[INFO] cloning repository garyemerson/angry_children_2
[INFO] running `"git" "clone" "--bare" "git://github.com/garyemerson/angry_children_2.git" "work/cache/sources/gh/garyemerson/angry_children_2"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/garyemerson/angry_children_2'...
[INFO] running `"git" "clone" "work/cache/sources/gh/garyemerson/angry_children_2" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/garyemerson/angry_children_2"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/garyemerson/angry_children_2'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/garyemerson/angry_children_2" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/garyemerson/angry_children_2"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/garyemerson/angry_children_2'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cc804dba709405b1fecc8e1b220d1603e5812df9
[INFO] sha for GitHub repo garyemerson/angry_children_2: cc804dba709405b1fecc8e1b220d1603e5812df9
[INFO] validating manifest of garyemerson/angry_children_2 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of garyemerson/angry_children_2 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing garyemerson/angry_children_2
[INFO] finished frobbing garyemerson/angry_children_2
[INFO] frobbed toml for garyemerson/angry_children_2 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/garyemerson/angry_children_2/Cargo.toml
[INFO] started frobbing garyemerson/angry_children_2
[INFO] finished frobbing garyemerson/angry_children_2
[INFO] frobbed toml for garyemerson/angry_children_2 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/garyemerson/angry_children_2/Cargo.toml
[INFO] crate garyemerson/angry_children_2 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking garyemerson/angry_children_2 against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-0/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/garyemerson/angry_children_2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 26288bad26f395c5e6a721025d2c3876478dd2cc4dc8cd9a53892cda004e4900
[INFO] running `"docker" "start" "-a" "26288bad26f395c5e6a721025d2c3876478dd2cc4dc8cd9a53892cda004e4900"`
[INFO] [stderr]     Checking angry_children_2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/main.rs:34:35
[INFO] [stderr]    |
[INFO] [stderr] 34 |             - log("old part    ", (sum(&sums, start, start + k - 2) - ((k - 1) as i64) * packets[start - 1]));
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]   --> src/main.rs:52:28
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn log<T: std::fmt::Debug>(msg: &str, val: T) -> T {
[INFO] [stderr]    |                            ^^^ help: consider prefixing with an underscore: `_msg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_unfair_slow`
[INFO] [stderr]   --> src/main.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn get_unfair_slow(packets: &Vec<i64>, start: usize, end: usize) -> i64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/main.rs:34:35
[INFO] [stderr]    |
[INFO] [stderr] 34 |             - log("old part    ", (sum(&sums, start, start + k - 2) - ((k - 1) as i64) * packets[start - 1]));
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]   --> src/main.rs:52:28
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn log<T: std::fmt::Debug>(msg: &str, val: T) -> T {
[INFO] [stderr]    |                            ^^^ help: consider prefixing with an underscore: `_msg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_unfair_slow`
[INFO] [stderr]   --> src/main.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn get_unfair_slow(packets: &Vec<i64>, start: usize, end: usize) -> i64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "26288bad26f395c5e6a721025d2c3876478dd2cc4dc8cd9a53892cda004e4900"`
[INFO] running `"docker" "rm" "-f" "26288bad26f395c5e6a721025d2c3876478dd2cc4dc8cd9a53892cda004e4900"`
[INFO] [stdout] 26288bad26f395c5e6a721025d2c3876478dd2cc4dc8cd9a53892cda004e4900