[INFO] updating cached repository laxect/codeforces
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/laxect/codeforces
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/laxect/codeforces" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/laxect/codeforces"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/laxect/codeforces'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/laxect/codeforces" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/laxect/codeforces"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/laxect/codeforces'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c9aad55956ad3ec5621c9be65f7779131b9db53
[INFO] sha for GitHub repo laxect/codeforces: 7c9aad55956ad3ec5621c9be65f7779131b9db53
[INFO] validating manifest of laxect/codeforces on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of laxect/codeforces on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing laxect/codeforces
[INFO] finished frobbing laxect/codeforces
[INFO] frobbed toml for laxect/codeforces written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/laxect/codeforces/Cargo.toml
[INFO] started frobbing laxect/codeforces
[INFO] finished frobbing laxect/codeforces
[INFO] frobbed toml for laxect/codeforces written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/laxect/codeforces/Cargo.toml
[INFO] crate laxect/codeforces already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking laxect/codeforces against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-4/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/laxect/codeforces:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 49bfa33dc8cc36d7d642cf57fc4bac0609c0cc0b3211886262f7a26a9373b67c
[INFO] running `"docker" "start" "-a" "49bfa33dc8cc36d7d642cf57fc4bac0609c0cc0b3211886262f7a26a9373b67c"`
[INFO] [stderr]     Checking codeforces v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]  --> src/c552d3/c.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn solve(f: i32, r: i32, c: i32) -> i32 {
[INFO] [stderr]   |          ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]  --> src/c552d3/c.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn solve(f: i32, r: i32, c: i32) -> i32 {
[INFO] [stderr]   |                  ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]  --> src/c552d3/c.rs:1:26
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn solve(f: i32, r: i32, c: i32) -> i32 {
[INFO] [stderr]   |                          ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/c552d3/a.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn main() {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/c552d3/c.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn solve(f: i32, r: i32, c: i32) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/c552d3/c.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn main() {
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]  --> src/c552d3/c.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn solve(f: i32, r: i32, c: i32) -> i32 {
[INFO] [stderr]   |          ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]  --> src/c552d3/c.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn solve(f: i32, r: i32, c: i32) -> i32 {
[INFO] [stderr]   |                  ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]  --> src/c552d3/c.rs:1:26
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn solve(f: i32, r: i32, c: i32) -> i32 {
[INFO] [stderr]   |                          ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/c552d3/a.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn main() {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/c552d3/c.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn solve(f: i32, r: i32, c: i32) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/c552d3/c.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn main() {
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "49bfa33dc8cc36d7d642cf57fc4bac0609c0cc0b3211886262f7a26a9373b67c"`
[INFO] running `"docker" "rm" "-f" "49bfa33dc8cc36d7d642cf57fc4bac0609c0cc0b3211886262f7a26a9373b67c"`
[INFO] [stdout] 49bfa33dc8cc36d7d642cf57fc4bac0609c0cc0b3211886262f7a26a9373b67c