[INFO] cloning repository https://github.com/Cupnfish/my-leetcode-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Cupnfish/my-leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCupnfish%2Fmy-leetcode-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCupnfish%2Fmy-leetcode-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 32002f7714d5be3b547d0280955407e3f02fc1f1 [INFO] checking Cupnfish/my-leetcode-rust against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCupnfish%2Fmy-leetcode-rust" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Cupnfish/my-leetcode-rust on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Cupnfish/my-leetcode-rust [INFO] finished tweaking git repo https://github.com/Cupnfish/my-leetcode-rust [INFO] tweaked toml for git repo https://github.com/Cupnfish/my-leetcode-rust written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/Cupnfish/my-leetcode-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 7a62e15e95ee37e0ae9760cad40ee7edca30fc578afe2ee17ec3775820ad041c [INFO] running `Command { std: "docker" "start" "-a" "7a62e15e95ee37e0ae9760cad40ee7edca30fc578afe2ee17ec3775820ad041c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7a62e15e95ee37e0ae9760cad40ee7edca30fc578afe2ee17ec3775820ad041c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7a62e15e95ee37e0ae9760cad40ee7edca30fc578afe2ee17ec3775820ad041c", kill_on_drop: false }` [INFO] [stdout] 7a62e15e95ee37e0ae9760cad40ee7edca30fc578afe2ee17ec3775820ad041c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e43e99ae1a2b38f5d613bd61832521c5997171530af5bc46d9d0dfed42017a1f [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" "e43e99ae1a2b38f5d613bd61832521c5997171530af5bc46d9d0dfed42017a1f", kill_on_drop: false }` [INFO] [stderr] Checking leetcode-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::iter::Zip` [INFO] [stdout] --> src/random/day2.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | use std::iter::Zip; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `hash` [INFO] [stdout] --> src/random/day3.rs:2:52 [INFO] [stdout] | [INFO] [stdout] 2 | use std::{cell::RefCell, collections::HashMap, hash, rc::Rc}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::iter::Zip` [INFO] [stdout] --> src/random/day2.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | use std::iter::Zip; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `hash` [INFO] [stdout] --> src/random/day3.rs:2:52 [INFO] [stdout] | [INFO] [stdout] 2 | use std::{cell::RefCell, collections::HashMap, hash, rc::Rc}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature 'map_first_last' [INFO] [stdout] --> src/random/day3.rs:103:41 [INFO] [stdout] | [INFO] [stdout] 103 | if let Some(mut entry) = counts.first_entry() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62924 for more information [INFO] [stdout] = help: add `#![feature(map_first_last)]` to the crate attributes to enable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature 'map_first_last' [INFO] [stdout] --> src/random/day3.rs:103:41 [INFO] [stdout] | [INFO] [stdout] 103 | if let Some(mut entry) = counts.first_entry() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #62924 for more information [INFO] [stdout] = help: add `#![feature(map_first_last)]` to the crate attributes to enable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0658`. [INFO] [stdout] [INFO] [stderr] error: could not compile `leetcode-rust` [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] error: aborting due to previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0658`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "e43e99ae1a2b38f5d613bd61832521c5997171530af5bc46d9d0dfed42017a1f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e43e99ae1a2b38f5d613bd61832521c5997171530af5bc46d9d0dfed42017a1f", kill_on_drop: false }` [INFO] [stdout] e43e99ae1a2b38f5d613bd61832521c5997171530af5bc46d9d0dfed42017a1f