[INFO] fetching crate tagged-tree 0.4.0...
[INFO] testing tagged-tree-0.4.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate tagged-tree 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate tagged-tree 0.4.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tagged-tree 0.4.0
[INFO] finished tweaking crates.io crate tagged-tree 0.4.0
[INFO] tweaked toml for crates.io crate tagged-tree 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded duplicate v0.3.0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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] 374926142fcfc3f97d88702624923b928d083e7bfaaff1a767459cf9ff635625
[INFO] running `Command { std: "docker" "start" "-a" "374926142fcfc3f97d88702624923b928d083e7bfaaff1a767459cf9ff635625", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "374926142fcfc3f97d88702624923b928d083e7bfaaff1a767459cf9ff635625", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "374926142fcfc3f97d88702624923b928d083e7bfaaff1a767459cf9ff635625", kill_on_drop: false }`
[INFO] [stdout] 374926142fcfc3f97d88702624923b928d083e7bfaaff1a767459cf9ff635625
[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=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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b483544f74fdf18654d5405f3b9c643705d8302c7cb7b854fb5bcb0ebd4139d0
[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" "b483544f74fdf18654d5405f3b9c643705d8302c7cb7b854fb5bcb0ebd4139d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling tagged-tree v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "b483544f74fdf18654d5405f3b9c643705d8302c7cb7b854fb5bcb0ebd4139d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b483544f74fdf18654d5405f3b9c643705d8302c7cb7b854fb5bcb0ebd4139d0", kill_on_drop: false }`
[INFO] [stdout] b483544f74fdf18654d5405f3b9c643705d8302c7cb7b854fb5bcb0ebd4139d0
[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=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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a76ef9e8b024aa220eac2aba2218ad5849ed3173ae508ccf7d84bbc8d16634d
[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" "6a76ef9e8b024aa220eac2aba2218ad5849ed3173ae508ccf7d84bbc8d16634d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling mockall_derive v0.10.2
[INFO] [stderr]    Compiling duplicate v0.3.0
[INFO] [stderr]    Compiling mockall v0.10.2
[INFO] [stderr]    Compiling tagged-tree v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 16.88s
[INFO] running `Command { std: "docker" "inspect" "6a76ef9e8b024aa220eac2aba2218ad5849ed3173ae508ccf7d84bbc8d16634d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a76ef9e8b024aa220eac2aba2218ad5849ed3173ae508ccf7d84bbc8d16634d", kill_on_drop: false }`
[INFO] [stdout] 6a76ef9e8b024aa220eac2aba2218ad5849ed3173ae508ccf7d84bbc8d16634d
[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=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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", 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] 8379be6f62397afe7bf02248e9309b2dad7734d9f9157feb087bcfe96c636e23
[INFO] running `Command { std: "docker" "start" "-a" "8379be6f62397afe7bf02248e9309b2dad7734d9f9157feb087bcfe96c636e23", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tagged_tree-4d502eb27e4244e1)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test iterators::depth_first::tests::go_down_one_level_should_fail ... ok
[INFO] [stdout] test iterators::depth_first::tests::go_down_one_level_should_succeed ... ok
[INFO] [stdout] test iterators::depth_first::tests::go_up_one_level_should_succeed ... ok
[INFO] [stdout] test iterators::depth_first::tests_mut::go_down_one_level_should_succeed ... ok
[INFO] [stdout] test iterators::depth_first::tests_mut::go_down_one_level_should_fail ... ok
[INFO] [stdout] test iterators::depth_first::tests::go_up_one_level_should_fail ... ok
[INFO] [stdout] test iterators::depth_first::tests_mut::go_up_one_level_should_fail ... ok
[INFO] [stdout] test iterators::depth_first::tests_mut::go_up_one_level_should_succeed ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/basic.rs (/opt/rustwide/target/debug/deps/basic-c3c3536a6b5b9993)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test can_make_tree ... ok
[INFO] [stdout] test can_make_tree_with_children ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/breadth_first_traversal.rs (/opt/rustwide/target/debug/deps/breadth_first_traversal-1ce1481bea06ee22)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test traverse_empty_tree ... ok
[INFO] [stdout] test traverse_empty_tree_mut ... ok
[INFO] [stdout] test traverse_tree_with_one_generation ... ok
[INFO] [stdout] test traverse_tree_with_two_generations ... ok
[INFO] [stdout] test traverse_tree_with_one_generation_mut ... ok
[INFO] [stderr]      Running tests/depth_first_traversal.rs (/opt/rustwide/target/debug/deps/depth_first_traversal-5f7c660da30cb599)
[INFO] [stdout] test traverse_tree_with_two_generations_mut ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test traverse_empty_tree ... ok
[INFO] [stdout] test traverse_empty_tree_mut ... ok
[INFO] [stdout] test traverse_tree_with_two_generations ... ok
[INFO] [stdout] test traverse_tree_with_two_generations_mut ... ok
[INFO] [stdout] test traverse_tree_with_one_generation_mut ... ok
[INFO] [stdout] test traverse_tree_with_one_generation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tagged-tree
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 387) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.55s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8379be6f62397afe7bf02248e9309b2dad7734d9f9157feb087bcfe96c636e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8379be6f62397afe7bf02248e9309b2dad7734d9f9157feb087bcfe96c636e23", kill_on_drop: false }`
[INFO] [stdout] 8379be6f62397afe7bf02248e9309b2dad7734d9f9157feb087bcfe96c636e23