[INFO] fetching crate matchmaker 0.1.0...
[INFO] testing matchmaker-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate matchmaker 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate matchmaker 0.1.0
[INFO] finished tweaking crates.io crate matchmaker 0.1.0
[INFO] tweaked toml for crates.io crate matchmaker 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate matchmaker 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate matchmaker 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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_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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e30ca8220a396c2b08abc19880f57408515a312dcb4e7339c99154f32f8df12
[INFO] running `Command { std: "docker" "start" "-a" "7e30ca8220a396c2b08abc19880f57408515a312dcb4e7339c99154f32f8df12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e30ca8220a396c2b08abc19880f57408515a312dcb4e7339c99154f32f8df12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e30ca8220a396c2b08abc19880f57408515a312dcb4e7339c99154f32f8df12", kill_on_drop: false }`
[INFO] [stdout] 7e30ca8220a396c2b08abc19880f57408515a312dcb4e7339c99154f32f8df12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e37e89768b0c58d2400b6377a80ed665e17a50ad0f4a3114c8cdd63f00938fb
[INFO] running `Command { std: "docker" "start" "-a" "1e37e89768b0c58d2400b6377a80ed665e17a50ad0f4a3114c8cdd63f00938fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling matchmaker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.21s
[INFO] running `Command { std: "docker" "inspect" "1e37e89768b0c58d2400b6377a80ed665e17a50ad0f4a3114c8cdd63f00938fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e37e89768b0c58d2400b6377a80ed665e17a50ad0f4a3114c8cdd63f00938fb", kill_on_drop: false }`
[INFO] [stdout] 1e37e89768b0c58d2400b6377a80ed665e17a50ad0f4a3114c8cdd63f00938fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20f2366998ff29f82a653b3b5a0d7f50fbd0ef8f354875270290eef9a944fffa
[INFO] running `Command { std: "docker" "start" "-a" "20f2366998ff29f82a653b3b5a0d7f50fbd0ef8f354875270290eef9a944fffa", kill_on_drop: false }`
[INFO] [stderr]    Compiling matchmaker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "20f2366998ff29f82a653b3b5a0d7f50fbd0ef8f354875270290eef9a944fffa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20f2366998ff29f82a653b3b5a0d7f50fbd0ef8f354875270290eef9a944fffa", kill_on_drop: false }`
[INFO] [stdout] 20f2366998ff29f82a653b3b5a0d7f50fbd0ef8f354875270290eef9a944fffa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 12112648aa1637256b0a3999a7a4c405f1bf78489d4f11b6e9bf19dbc026ac9a
[INFO] running `Command { std: "docker" "start" "-a" "12112648aa1637256b0a3999a7a4c405f1bf78489d4f11b6e9bf19dbc026ac9a", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/matchmaker-4ccf4bc762813183)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test da_stb::tests::test_assign_random ... ok
[INFO] [stdout] test da_stb::tests::test_assign_random_exclude ... ok
[INFO] [stdout] test da_stb::tests::test_draw_order ... ok
[INFO] [stdout] test da_stb::tests::test_place_students ... ok
[INFO] [stdout] test da_stb::tests::assign_random_full ... ok
[INFO] [stdout] test da_stb::tests::test_truncate_categories ... ok
[INFO] [stdout] test da_stb::tests::test_place_students_with_exclude ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/da_stb.rs (/opt/rustwide/target/debug/deps/da_stb-ca1d07bcffe6016e)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_match_students ... ok
[INFO] [stdout] test test_match_students_not_enough_places ... ok
[INFO] [stdout] test test_match_students_to_multiple_categories_not_enough_places ... ok
[INFO] [stdout] test test_match_students_to_multiple_categories_more_than_enough_places ... ok
[INFO] [stdout] test test_match_students_to_multiple_categories ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests matchmaker
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - Category::new (line 309) ... ok
[INFO] [stdout] test src/lib.rs - Student::new (line 216) ... ok
[INFO] [stdout] test src/lib.rs - Student::new (line 199) ... ok
[INFO] [stdout] test src/lib.rs - (line 24) ... ok
[INFO] [stdout] test src/lib.rs - (line 97) ... ok
[INFO] [stdout] test src/da_stb.rs - da_stb::match_students_to_multiple_categories (line 20) ... ok
[INFO] [stdout] test src/da_stb.rs - da_stb::match_students (line 157) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.83s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "12112648aa1637256b0a3999a7a4c405f1bf78489d4f11b6e9bf19dbc026ac9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12112648aa1637256b0a3999a7a4c405f1bf78489d4f11b6e9bf19dbc026ac9a", kill_on_drop: false }`
[INFO] [stdout] 12112648aa1637256b0a3999a7a4c405f1bf78489d4f11b6e9bf19dbc026ac9a