[INFO] updating cached repository tbelaire/dailyprogrammer_challenge247_easy_secret_santa
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tbelaire/dailyprogrammer_challenge247_easy_secret_santa
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 711646bcb7d841928c02268d3ca07747db13c311
[INFO] sha for GitHub repo tbelaire/dailyprogrammer_challenge247_easy_secret_santa: 711646bcb7d841928c02268d3ca07747db13c311
[INFO] validating manifest of tbelaire/dailyprogrammer_challenge247_easy_secret_santa on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tbelaire/dailyprogrammer_challenge247_easy_secret_santa on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tbelaire/dailyprogrammer_challenge247_easy_secret_santa
[INFO] finished frobbing tbelaire/dailyprogrammer_challenge247_easy_secret_santa
[INFO] frobbed toml for tbelaire/dailyprogrammer_challenge247_easy_secret_santa written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa/Cargo.toml
[INFO] started frobbing tbelaire/dailyprogrammer_challenge247_easy_secret_santa
[INFO] finished frobbing tbelaire/dailyprogrammer_challenge247_easy_secret_santa
[INFO] frobbed toml for tbelaire/dailyprogrammer_challenge247_easy_secret_santa written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa/Cargo.toml
[INFO] crate tbelaire/dailyprogrammer_challenge247_easy_secret_santa has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing tbelaire/dailyprogrammer_challenge247_easy_secret_santa against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] fa19d9b1dce14efe9b25ee1fc4b6bc36c3de0d613f1592a1c3e8028b65dee340
[INFO] running `"docker" "start" "-a" "fa19d9b1dce14efe9b25ee1fc4b6bc36c3de0d613f1592a1c3e8028b65dee340"`
[INFO] [stderr]    Compiling challenge_247_easy_secret_santa v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | /     pub fn new<T>(people: Vec<T>) -> Self
[INFO] [stderr] 18 | |         where T: Into<String>
[INFO] [stderr] 19 | |     {
[INFO] [stderr] 20 | |         Family {
[INFO] [stderr] ...  |
[INFO] [stderr] 23 | |         }
[INFO] [stderr] 24 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new2`
[INFO] [stderr]   --> src/main.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     pub fn new2<V, T>(people: V) -> Self
[INFO] [stderr] 26 | |         where V: Into<Vec<T>>,
[INFO] [stderr] 27 | |               T: Into<String>
[INFO] [stderr] 28 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 32 | |         }
[INFO] [stderr] 33 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `"docker" "inspect" "fa19d9b1dce14efe9b25ee1fc4b6bc36c3de0d613f1592a1c3e8028b65dee340"`
[INFO] running `"docker" "rm" "-f" "fa19d9b1dce14efe9b25ee1fc4b6bc36c3de0d613f1592a1c3e8028b65dee340"`
[INFO] [stdout] fa19d9b1dce14efe9b25ee1fc4b6bc36c3de0d613f1592a1c3e8028b65dee340
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 476aab1c18b503ffc52c85fd8156f2f95531a74ba7ff7bcc815b593226f6a547
[INFO] running `"docker" "start" "-a" "476aab1c18b503ffc52c85fd8156f2f95531a74ba7ff7bcc815b593226f6a547"`
[INFO] [stderr]    Compiling challenge_247_easy_secret_santa v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "476aab1c18b503ffc52c85fd8156f2f95531a74ba7ff7bcc815b593226f6a547"`
[INFO] running `"docker" "rm" "-f" "476aab1c18b503ffc52c85fd8156f2f95531a74ba7ff7bcc815b593226f6a547"`
[INFO] [stdout] 476aab1c18b503ffc52c85fd8156f2f95531a74ba7ff7bcc815b593226f6a547
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tbelaire/dailyprogrammer_challenge247_easy_secret_santa:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 64829ea1f9b580c93bb783a496234c98ad8e5e87f6511aa5b30d084356b750c3
[INFO] running `"docker" "start" "-a" "64829ea1f9b580c93bb783a496234c98ad8e5e87f6511aa5b30d084356b750c3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/challenge_247_easy_secret_santa-d8a9ce72f861db47
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_infeasible ... ok
[INFO] [stdout] test test_family_constructor ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "64829ea1f9b580c93bb783a496234c98ad8e5e87f6511aa5b30d084356b750c3"`
[INFO] running `"docker" "rm" "-f" "64829ea1f9b580c93bb783a496234c98ad8e5e87f6511aa5b30d084356b750c3"`
[INFO] [stdout] 64829ea1f9b580c93bb783a496234c98ad8e5e87f6511aa5b30d084356b750c3