[INFO] updating cached repository cholcombe973/memory_monitor
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cholcombe973/memory_monitor
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cholcombe973/memory_monitor" "work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/gh/cholcombe973/memory_monitor"`
[INFO] [stderr] Cloning into 'work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/gh/cholcombe973/memory_monitor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cholcombe973/memory_monitor" "work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/cholcombe973/memory_monitor"`
[INFO] [stderr] Cloning into 'work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/cholcombe973/memory_monitor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d8ab76e99a4df363cbbb0e1b844420d1a1270557
[INFO] sha for GitHub repo cholcombe973/memory_monitor: d8ab76e99a4df363cbbb0e1b844420d1a1270557
[INFO] validating manifest of cholcombe973/memory_monitor on toolchain master#6ecad338381cc3b8d56e2df22e5971a598eddd6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ecad338381cc3b8d56e2df22e5971a598eddd6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cholcombe973/memory_monitor on toolchain try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cholcombe973/memory_monitor
[INFO] finished frobbing cholcombe973/memory_monitor
[INFO] frobbed toml for cholcombe973/memory_monitor written to work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/gh/cholcombe973/memory_monitor/Cargo.toml
[INFO] started frobbing cholcombe973/memory_monitor
[INFO] finished frobbing cholcombe973/memory_monitor
[INFO] frobbed toml for cholcombe973/memory_monitor written to work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/cholcombe973/memory_monitor/Cargo.toml
[INFO] crate cholcombe973/memory_monitor has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ecad338381cc3b8d56e2df22e5971a598eddd6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cholcombe973/memory_monitor against try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f for pr-57501
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57501/worker-3/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/cholcombe973/memory_monitor:/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" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 03b3b12697821716515b9c2127135a070a77401e9c141001f4b04c462d9aa680
[INFO] running `"docker" "start" "-a" "03b3b12697821716515b9c2127135a070a77401e9c141001f4b04c462d9aa680"`
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking humannum v0.1.0
[INFO] [stderr]     Checking simplelog v0.4.2
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]     Checking process_utils v0.1.0
[INFO] [stderr]     Checking memory_monitor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 | /     kill_and_restart(
[INFO] [stderr] 86 | |         pid_info,
[INFO] [stderr] 87 | |         memory_byte_limit,
[INFO] [stderr] 88 | |         matches.is_present("parent"),
[INFO] [stderr] 89 | |         matches.is_present("test"),
[INFO] [stderr] 90 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 | /     kill_and_restart(
[INFO] [stderr] 86 | |         pid_info,
[INFO] [stderr] 87 | |         memory_byte_limit,
[INFO] [stderr] 88 | |         matches.is_present("parent"),
[INFO] [stderr] 89 | |         matches.is_present("test"),
[INFO] [stderr] 90 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.87s
[INFO] running `"docker" "inspect" "03b3b12697821716515b9c2127135a070a77401e9c141001f4b04c462d9aa680"`
[INFO] running `"docker" "rm" "-f" "03b3b12697821716515b9c2127135a070a77401e9c141001f4b04c462d9aa680"`
[INFO] [stdout] 03b3b12697821716515b9c2127135a070a77401e9c141001f4b04c462d9aa680