[INFO] updating cached repository https://github.com/weiyinfu/learnRust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }` [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8b92f974f76c58bb7409cbe26d320d3d66d04aef [INFO] testing weiyinfu/learnRust against beta-2020-07-24 for beta-1.46-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweiyinfu%2FlearnRust" "/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/weiyinfu/learnRust on toolchain beta-2020-07-24 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/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" "+beta-2020-07-24" "fetch" "--locked" "--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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4667862ebe0466c7c73c709281f9e55cb52c35ba3f7c74cd0adf39439cf8dd40 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "4667862ebe0466c7c73c709281f9e55cb52c35ba3f7c74cd0adf39439cf8dd40", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4667862ebe0466c7c73c709281f9e55cb52c35ba3f7c74cd0adf39439cf8dd40", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4667862ebe0466c7c73c709281f9e55cb52c35ba3f7c74cd0adf39439cf8dd40", kill_on_drop: false }` [INFO] [stdout] 4667862ebe0466c7c73c709281f9e55cb52c35ba3f7c74cd0adf39439cf8dd40 [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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 02430414e54003f37ce8bdb48df9b7a19361b422f6bd865406d1f92467590932 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "02430414e54003f37ce8bdb48df9b7a19361b422f6bd865406d1f92467590932", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.18 [INFO] [stderr] Compiling futures-task v0.3.4 [INFO] [stderr] Compiling serde v1.0.106 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling error-chain v0.10.0 [INFO] [stderr] Compiling tokio v0.2.20 [INFO] [stderr] Compiling futures-util v0.3.4 [INFO] [stderr] Compiling ferris-says v0.1.2 [INFO] [stderr] Compiling rand v0.3.23 [INFO] [stderr] Compiling tokio-util v0.3.1 [INFO] [stderr] Compiling h2 v0.2.4 [INFO] [stderr] Compiling serde_json v1.0.52 [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/one.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn haha() { [INFO] [stdout] | ^^^^ [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: 3 warnings emitted [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: 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] 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] [stderr] error: could not compile `learnRust`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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] [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] warning: 1 warning 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" "02430414e54003f37ce8bdb48df9b7a19361b422f6bd865406d1f92467590932", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "02430414e54003f37ce8bdb48df9b7a19361b422f6bd865406d1f92467590932", kill_on_drop: false }` [INFO] [stdout] 02430414e54003f37ce8bdb48df9b7a19361b422f6bd865406d1f92467590932