[INFO] fetching crate fera 0.2.0...
[INFO] testing fera-0.2.0 against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] extracting crate fera 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate fera 0.2.0 on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fera 0.2.0
[INFO] finished tweaking crates.io crate fera 0.2.0
[INFO] tweaked toml for crates.io crate fera 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 46 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v0.9.1 (latest: v2.5.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cloudabi v0.0.3 (latest: v0.1.0)
[INFO] [stderr]       Adding idna v0.1.5 (latest: v0.5.0)
[INFO] [stderr]       Adding itertools v0.7.11 (latest: v0.13.0)
[INFO] [stderr]       Adding percent-encoding v1.0.1 (latest: v2.3.1)
[INFO] [stderr]       Adding pulldown-cmark v0.1.2 (latest: v0.11.0)
[INFO] [stderr]       Adding quote v0.3.15 (latest: v1.0.36)
[INFO] [stderr]       Adding rand v0.5.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.23)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding syn v0.11.11 (latest: v2.0.66)
[INFO] [stderr]       Adding toml v0.4.10 (latest: v0.8.13)
[INFO] [stderr]       Adding unicode-xid v0.0.4 (latest: v0.2.4)
[INFO] [stderr]       Adding url v1.7.2 (latest: v2.5.0)
[INFO] [stderr]       Adding version-sync v0.5.0 (latest: v0.9.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fera-fun v0.1.0
[INFO] [stderr]   Downloaded fera-unionfind v0.1.0
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded synom v0.11.3
[INFO] [stderr]   Downloaded bitflags v0.9.1
[INFO] [stderr]   Downloaded fera-array v0.1.0
[INFO] [stderr]   Downloaded rand v0.5.6
[INFO] [stderr]   Downloaded itertools v0.7.11
[INFO] [stderr]   Downloaded syn v0.11.11
[INFO] [stderr]   Downloaded pulldown-cmark v0.1.2
[INFO] [stderr]   Downloaded unicode-xid v0.0.4
[INFO] [stderr]   Downloaded version-sync v0.5.0
[INFO] [stderr]   Downloaded fera-optional v0.2.0
[INFO] [stderr]   Downloaded fera-ext v0.2.0
[INFO] [stderr]   Downloaded fera-graph v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc56d33bb6e7fbe198184e51b48617a2c494c532f84fe28f3f9ff2e44c3c2554
[INFO] running `Command { std: "docker" "start" "-a" "cc56d33bb6e7fbe198184e51b48617a2c494c532f84fe28f3f9ff2e44c3c2554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc56d33bb6e7fbe198184e51b48617a2c494c532f84fe28f3f9ff2e44c3c2554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc56d33bb6e7fbe198184e51b48617a2c494c532f84fe28f3f9ff2e44c3c2554", kill_on_drop: false }`
[INFO] [stdout] cc56d33bb6e7fbe198184e51b48617a2c494c532f84fe28f3f9ff2e44c3c2554
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62b08a99cb52ec6de0f281c9e20b0818c366c54ad63e61e86e98f3d8f69da5f2
[INFO] running `Command { std: "docker" "start" "-a" "62b08a99cb52ec6de0f281c9e20b0818c366c54ad63e61e86e98f3d8f69da5f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling fera v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `tree`
[INFO] [stdout]   --> src/lib.rs:41:15
[INFO] [stdout]    |
[INFO] [stdout] 41 |         #[cfg(feature = $f)]
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 | crate_as_mod!(fera_tree, tree, "tree", "Tree data structures.");
[INFO] [stdout]    | --------------------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `array`, `ext`, `fera-array`, `fera-ext`, `fera-fun`, `fera-graph`, `fera-optional`, `fera-unionfind`, `fun`, `graph`, `optional`, `unionfind`
[INFO] [stdout]    = help: consider adding `tree` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/build-scripts.html#rustc-check-cfg> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `crate_as_mod` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `tree`
[INFO] [stdout]   --> src/lib.rs:45:15
[INFO] [stdout]    |
[INFO] [stdout] 45 |         #[cfg(feature = $f)]
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 | crate_as_mod!(fera_tree, tree, "tree", "Tree data structures.");
[INFO] [stdout]    | --------------------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `array`, `ext`, `fera-array`, `fera-ext`, `fera-fun`, `fera-graph`, `fera-optional`, `fera-unionfind`, `fun`, `graph`, `optional`, `unionfind`
[INFO] [stdout]    = help: consider adding `tree` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/build-scripts.html#rustc-check-cfg> for more information about checking conditional configuration
[INFO] [stdout]    = note: this warning originates in the macro `crate_as_mod` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "62b08a99cb52ec6de0f281c9e20b0818c366c54ad63e61e86e98f3d8f69da5f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62b08a99cb52ec6de0f281c9e20b0818c366c54ad63e61e86e98f3d8f69da5f2", kill_on_drop: false }`
[INFO] [stdout] 62b08a99cb52ec6de0f281c9e20b0818c366c54ad63e61e86e98f3d8f69da5f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 479826f82020c5222f2d837bb279b43e2e69edc2c429283cdc298bf5c540afc4
[INFO] running `Command { std: "docker" "start" "-a" "479826f82020c5222f2d837bb279b43e2e69edc2c429283cdc298bf5c540afc4", kill_on_drop: false }`
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling serde v1.0.202
[INFO] [stderr]    Compiling unicode-bidi v0.3.15
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling either v1.12.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stdout] warning: unexpected `cfg` condition value: `tree`
[INFO] [stdout]   --> src/lib.rs:41:15
[INFO] [stdout]    |
[INFO] [stdout] 41 |         #[cfg(feature = $f)]
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 | crate_as_mod!(fera_tree, tree, "tree", "Tree data structures.");
[INFO] [stdout]    | --------------------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `array`, `ext`, `fera-array`, `fera-ext`, `fera-fun`, `fera-graph`, `fera-optional`, `fera-unionfind`, `fun`, `graph`, `optional`, `unionfind`
[INFO] [stdout]    = help: consider adding `tree` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/build-scripts.html#rustc-check-cfg> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `crate_as_mod` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `tree`
[INFO] [stdout]   --> src/lib.rs:45:15
[INFO] [stdout]    |
[INFO] [stdout] 45 |         #[cfg(feature = $f)]
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 | crate_as_mod!(fera_tree, tree, "tree", "Tree data structures.");
[INFO] [stdout]    | --------------------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `array`, `ext`, `fera-array`, `fera-ext`, `fera-fun`, `fera-graph`, `fera-optional`, `fera-unionfind`, `fun`, `graph`, `optional`, `unionfind`
[INFO] [stdout]    = help: consider adding `tree` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/build-scripts.html#rustc-check-cfg> for more information about checking conditional configuration
[INFO] [stdout]    = note: this warning originates in the macro `crate_as_mod` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling version-sync v0.5.0
[INFO] [stderr]    Compiling fera v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `tree`
[INFO] [stdout]   --> src/lib.rs:41:15
[INFO] [stdout]    |
[INFO] [stdout] 41 |         #[cfg(feature = $f)]
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 | crate_as_mod!(fera_tree, tree, "tree", "Tree data structures.");
[INFO] [stdout]    | --------------------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `array`, `ext`, `fera-array`, `fera-ext`, `fera-fun`, `fera-graph`, `fera-optional`, `fera-unionfind`, `fun`, `graph`, `optional`, `unionfind`
[INFO] [stdout]    = help: consider adding `tree` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/build-scripts.html#rustc-check-cfg> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `crate_as_mod` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `tree`
[INFO] [stdout]   --> src/lib.rs:45:15
[INFO] [stdout]    |
[INFO] [stdout] 45 |         #[cfg(feature = $f)]
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 | crate_as_mod!(fera_tree, tree, "tree", "Tree data structures.");
[INFO] [stdout]    | --------------------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `array`, `ext`, `fera-array`, `fera-ext`, `fera-fun`, `fera-graph`, `fera-optional`, `fera-unionfind`, `fun`, `graph`, `optional`, `unionfind`
[INFO] [stdout]    = help: consider adding `tree` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/build-scripts.html#rustc-check-cfg> for more information about checking conditional configuration
[INFO] [stdout]    = note: this warning originates in the macro `crate_as_mod` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `Command { std: "docker" "inspect" "479826f82020c5222f2d837bb279b43e2e69edc2c429283cdc298bf5c540afc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "479826f82020c5222f2d837bb279b43e2e69edc2c429283cdc298bf5c540afc4", kill_on_drop: false }`
[INFO] [stdout] 479826f82020c5222f2d837bb279b43e2e69edc2c429283cdc298bf5c540afc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0c73083ec9775280363c510b096b26f5bb9c22eb16d5fd2eea83052b4cee2f8f
[INFO] running `Command { std: "docker" "start" "-a" "0c73083ec9775280363c510b096b26f5bb9c22eb16d5fd2eea83052b4cee2f8f", kill_on_drop: false }`
[INFO] [stderr] warning: unexpected `cfg` condition value: `tree`
[INFO] [stderr]   --> src/lib.rs:41:15
[INFO] [stderr]    |
[INFO] [stderr] 41 |         #[cfg(feature = $f)]
[INFO] [stderr]    |               ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 72 | crate_as_mod!(fera_tree, tree, "tree", "Tree data structures.");
[INFO] [stderr]    | --------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected values for `feature` are: `array`, `ext`, `fera-array`, `fera-ext`, `fera-fun`, `fera-graph`, `fera-optional`, `fera-unionfind`, `fun`, `graph`, `optional`, `unionfind`
[INFO] [stderr]    = help: consider adding `tree` as a feature in `Cargo.toml`
[INFO] [stderr]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/build-scripts.html#rustc-check-cfg> for more information about checking conditional configuration
[INFO] [stderr]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `crate_as_mod` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition value: `tree`
[INFO] [stderr]   --> src/lib.rs:45:15
[INFO] [stderr]    |
[INFO] [stderr] 45 |         #[cfg(feature = $f)]
[INFO] [stderr]    |               ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 72 | crate_as_mod!(fera_tree, tree, "tree", "Tree data structures.");
[INFO] [stderr]    | --------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected values for `feature` are: `array`, `ext`, `fera-array`, `fera-ext`, `fera-fun`, `fera-graph`, `fera-optional`, `fera-unionfind`, `fun`, `graph`, `optional`, `unionfind`
[INFO] [stderr]    = help: consider adding `tree` as a feature in `Cargo.toml`
[INFO] [stderr]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/build-scripts.html#rustc-check-cfg> for more information about checking conditional configuration
[INFO] [stderr]    = note: this warning originates in the macro `crate_as_mod` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `fera` (lib) generated 2 warnings
[INFO] [stderr] warning: `fera` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fera-64afb5da101e559e)
[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/version-numbers.rs (/opt/rustwide/target/debug/deps/version_numbers-d48c36963d16945b)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test readme_deps ... ok
[INFO] [stdout] test html_root_url ... 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]    Doc-tests fera
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 18) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 18) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `fera::ext`
[INFO] [stdout]   --> src/lib.rs:21:11
[INFO] [stdout]    |
[INFO] [stdout] 4  | use fera::ext::VecExt;
[INFO] [stdout]    |           ^^^ could not find `ext` in `fera`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/workdir/src/lib.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 | crate_as_mod!(fera_ext, ext, "ext", "Extension traits for std types.");
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    = note: the item is gated behind the `ext` feature
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `fera::fun`
[INFO] [stdout]   --> src/lib.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 5  | use fera::fun::vec;
[INFO] [stdout]    |           ^^^ could not find `fun` in `fera`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/workdir/src/lib.rs:59:25
[INFO] [stdout]    |
[INFO] [stdout] 59 | crate_as_mod!(fera_fun, fun, "fun", "Free function for fun programming.");
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    = note: the item is gated behind the `fun` feature
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 18)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "0c73083ec9775280363c510b096b26f5bb9c22eb16d5fd2eea83052b4cee2f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c73083ec9775280363c510b096b26f5bb9c22eb16d5fd2eea83052b4cee2f8f", kill_on_drop: false }`
[INFO] [stdout] 0c73083ec9775280363c510b096b26f5bb9c22eb16d5fd2eea83052b4cee2f8f
