdout] | [INFO] [stdout] 58 | a[x][y] = 0; [INFO] [stdout] | ^^^^^^^^^^^ cannot assign [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `a` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/bin/13-闭包递归八皇后.rs:46:14 [INFO] [stdout] | [INFO] [stdout] 12 | let canput = |x: &usize, y: &usize| { [INFO] [stdout] | ---------------------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 21 | if a[xx as usize][yy as usize] != 0 { [INFO] [stdout] | - first borrow occurs due to use of `a` in closure [INFO] [stdout] ... [INFO] [stdout] 46 | go: &|g, x, y| { [INFO] [stdout] | ^^^^^^^^^ mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 55 | if canput(&x, &y) { [INFO] [stdout] | ------ immutable borrow later captured here by closure [INFO] [stdout] 56 | a[x][y] = 1; [INFO] [stdout] | - second borrow occurs due to use of `a` in closure [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0502, E0594. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0502`. [INFO] [stdout] [INFO] [stdout] warning: variable `queenCount` should have a snake case name [INFO] [stdout] --> src/bin/14-基于面向对象的八皇后.rs:55:42 [INFO] [stdout] | [INFO] [stdout] 55 | fn go(&mut self, x: usize, y: usize, queenCount: i32) { [INFO] [stdout] | ^^^^^^^^^^ help: convert the identifier to snake case: `queen_count` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `learnRust` due to 4 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "af46c80ba6c43570b3083d58c4874d6909a5c6ab00b7c8605c07fe0c92c22ba1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "af46c80ba6c43570b3083d58c4874d6909a5c6ab00b7c8605c07fe0c92c22ba1", kill_on_drop: false }` [INFO] [stdout] af46c80ba6c43570b3083d58c4874d6909a5c6ab00b7c8605c07fe0c92c22ba1