[INFO] cloning repository https://github.com/AlexanderChen1989/algorithm_and_languages [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlexanderChen1989/algorithm_and_languages" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderChen1989%2Falgorithm_and_languages", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderChen1989%2Falgorithm_and_languages'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d910507beb4e836987795655925d8d84fce49dfa [INFO] testing AlexanderChen1989/algorithm_and_languages against beta-2022-04-10 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderChen1989%2Falgorithm_and_languages" "/workspace/builds/worker-105/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-105/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/AlexanderChen1989/algorithm_and_languages on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/AlexanderChen1989/algorithm_and_languages [INFO] finished tweaking git repo https://github.com/AlexanderChen1989/algorithm_and_languages [INFO] tweaked toml for git repo https://github.com/AlexanderChen1989/algorithm_and_languages written to /workspace/builds/worker-105/source/Cargo.toml [INFO] crate git repo https://github.com/AlexanderChen1989/algorithm_and_languages already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ade512b0c9143e90b71034a46665a3147bb3a18246e90487323d74d7bbe1c8c1 [INFO] running `Command { std: "docker" "start" "-a" "ade512b0c9143e90b71034a46665a3147bb3a18246e90487323d74d7bbe1c8c1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ade512b0c9143e90b71034a46665a3147bb3a18246e90487323d74d7bbe1c8c1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ade512b0c9143e90b71034a46665a3147bb3a18246e90487323d74d7bbe1c8c1", kill_on_drop: false }` [INFO] [stdout] ade512b0c9143e90b71034a46665a3147bb3a18246e90487323d74d7bbe1c8c1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] da7982e7e969a922857e62dfbde4c394d093beeafe35d24020d3410561ceb0e7 [INFO] running `Command { std: "docker" "start" "-a" "da7982e7e969a922857e62dfbde4c394d093beeafe35d24020d3410561ceb0e7", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling nice v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/bin/76.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `HashMap` is imported redundantly [INFO] [stdout] --> src/bin/76.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::HashMap; [INFO] [stdout] | ------------------------- the item `HashMap` is already imported here [INFO] [stdout] ... [INFO] [stdout] 18 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ref_h` [INFO] [stdout] --> src/bin/borrow_borrow_mut.rs:5:6 [INFO] [stdout] | [INFO] [stdout] 5 | let ref_h = h.borrow(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_ref_h` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `print_i32` [INFO] [stdout] --> src/bin/asref_asmut.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn print_i32(s: impl AsRef) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `val` [INFO] [stdout] --> src/bin/borrow_borrow_mut.rs:10:2 [INFO] [stdout] | [INFO] [stdout] 10 | val: i32 [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/bin/239.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(let_chains)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/bin/2.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(let_chains)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0601]: `main` function not found in crate `206` [INFO] [stdout] --> src/bin/206.rs:29:2 [INFO] [stdout] | [INFO] [stdout] 29 | } [INFO] [stdout] | ^ consider adding a `main` function to `src/bin/206.rs` [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 E0554`. [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `nice` due to 2 previous errors [INFO] [stdout] For more information about this error, try `rustc --explain E0601`. [INFO] [stdout] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/bin/92.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 38 | fn new(val: i32) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `take` [INFO] [stdout] --> src/bin/92.rs:80:4 [INFO] [stdout] | [INFO] [stdout] 80 | fn take(p: &mut Option>) -> (Option>, Option>) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `nice` due to 2 previous errors [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `nice` due to 2 previous errors [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "da7982e7e969a922857e62dfbde4c394d093beeafe35d24020d3410561ceb0e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "da7982e7e969a922857e62dfbde4c394d093beeafe35d24020d3410561ceb0e7", kill_on_drop: false }` [INFO] [stdout] da7982e7e969a922857e62dfbde4c394d093beeafe35d24020d3410561ceb0e7