[INFO] fetching crate daggy 0.7.0...
[INFO] testing daggy-0.7.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate daggy 0.7.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate daggy 0.7.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate daggy 0.7.0
[INFO] finished tweaking crates.io crate daggy 0.7.0
[INFO] tweaked toml for crates.io crate daggy 0.7.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b573beec703b19e5461ef6ae4f4d1c9a1d46a297224c557ecdb6157a33cb26b9
[INFO] running `Command { std: "docker" "start" "-a" "b573beec703b19e5461ef6ae4f4d1c9a1d46a297224c557ecdb6157a33cb26b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b573beec703b19e5461ef6ae4f4d1c9a1d46a297224c557ecdb6157a33cb26b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b573beec703b19e5461ef6ae4f4d1c9a1d46a297224c557ecdb6157a33cb26b9", kill_on_drop: false }`
[INFO] [stdout] b573beec703b19e5461ef6ae4f4d1c9a1d46a297224c557ecdb6157a33cb26b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9f6713c55100195fe9ce579d763f475ac5e5ac5404094eff5a6b943fa2e93da
[INFO] running `Command { std: "docker" "start" "-a" "b9f6713c55100195fe9ce579d763f475ac5e5ac5404094eff5a6b943fa2e93da", kill_on_drop: false }`
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling daggy v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.58s
[INFO] running `Command { std: "docker" "inspect" "b9f6713c55100195fe9ce579d763f475ac5e5ac5404094eff5a6b943fa2e93da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9f6713c55100195fe9ce579d763f475ac5e5ac5404094eff5a6b943fa2e93da", kill_on_drop: false }`
[INFO] [stdout] b9f6713c55100195fe9ce579d763f475ac5e5ac5404094eff5a6b943fa2e93da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d467b486b47ad3d5491dc10eed54078e7d61c877ef7328cfcb38c5327b6b11e7
[INFO] running `Command { std: "docker" "start" "-a" "d467b486b47ad3d5491dc10eed54078e7d61c877ef7328cfcb38c5327b6b11e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling daggy v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `Command { std: "docker" "inspect" "d467b486b47ad3d5491dc10eed54078e7d61c877ef7328cfcb38c5327b6b11e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d467b486b47ad3d5491dc10eed54078e7d61c877ef7328cfcb38c5327b6b11e7", kill_on_drop: false }`
[INFO] [stdout] d467b486b47ad3d5491dc10eed54078e7d61c877ef7328cfcb38c5327b6b11e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5455d2e08d3ea8a11da63a728557f4ae8b158b34bd9ff100f4eb9fdabc0bda7f
[INFO] running `Command { std: "docker" "start" "-a" "5455d2e08d3ea8a11da63a728557f4ae8b158b34bd9ff100f4eb9fdabc0bda7f", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/daggy-b751dfecfed14f93)
[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]      Running tests/add_edges.rs (/opt/rustwide/target/debug/deps/add_edges-77e77434c2564afa)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running tests/add_edges_stable.rs (/opt/rustwide/target/debug/deps/add_edges_stable-7216b052701f3a6e)
[INFO] [stdout] test add_edges_err ... ok
[INFO] [stderr]      Running tests/iterators.rs (/opt/rustwide/target/debug/deps/iterators-347a079cd5db5c95)
[INFO] [stdout] test add_edges_more ... ok
[INFO] [stdout] test add_edges_more2 ... ok
[INFO] [stdout] test add_edges_ok ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test children ... ok
[INFO] [stderr]      Running tests/iterators_stable.rs (/opt/rustwide/target/debug/deps/iterators_stable-0475838ba1004c55)
[INFO] [stdout] test weights ... ok
[INFO] [stdout] test parents ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/stable_indices.rs (/opt/rustwide/target/debug/deps/stable_indices-ba1a73ceead554a4)
[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]      Running tests/walkers.rs (/opt/rustwide/target/debug/deps/walkers-483b20c9f303cae1)
[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] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test count ... ok
[INFO] [stdout] test any ... ok
[INFO] [stdout] test filter ... ok
[INFO] [stdout] test all ... ok
[INFO] [stdout] test chain ... ok
[INFO] [stdout] test children ... ok
[INFO] [stdout] test parents ... ok
[INFO] [stdout] test recursive_walk ... ok
[INFO] [stdout] test fold ... ok
[INFO] [stdout] test find ... ok
[INFO] [stdout] test peekable ... ok
[INFO] [stdout] test nth ... ok
[INFO] [stdout] test last ... ok
[INFO] [stdout] test skip ... ok
[INFO] [stdout] test skip_while ... ok
[INFO] [stderr]      Running tests/walkers_stable.rs (/opt/rustwide/target/debug/deps/walkers_stable-7bf5cb2dd1ef3979)
[INFO] [stdout] test take_while ... ok
[INFO] [stdout] test take ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[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 daggy
[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" "5455d2e08d3ea8a11da63a728557f4ae8b158b34bd9ff100f4eb9fdabc0bda7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5455d2e08d3ea8a11da63a728557f4ae8b158b34bd9ff100f4eb9fdabc0bda7f", kill_on_drop: false }`
[INFO] [stdout] 5455d2e08d3ea8a11da63a728557f4ae8b158b34bd9ff100f4eb9fdabc0bda7f