[INFO] cloning repository https://github.com/ephraimkunz/Groups
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ephraimkunz/Groups" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fephraimkunz%2FGroups", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d5fd7f46c2f95ee75413f8da16d35cb1723e72bd
[INFO] testing ephraimkunz/Groups against master#c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af for pr-154756
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fephraimkunz%2FGroups" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ephraimkunz/Groups
[INFO] finished tweaking git repo https://github.com/ephraimkunz/Groups
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[INFO] validating manifest of git repo https://github.com/ephraimkunz/Groups on toolchain c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]    Compiling groups_core v0.1.0 (/opt/rustwide/workdir/groups_core)
[INFO] [stdout] warning: struct `MinMaxStrategy` is never constructed
[INFO] [stdout]   --> groups_core/src/scheduling/min_max_strategy.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct MinMaxStrategy;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `team_sched_score` is never used
[INFO] [stdout]    --> groups_core/src/scheduling/min_max_strategy.rs:159:4
[INFO] [stdout]     |
[INFO] [stdout] 159 | fn team_sched_score(team: &[usize], students: &[Student]) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling groups_server v0.1.0 (/opt/rustwide/workdir/groups_server)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 40s
[INFO] running `Command { std: "docker" "inspect" "65df18fd747c097ad2f7bc4b219f3e96554f6694b0099eee6e22d63b9389938f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65df18fd747c097ad2f7bc4b219f3e96554f6694b0099eee6e22d63b9389938f", kill_on_drop: false }`
[INFO] [stdout] 65df18fd747c097ad2f7bc4b219f3e96554f6694b0099eee6e22d63b9389938f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7972a982cd047150209a0b9ce85901e69163b91f98d729f657e46630f2bb7e92
[INFO] running `Command { std: "docker" "start" "-a" "7972a982cd047150209a0b9ce85901e69163b91f98d729f657e46630f2bb7e92", kill_on_drop: false }`
[INFO] [stdout] warning: struct `MinMaxStrategy` is never constructed
[INFO] [stdout]   --> groups_core/src/scheduling/min_max_strategy.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct MinMaxStrategy;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `team_sched_score` is never used
[INFO] [stdout]    --> groups_core/src/scheduling/min_max_strategy.rs:159:4
[INFO] [stdout]     |
[INFO] [stdout] 159 | fn team_sched_score(team: &[usize], students: &[Student]) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling groups_core v0.1.0 (/opt/rustwide/workdir/groups_core)
[INFO] [stderr]    Compiling groups_server v0.1.0 (/opt/rustwide/workdir/groups_server)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.43s
[INFO] running `Command { std: "docker" "inspect" "7972a982cd047150209a0b9ce85901e69163b91f98d729f657e46630f2bb7e92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7972a982cd047150209a0b9ce85901e69163b91f98d729f657e46630f2bb7e92", kill_on_drop: false }`
[INFO] [stdout] 7972a982cd047150209a0b9ce85901e69163b91f98d729f657e46630f2bb7e92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 82033b56d66d9d9bc882f4760437cc01e6c3545b5f3cc38b4bd7979cbe94ecf7
[INFO] running `Command { std: "docker" "start" "-a" "82033b56d66d9d9bc882f4760437cc01e6c3545b5f3cc38b4bd7979cbe94ecf7", kill_on_drop: false }`
[INFO] [stderr] warning: struct `MinMaxStrategy` is never constructed
[INFO] [stderr]   --> groups_core/src/scheduling/min_max_strategy.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub struct MinMaxStrategy;
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `team_sched_score` is never used
[INFO] [stderr]    --> groups_core/src/scheduling/min_max_strategy.rs:159:4
[INFO] [stderr]     |
[INFO] [stderr] 159 | fn team_sched_score(team: &[usize], students: &[Student]) -> f64 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `groups_core` (lib) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/groups_core-1b281903a9234981)
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test scheduling::tests::pretty_hours_negative_offset ... ok
[INFO] [stdout] test scheduling::min_max_strategy::tests::test_team_sched_score_complete_compatibility ... ok
[INFO] [stdout] test scheduling::min_max_strategy::tests::test_team_sched_score_complete_incompatibility ... ok
[INFO] [stdout] test scheduling::min_max_strategy::tests::test_team_sched_score_34_blocks_compatible ... ok
[INFO] [stdout] test scheduling::min_max_strategy::tests::test_team_sched_score_further_compatibility_unnecessary ... ok
[INFO] [stdout] test scheduling::tests::groups_no_size ... ok
[INFO] [stdout] test scheduling::tests::groups_no_students ... ok
[INFO] [stdout] test student::tests::invalid_timezone_decode ... ok
[INFO] [stdout] test student::tests::round_trip_complex_encoding ... ok
[INFO] [stdout] test student::tests::test_avail_same_tz ... ok
[INFO] [stdout] test student::tests::test_avail_offset_retarded_wraparound ... ok
[INFO] [stdout] test student::tests::empty_decode ... ok
[INFO] [stdout] test scheduling::tests::pretty_hours_positive_offset ... ok
[INFO] [stdout] test student::tests::test_avail_offset_advanced_wraparound ... ok
[INFO] [stdout] test student::tests::invalid_availability_char_decode ... ok
[INFO] [stdout] test student::tests::missing_section_decode ... ok
[INFO] [stdout] test student::tests::round_trip_simple_encoding ... ok
[INFO] [stdout] test student::tests::too_short_availability_decode ... ok
[INFO] [stdout] test student::tests::test_avail_offset_retarded ... ok
[INFO] [stdout] test student::tests::too_long_availability_decode ... ok
[INFO] [stdout] test student::tests::test_avail_offset_advanced ... ok
[INFO] [stdout] test scheduling::min_max_strategy::tests::test_random ... ok
[INFO] [stdout] test scheduling::tests::no_crash_if_unfull_team ... ok
[INFO] [stdout] test scheduling::hillclimbing_strategy::tests::test_large_random has been running for over 60 seconds
[INFO] [stdout] test scheduling::hillclimbing_strategy::tests::test_random has been running for over 60 seconds
[INFO] [stdout] test scheduling::min_max_strategy::tests::test_large_random has been running for over 60 seconds
[INFO] [stdout] test scheduling::tests::groups_single_student has been running for over 60 seconds
[INFO] [stdout] test scheduling::tests::groups_single_student ... ok
[INFO] [stdout] test scheduling::hillclimbing_strategy::tests::test_large_random ... ok
[INFO] [stdout] test scheduling::hillclimbing_strategy::tests::test_random ... ok
[INFO] [stdout] test scheduling::min_max_strategy::tests::test_large_random ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 371.88s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/groups_server-abafc0c42f3442b1)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests groups_core
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "82033b56d66d9d9bc882f4760437cc01e6c3545b5f3cc38b4bd7979cbe94ecf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82033b56d66d9d9bc882f4760437cc01e6c3545b5f3cc38b4bd7979cbe94ecf7", kill_on_drop: false }`
[INFO] [stdout] 82033b56d66d9d9bc882f4760437cc01e6c3545b5f3cc38b4bd7979cbe94ecf7