[INFO] updating cached repository robertmaloney/advent2017
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/robertmaloney/advent2017
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/robertmaloney/advent2017" "work/ex/beta-1.37-6/sources/1.36.0/gh/robertmaloney/advent2017"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/robertmaloney/advent2017'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/robertmaloney/advent2017" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/robertmaloney/advent2017"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/robertmaloney/advent2017'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 180761b70ebc080de44760d929554b0056d36220
[INFO] sha for GitHub repo robertmaloney/advent2017: 180761b70ebc080de44760d929554b0056d36220
[INFO] validating manifest of robertmaloney/advent2017 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 robertmaloney/advent2017 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 robertmaloney/advent2017
[INFO] finished frobbing robertmaloney/advent2017
[INFO] frobbed toml for robertmaloney/advent2017 written to work/ex/beta-1.37-6/sources/1.36.0/gh/robertmaloney/advent2017/Cargo.toml
[INFO] started frobbing robertmaloney/advent2017
[INFO] finished frobbing robertmaloney/advent2017
[INFO] frobbed toml for robertmaloney/advent2017 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/robertmaloney/advent2017/Cargo.toml
[INFO] crate robertmaloney/advent2017 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing robertmaloney/advent2017 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-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/robertmaloney/advent2017:/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] 1685e7e90a327f8033e0a124a94877e39d3c47314fcfef19ba3a9198e6f01183
[INFO] running `"docker" "start" "-a" "1685e7e90a327f8033e0a124a94877e39d3c47314fcfef19ba3a9198e6f01183"`
[INFO] [stderr]    Compiling advent2017 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `max_min_difference`
[INFO] [stderr]  --> src/day_two/mod.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn max_min_difference<T: Iterator<Item=u32>>(iter: T) -> u32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `value`
[INFO] [stderr]  --> src/day_three/mod.rs:6:3
[INFO] [stderr]   |
[INFO] [stderr] 6 |   value: i32,
[INFO] [stderr]   |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/util/mod.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 |   reader.read_to_string(&mut buffer);
[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 1.38s
[INFO] running `"docker" "inspect" "1685e7e90a327f8033e0a124a94877e39d3c47314fcfef19ba3a9198e6f01183"`
[INFO] running `"docker" "rm" "-f" "1685e7e90a327f8033e0a124a94877e39d3c47314fcfef19ba3a9198e6f01183"`
[INFO] [stdout] 1685e7e90a327f8033e0a124a94877e39d3c47314fcfef19ba3a9198e6f01183
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/robertmaloney/advent2017:/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] 9fe4972b6285cc3418aa3924f47131cd6226a0fc9fcb085a04482832c78d8cdc
[INFO] running `"docker" "start" "-a" "9fe4972b6285cc3418aa3924f47131cd6226a0fc9fcb085a04482832c78d8cdc"`
[INFO] [stderr]    Compiling advent2017 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `max_min_difference`
[INFO] [stderr]  --> src/day_two/mod.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn max_min_difference<T: Iterator<Item=u32>>(iter: T) -> u32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `value`
[INFO] [stderr]  --> src/day_three/mod.rs:6:3
[INFO] [stderr]   |
[INFO] [stderr] 6 |   value: i32,
[INFO] [stderr]   |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/util/mod.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 |   reader.read_to_string(&mut buffer);
[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 0.78s
[INFO] running `"docker" "inspect" "9fe4972b6285cc3418aa3924f47131cd6226a0fc9fcb085a04482832c78d8cdc"`
[INFO] running `"docker" "rm" "-f" "9fe4972b6285cc3418aa3924f47131cd6226a0fc9fcb085a04482832c78d8cdc"`
[INFO] [stdout] 9fe4972b6285cc3418aa3924f47131cd6226a0fc9fcb085a04482832c78d8cdc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/robertmaloney/advent2017:/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] 401d07c4bb81c09c00c65f94d66ed1c694fd6df7807df91efb578dee62ccfe69
[INFO] running `"docker" "start" "-a" "401d07c4bb81c09c00c65f94d66ed1c694fd6df7807df91efb578dee62ccfe69"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/advent2017-f3d124c7f0ea8d68
[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" "401d07c4bb81c09c00c65f94d66ed1c694fd6df7807df91efb578dee62ccfe69"`
[INFO] running `"docker" "rm" "-f" "401d07c4bb81c09c00c65f94d66ed1c694fd6df7807df91efb578dee62ccfe69"`
[INFO] [stdout] 401d07c4bb81c09c00c65f94d66ed1c694fd6df7807df91efb578dee62ccfe69