[INFO] cloning repository https://github.com/qinxiaoguang/rs-lc
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qinxiaoguang/rs-lc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqinxiaoguang%2Frs-lc"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqinxiaoguang%2Frs-lc'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e68a189fa909c2eaa88ab0235f2f824abbd531a0
[INFO] checking qinxiaoguang/rs-lc against try#13f916f63bc6575d5ff1f989237dfabe88981368 for pr-69880
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqinxiaoguang%2Frs-lc" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/qinxiaoguang/rs-lc on toolchain 13f916f63bc6575d5ff1f989237dfabe88981368
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/qinxiaoguang/rs-lc
[INFO] finished tweaking git repo https://github.com/qinxiaoguang/rs-lc
[INFO] tweaked toml for git repo https://github.com/qinxiaoguang/rs-lc written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/qinxiaoguang/rs-lc already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f84f2045b2ddb39f3c5f11a09ca71b03624520952aa7e11482f21b4da2fd82e9
[INFO] running `"docker" "start" "-a" "f84f2045b2ddb39f3c5f11a09ca71b03624520952aa7e11482f21b4da2fd82e9"`
[INFO] [stderr]     Checking rs-lc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `HashSet`
[INFO] [stderr]  --> src/solution/l049.rs:2:33
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                                 ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/solution/l049.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / macro_rules! set {
[INFO] [stderr] 25 | |     ($($k:expr),*) => {
[INFO] [stderr] 26 | |         {
[INFO] [stderr] 27 | |             let mut set = HashSet::new();
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |     };
[INFO] [stderr] 34 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `solution::l002::Solution`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use solution::l002::Solution;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashSet`
[INFO] [stderr]  --> src/solution/l049.rs:2:33
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                                 ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]  --> src/solution/l049.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / macro_rules! sf {
[INFO] [stderr] 5 | |     ($str:expr) => {
[INFO] [stderr] 6 | |         String::from($str)
[INFO] [stderr] 7 | |     };
[INFO] [stderr] 8 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/solution/l049.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / macro_rules! set {
[INFO] [stderr] 25 | |     ($($k:expr),*) => {
[INFO] [stderr] 26 | |         {
[INFO] [stderr] 27 | |             let mut set = HashSet::new();
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |     };
[INFO] [stderr] 34 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `solution::l002::Solution`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use solution::l002::Solution;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/solution/l049.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |             let mut map = HashMap::new();
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         let mut m = map![];
[INFO] [stderr]    |                     ------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/solution/l049.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |             let mut map = HashMap::new();
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         let mut m = map![];
[INFO] [stderr]    |                     ------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/solution/l049.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Solution {}
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `group_anagrams`
[INFO] [stderr]   --> src/solution/l049.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn group_anagrams(strs: Vec<String>) -> Vec<Vec<String>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `"docker" "inspect" "f84f2045b2ddb39f3c5f11a09ca71b03624520952aa7e11482f21b4da2fd82e9"`
[INFO] running `"docker" "rm" "-f" "f84f2045b2ddb39f3c5f11a09ca71b03624520952aa7e11482f21b4da2fd82e9"`
[INFO] [stdout] f84f2045b2ddb39f3c5f11a09ca71b03624520952aa7e11482f21b4da2fd82e9