[INFO] cloning repository https://github.com/tbelaire/dailyprogrammer_challenge247_easy_secret_santa
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tbelaire/dailyprogrammer_challenge247_easy_secret_santa" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftbelaire%2Fdailyprogrammer_challenge247_easy_secret_santa"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftbelaire%2Fdailyprogrammer_challenge247_easy_secret_santa'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 711646bcb7d841928c02268d3ca07747db13c311
[INFO] testing tbelaire/dailyprogrammer_challenge247_easy_secret_santa against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftbelaire%2Fdailyprogrammer_challenge247_easy_secret_santa" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tbelaire/dailyprogrammer_challenge247_easy_secret_santa on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tbelaire/dailyprogrammer_challenge247_easy_secret_santa
[INFO] finished tweaking git repo https://github.com/tbelaire/dailyprogrammer_challenge247_easy_secret_santa
[INFO] tweaked toml for git repo https://github.com/tbelaire/dailyprogrammer_challenge247_easy_secret_santa written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/tbelaire/dailyprogrammer_challenge247_easy_secret_santa already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 79f60fc0b5c2d8fda180427bf262d97303ce32de2e7ae64ffb5d0fc0dfc7ec8d
[INFO] running `"docker" "start" "-a" "79f60fc0b5c2d8fda180427bf262d97303ce32de2e7ae64ffb5d0fc0dfc7ec8d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling challenge_247_easy_secret_santa v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:74:16
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let file = try!(File::open(path));
[INFO] [stderr]    |                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:80:17
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let l = try!(l);
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:73:56
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn load_family(path: &Path) -> Result<Vec<Family>, Box<std::error::Error>> {
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:60:28
[INFO] [stderr]    |
[INFO] [stderr] 60 |                      error.description());
[INFO] [stderr]    |                            ^^^^^^^^^^^
[INFO] [stderr] 
[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] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "79f60fc0b5c2d8fda180427bf262d97303ce32de2e7ae64ffb5d0fc0dfc7ec8d"`
[INFO] running `"docker" "rm" "-f" "79f60fc0b5c2d8fda180427bf262d97303ce32de2e7ae64ffb5d0fc0dfc7ec8d"`
[INFO] [stdout] 79f60fc0b5c2d8fda180427bf262d97303ce32de2e7ae64ffb5d0fc0dfc7ec8d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9b417889c98a9d1618837c0ffa264b011f5df22b3055cb8e96926f676de661ad
[INFO] running `"docker" "start" "-a" "9b417889c98a9d1618837c0ffa264b011f5df22b3055cb8e96926f676de661ad"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling challenge_247_easy_secret_santa v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:74:16
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let file = try!(File::open(path));
[INFO] [stderr]    |                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:80:17
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let l = try!(l);
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:73:56
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn load_family(path: &Path) -> Result<Vec<Family>, Box<std::error::Error>> {
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:60:28
[INFO] [stderr]    |
[INFO] [stderr] 60 |                      error.description());
[INFO] [stderr]    |                            ^^^^^^^^^^^
[INFO] [stderr] 
[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: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "9b417889c98a9d1618837c0ffa264b011f5df22b3055cb8e96926f676de661ad"`
[INFO] running `"docker" "rm" "-f" "9b417889c98a9d1618837c0ffa264b011f5df22b3055cb8e96926f676de661ad"`
[INFO] [stdout] 9b417889c98a9d1618837c0ffa264b011f5df22b3055cb8e96926f676de661ad
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 238fc2cae114a606b9d10c79bde658f8d12332032c5e40e6ea8493ec5920bb16
[INFO] running `"docker" "start" "-a" "238fc2cae114a606b9d10c79bde658f8d12332032c5e40e6ea8493ec5920bb16"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:74:16
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let file = try!(File::open(path));
[INFO] [stderr]    |                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:80:17
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let l = try!(l);
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:73:56
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn load_family(path: &Path) -> Result<Vec<Family>, Box<std::error::Error>> {
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:60:28
[INFO] [stderr]    |
[INFO] [stderr] 60 |                      error.description());
[INFO] [stderr]    |                            ^^^^^^^^^^^
[INFO] [stderr] 
[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: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/challenge_247_easy_secret_santa-6c297c09e666527c
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_family_constructor ... ok
[INFO] [stdout] test test_infeasible ... 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" "238fc2cae114a606b9d10c79bde658f8d12332032c5e40e6ea8493ec5920bb16"`
[INFO] running `"docker" "rm" "-f" "238fc2cae114a606b9d10c79bde658f8d12332032c5e40e6ea8493ec5920bb16"`
[INFO] [stdout] 238fc2cae114a606b9d10c79bde658f8d12332032c5e40e6ea8493ec5920bb16