[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/beta-1.37-6/sources/1.36.0/gh/cholcombe973/memory_monitor"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/cholcombe973/memory_monitor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cholcombe973/memory_monitor" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/cholcombe973/memory_monitor"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cholcombe973/memory_monitor on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/gh/cholcombe973/memory_monitor/Cargo.toml
[INFO] crate cholcombe973/memory_monitor already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing cholcombe973/memory_monitor against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] ff4e09b4c188b0a07b6f2abc252fddddf539f3c3ba6241884e0895845a00ed33
[INFO] running `"docker" "start" "-a" "ff4e09b4c188b0a07b6f2abc252fddddf539f3c3ba6241884e0895845a00ed33"`
[INFO] [stderr]    Compiling nom v2.2.1
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.1
[INFO] [stderr]    Compiling humannum v0.1.0
[INFO] [stderr]    Compiling simplelog v0.4.2
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]    Compiling process_utils v0.1.0
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 30.46s
[INFO] running `"docker" "inspect" "ff4e09b4c188b0a07b6f2abc252fddddf539f3c3ba6241884e0895845a00ed33"`
[INFO] running `"docker" "rm" "-f" "ff4e09b4c188b0a07b6f2abc252fddddf539f3c3ba6241884e0895845a00ed33"`
[INFO] [stdout] ff4e09b4c188b0a07b6f2abc252fddddf539f3c3ba6241884e0895845a00ed33
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 09b66ad48f54d69312dd21bde9c1c37ee96b3e96913edebc6062ee65ebfb7fcb
[INFO] running `"docker" "start" "-a" "09b66ad48f54d69312dd21bde9c1c37ee96b3e96913edebc6062ee65ebfb7fcb"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "09b66ad48f54d69312dd21bde9c1c37ee96b3e96913edebc6062ee65ebfb7fcb"`
[INFO] running `"docker" "rm" "-f" "09b66ad48f54d69312dd21bde9c1c37ee96b3e96913edebc6062ee65ebfb7fcb"`
[INFO] [stdout] 09b66ad48f54d69312dd21bde9c1c37ee96b3e96913edebc6062ee65ebfb7fcb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 415d13047b18e09b49360626b30c942340347e2563db0fb08248ddc843eb160f
[INFO] running `"docker" "start" "-a" "415d13047b18e09b49360626b30c942340347e2563db0fb08248ddc843eb160f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/memory_monitor-28f1220f558aeab3
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "415d13047b18e09b49360626b30c942340347e2563db0fb08248ddc843eb160f"`
[INFO] running `"docker" "rm" "-f" "415d13047b18e09b49360626b30c942340347e2563db0fb08248ddc843eb160f"`
[INFO] [stdout] 415d13047b18e09b49360626b30c942340347e2563db0fb08248ddc843eb160f