[INFO] crate mzandvliets_hello_world_crate 0.1.2 is already in cache
[INFO] extracting crate mzandvliets_hello_world_crate 0.1.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/mzandvliets_hello_world_crate/0.1.2
[INFO] extracting crate mzandvliets_hello_world_crate 0.1.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mzandvliets_hello_world_crate/0.1.2
[INFO] validating manifest of mzandvliets_hello_world_crate-0.1.2 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 mzandvliets_hello_world_crate-0.1.2 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 mzandvliets_hello_world_crate-0.1.2
[INFO] finished frobbing mzandvliets_hello_world_crate-0.1.2
[INFO] frobbed toml for mzandvliets_hello_world_crate-0.1.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/mzandvliets_hello_world_crate/0.1.2/Cargo.toml
[INFO] started frobbing mzandvliets_hello_world_crate-0.1.2
[INFO] finished frobbing mzandvliets_hello_world_crate-0.1.2
[INFO] frobbed toml for mzandvliets_hello_world_crate-0.1.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mzandvliets_hello_world_crate/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 mzandvliets_hello_world_crate-0.1.2 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mzandvliets_hello_world_crate/0.1.2:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 231c6adc467b6ab0da2436e675ec7c4f88a455fe19e62fb0b782937f1497abd2
[INFO] running `"docker" "start" "-a" "231c6adc467b6ab0da2436e675ec7c4f88a455fe19e62fb0b782937f1497abd2"`
[INFO] [stderr]    Compiling mzandvliets_hello_world_crate v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `c1`
[INFO] [stderr]   --> src/lib.rs:52:16
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                ^^ help: consider prefixing with an underscore: `_c1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c2`
[INFO] [stderr]   --> src/lib.rs:52:34
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                                  ^^ help: consider prefixing with an underscore: `_c2`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 0.56s
[INFO] running `"docker" "inspect" "231c6adc467b6ab0da2436e675ec7c4f88a455fe19e62fb0b782937f1497abd2"`
[INFO] running `"docker" "rm" "-f" "231c6adc467b6ab0da2436e675ec7c4f88a455fe19e62fb0b782937f1497abd2"`
[INFO] [stdout] 231c6adc467b6ab0da2436e675ec7c4f88a455fe19e62fb0b782937f1497abd2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mzandvliets_hello_world_crate/0.1.2:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 61b23b3146edc386a2c0eb376358102880b7ed28a32a1175e52bed782784c290
[INFO] running `"docker" "start" "-a" "61b23b3146edc386a2c0eb376358102880b7ed28a32a1175e52bed782784c290"`
[INFO] [stderr]    Compiling mzandvliets_hello_world_crate v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `c1`
[INFO] [stderr]   --> src/lib.rs:52:16
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                ^^ help: consider prefixing with an underscore: `_c1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c2`
[INFO] [stderr]   --> src/lib.rs:52:34
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                                  ^^ help: consider prefixing with an underscore: `_c2`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 0.51s
[INFO] running `"docker" "inspect" "61b23b3146edc386a2c0eb376358102880b7ed28a32a1175e52bed782784c290"`
[INFO] running `"docker" "rm" "-f" "61b23b3146edc386a2c0eb376358102880b7ed28a32a1175e52bed782784c290"`
[INFO] [stdout] 61b23b3146edc386a2c0eb376358102880b7ed28a32a1175e52bed782784c290
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mzandvliets_hello_world_crate/0.1.2:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] fcb730cdbdee54ea2104f604204e77bb7ce70d8c14525b3b574e7355ac36c33a
[INFO] running `"docker" "start" "-a" "fcb730cdbdee54ea2104f604204e77bb7ce70d8c14525b3b574e7355ac36c33a"`
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/my_library-a2d2b98ead31c472
[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] [stderr]      Running /opt/crater/target/debug/deps/mzandvliets_hello_world_crate-0c7d7669744da433
[INFO] [stderr]    Doc-tests my_library
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - add_one (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "fcb730cdbdee54ea2104f604204e77bb7ce70d8c14525b3b574e7355ac36c33a"`
[INFO] running `"docker" "rm" "-f" "fcb730cdbdee54ea2104f604204e77bb7ce70d8c14525b3b574e7355ac36c33a"`
[INFO] [stdout] fcb730cdbdee54ea2104f604204e77bb7ce70d8c14525b3b574e7355ac36c33a