[INFO] fetching crate open-feature-env-var 0.1.0...
[INFO] checking open-feature-env-var-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate open-feature-env-var 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate open-feature-env-var 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate open-feature-env-var 0.1.0
[INFO] tweaked toml for crates.io crate open-feature-env-var 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate open-feature-env-var 0.1.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate open-feature-env-var 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97ca4a02f0e84bff17bf32a280a3c7a39d05719f7ce9a7dd64aac458c47fe1da
[INFO] running `Command { std: "docker" "start" "-a" "97ca4a02f0e84bff17bf32a280a3c7a39d05719f7ce9a7dd64aac458c47fe1da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97ca4a02f0e84bff17bf32a280a3c7a39d05719f7ce9a7dd64aac458c47fe1da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97ca4a02f0e84bff17bf32a280a3c7a39d05719f7ce9a7dd64aac458c47fe1da", kill_on_drop: false }`
[INFO] [stdout] 97ca4a02f0e84bff17bf32a280a3c7a39d05719f7ce9a7dd64aac458c47fe1da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0aedbfe81fe8d328b079f569f57be008d618333e77c4cfece967120be873623
[INFO] running `Command { std: "docker" "start" "-a" "a0aedbfe81fe8d328b079f569f57be008d618333e77c4cfece967120be873623", kill_on_drop: false }`
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[INFO] [stderr]     Checking open-feature-env-var v0.1.0 (/opt/rustwide/workdir)
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[INFO] [stderr]     Checking cucumber v0.21.1
[INFO] [stdout] error: this type will no longer be must used: Result<MyWorld, Infallible>
[INFO] [stdout]  --> tests/example.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(Debug, cucumber::World)]
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the derive macro `cucumber::World` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> tests/example.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | #[when(regex = "a boolean flag with key \"(.*)\" is evaluated with default value \"(.*)\"")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `when` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> tests/example.rs:53:1
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[then(regex = "the resolved boolean value should be \"(.*)\"")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `then` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> tests/example.rs:61:1
[INFO] [stdout]    |
[INFO] [stdout] 61 | #[when(regex = "a string flag with key \"(.*)\" is evaluated with default value \"(.*)\"")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `when` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> tests/example.rs:71:1
[INFO] [stdout]    |
[INFO] [stdout] 71 | #[then(regex = "the resolved string value should be \"(.*)\"")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `then` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> tests/example.rs:76:1
[INFO] [stdout]    |
[INFO] [stdout] 76 | #[when(regex = "an integer flag with key \"(.*)\" is evaluated with default value (.*)")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `when` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> tests/example.rs:86:1
[INFO] [stdout]    |
[INFO] [stdout] 86 | #[then(regex = "the resolved integer value should be (.*)")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `then` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> tests/example.rs:94:1
[INFO] [stdout]    |
[INFO] [stdout] 94 | #[when(regex = "a float flag with key \"(.*)\" is evaluated with default value (.*)")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `when` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> tests/example.rs:104:1
[INFO] [stdout]     |
[INFO] [stdout] 104 | #[then(regex = "the resolved float value should be (.*)")]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `then` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> tests/example.rs:112:1
[INFO] [stdout]     |
[INFO] [stdout] 112 | / #[when(
[INFO] [stdout] 113 | |     regex = "a boolean flag with key \"(.*)\" is evaluated with details and default value \"(.*)\""
[INFO] [stdout] 114 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `when` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> tests/example.rs:127:1
[INFO] [stdout]     |
[INFO] [stdout] 127 | / #[then(
[INFO] [stdout] 128 | |     regex = "the resolved boolean details value should be \"(.*)\", the variant should be \"(.*)\", and the reason should be \"(.*)\""
[INFO] [stdout] 129 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `then` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> tests/example.rs:147:1
[INFO] [stdout]     |
[INFO] [stdout] 147 | / #[when(
[INFO] [stdout] 148 | |     regex = "a non-existent string flag with key \"(.*)\" is evaluated with details and a default value \"(.*)\""
[INFO] [stdout] 149 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `when` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> tests/example.rs:162:1
[INFO] [stdout]     |
[INFO] [stdout] 162 | / #[then(
[INFO] [stdout] 163 | |     regex = "the reason should indicate an error and the error code should indicate a missing flag with \"(.*)\""
[INFO] [stdout] 164 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `then` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `open-feature-env-var` (test "example") due to 13 previous errors
[INFO] running `Command { std: "docker" "inspect" "a0aedbfe81fe8d328b079f569f57be008d618333e77c4cfece967120be873623", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0aedbfe81fe8d328b079f569f57be008d618333e77c4cfece967120be873623", kill_on_drop: false }`
[INFO] [stdout] a0aedbfe81fe8d328b079f569f57be008d618333e77c4cfece967120be873623
