[INFO] fetching crate matchmaker 0.1.0...
[INFO] testing matchmaker-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate matchmaker 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate matchmaker 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-8/source/Cargo.toml
[INFO] crate crates.io crate matchmaker 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 99bf328d463607d3659a44527ac9453abcd399c6453fa091852b1d77c6aec242
[INFO] running `Command { std: "docker" "start" "-a" "99bf328d463607d3659a44527ac9453abcd399c6453fa091852b1d77c6aec242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99bf328d463607d3659a44527ac9453abcd399c6453fa091852b1d77c6aec242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99bf328d463607d3659a44527ac9453abcd399c6453fa091852b1d77c6aec242", kill_on_drop: false }`
[INFO] [stdout] 99bf328d463607d3659a44527ac9453abcd399c6453fa091852b1d77c6aec242
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6353b1102c26c769bb770c0259484308933f2061409e965848af3ea5d1c866c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6353b1102c26c769bb770c0259484308933f2061409e965848af3ea5d1c866c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling getrandom v0.1.15
[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 serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling matchmaker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.54s
[INFO] running `Command { std: "docker" "inspect" "6353b1102c26c769bb770c0259484308933f2061409e965848af3ea5d1c866c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6353b1102c26c769bb770c0259484308933f2061409e965848af3ea5d1c866c0", kill_on_drop: false }`
[INFO] [stdout] 6353b1102c26c769bb770c0259484308933f2061409e965848af3ea5d1c866c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f2c82f7f50e148f96fd88e37549b4d85a315dcec60a92c3a20a3e0c7c40a152
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7f2c82f7f50e148f96fd88e37549b4d85a315dcec60a92c3a20a3e0c7c40a152", kill_on_drop: false }`
[INFO] [stderr]    Compiling matchmaker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.86s
[INFO] running `Command { std: "docker" "inspect" "7f2c82f7f50e148f96fd88e37549b4d85a315dcec60a92c3a20a3e0c7c40a152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f2c82f7f50e148f96fd88e37549b4d85a315dcec60a92c3a20a3e0c7c40a152", kill_on_drop: false }`
[INFO] [stdout] 7f2c82f7f50e148f96fd88e37549b4d85a315dcec60a92c3a20a3e0c7c40a152
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4ade1fa2b7df7c8e6294054248297d1840802c93779a1e2a0051e1aa2355698b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4ade1fa2b7df7c8e6294054248297d1840802c93779a1e2a0051e1aa2355698b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/matchmaker-658a86dd6229bc68
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/da_stb-837b6cb9fbc16541
[INFO] [stdout] running 7 tests
[INFO] [stdout] test da_stb::tests::assign_random_full ... 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_assign_random ... ok
[INFO] [stdout] test da_stb::tests::test_place_students ... 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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stderr]    Doc-tests matchmaker
[INFO] [stdout] test test_match_students ... ok
[INFO] [stdout] test test_match_students_to_multiple_categories ... ok
[INFO] [stdout] test test_match_students_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_not_enough_places ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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 199) ... ok
[INFO] [stdout] test src/da_stb.rs - da_stb::match_students (line 157) ... ok
[INFO] [stdout] test src/lib.rs - Student::new (line 216) ... ok
[INFO] [stdout] test src/lib.rs - (line 24) ... ok
[INFO] [stdout] test src/da_stb.rs - da_stb::match_students_to_multiple_categories (line 20) ... ok
[INFO] [stdout] test src/lib.rs - (line 97) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4ade1fa2b7df7c8e6294054248297d1840802c93779a1e2a0051e1aa2355698b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ade1fa2b7df7c8e6294054248297d1840802c93779a1e2a0051e1aa2355698b", kill_on_drop: false }`
[INFO] [stdout] 4ade1fa2b7df7c8e6294054248297d1840802c93779a1e2a0051e1aa2355698b