[INFO] fetching crate weblab-assignment-structure 0.3.4...
[INFO] testing weblab-assignment-structure-0.3.4 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate weblab-assignment-structure 0.3.4 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate weblab-assignment-structure 0.3.4
[INFO] finished tweaking crates.io crate weblab-assignment-structure 0.3.4
[INFO] tweaked toml for crates.io crate weblab-assignment-structure 0.3.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate weblab-assignment-structure 0.3.4 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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_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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fd5a635b87853a8f66fa87f46ad983f9448052fcf65a771f71cc3cf3698cb57
[INFO] running `Command { std: "docker" "start" "-a" "0fd5a635b87853a8f66fa87f46ad983f9448052fcf65a771f71cc3cf3698cb57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fd5a635b87853a8f66fa87f46ad983f9448052fcf65a771f71cc3cf3698cb57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fd5a635b87853a8f66fa87f46ad983f9448052fcf65a771f71cc3cf3698cb57", kill_on_drop: false }`
[INFO] [stdout] 0fd5a635b87853a8f66fa87f46ad983f9448052fcf65a771f71cc3cf3698cb57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 758ab4e4455014c4edf744dd09c8a52ce052a3fcc94b0d6c13ed3196bccb027a
[INFO] running `Command { std: "docker" "start" "-a" "758ab4e4455014c4edf744dd09c8a52ce052a3fcc94b0d6c13ed3196bccb027a", kill_on_drop: false }`
[INFO] [stderr]    Compiling weblab-assignment-structure v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "758ab4e4455014c4edf744dd09c8a52ce052a3fcc94b0d6c13ed3196bccb027a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "758ab4e4455014c4edf744dd09c8a52ce052a3fcc94b0d6c13ed3196bccb027a", kill_on_drop: false }`
[INFO] [stdout] 758ab4e4455014c4edf744dd09c8a52ce052a3fcc94b0d6c13ed3196bccb027a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5040c47031d0e0a16fc43626559c8333779c6bcaa772c103cc5b35e7ce4c13a3
[INFO] running `Command { std: "docker" "start" "-a" "5040c47031d0e0a16fc43626559c8333779c6bcaa772c103cc5b35e7ce4c13a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling weblab-assignment-structure v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "5040c47031d0e0a16fc43626559c8333779c6bcaa772c103cc5b35e7ce4c13a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5040c47031d0e0a16fc43626559c8333779c6bcaa772c103cc5b35e7ce4c13a3", kill_on_drop: false }`
[INFO] [stdout] 5040c47031d0e0a16fc43626559c8333779c6bcaa772c103cc5b35e7ce4c13a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ec14fca4f8acdd1f3202fe7586f77a42f1a5b376da38f2b9c3594d5ab980b38b
[INFO] running `Command { std: "docker" "start" "-a" "ec14fca4f8acdd1f3202fe7586f77a42f1a5b376da38f2b9c3594d5ab980b38b", 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/weblab_assignment_structure-62199da8cb6c850b)
[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 weblab_assignment_structure
[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" "ec14fca4f8acdd1f3202fe7586f77a42f1a5b376da38f2b9c3594d5ab980b38b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec14fca4f8acdd1f3202fe7586f77a42f1a5b376da38f2b9c3594d5ab980b38b", kill_on_drop: false }`
[INFO] [stdout] ec14fca4f8acdd1f3202fe7586f77a42f1a5b376da38f2b9c3594d5ab980b38b