[INFO] fetching crate practicum 0.0.0...
[INFO] testing practicum-0.0.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate practicum 0.0.0 into /workspace/builds/worker-79/source
[INFO] validating manifest of crates.io crate practicum 0.0.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate practicum 0.0.0
[INFO] finished tweaking crates.io crate practicum 0.0.0
[INFO] tweaked toml for crates.io crate practicum 0.0.0 written to /workspace/builds/worker-79/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e23713566e702decf5706251a961cbe5ac4e0fabbcd9173f5a1aba04be0e157
[INFO] running `Command { std: "docker" "start" "-a" "8e23713566e702decf5706251a961cbe5ac4e0fabbcd9173f5a1aba04be0e157", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e23713566e702decf5706251a961cbe5ac4e0fabbcd9173f5a1aba04be0e157", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e23713566e702decf5706251a961cbe5ac4e0fabbcd9173f5a1aba04be0e157", kill_on_drop: false }`
[INFO] [stdout] 8e23713566e702decf5706251a961cbe5ac4e0fabbcd9173f5a1aba04be0e157
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4a2279a88182fbf9a082e0ecd65c343d8a3f12324b07188e9af95546df991a0
[INFO] running `Command { std: "docker" "start" "-a" "d4a2279a88182fbf9a082e0ecd65c343d8a3f12324b07188e9af95546df991a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling practicum v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "d4a2279a88182fbf9a082e0ecd65c343d8a3f12324b07188e9af95546df991a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4a2279a88182fbf9a082e0ecd65c343d8a3f12324b07188e9af95546df991a0", kill_on_drop: false }`
[INFO] [stdout] d4a2279a88182fbf9a082e0ecd65c343d8a3f12324b07188e9af95546df991a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96c23eb5874e2aee36c66482160e793c84215e1bfd4995cc644565387926ce52
[INFO] running `Command { std: "docker" "start" "-a" "96c23eb5874e2aee36c66482160e793c84215e1bfd4995cc644565387926ce52", kill_on_drop: false }`
[INFO] [stderr]    Compiling practicum v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/practicum-4b6a13616f3f1b0d)
[INFO] running `Command { std: "docker" "inspect" "96c23eb5874e2aee36c66482160e793c84215e1bfd4995cc644565387926ce52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96c23eb5874e2aee36c66482160e793c84215e1bfd4995cc644565387926ce52", kill_on_drop: false }`
[INFO] [stdout] 96c23eb5874e2aee36c66482160e793c84215e1bfd4995cc644565387926ce52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f1931d8c2b2d44eb999d0a252bfa845ab943095c3cee9fafca1d9ced0709a96f
[INFO] running `Command { std: "docker" "start" "-a" "f1931d8c2b2d44eb999d0a252bfa845ab943095c3cee9fafca1d9ced0709a96f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/practicum-4b6a13616f3f1b0d)
[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" "f1931d8c2b2d44eb999d0a252bfa845ab943095c3cee9fafca1d9ced0709a96f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1931d8c2b2d44eb999d0a252bfa845ab943095c3cee9fafca1d9ced0709a96f", kill_on_drop: false }`
[INFO] [stdout] f1931d8c2b2d44eb999d0a252bfa845ab943095c3cee9fafca1d9ced0709a96f