[INFO] cloning repository https://github.com/imtira/wkv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imtira/wkv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimtira%2Fwkv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimtira%2Fwkv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23794966f95eea3961c6aec7eae923743a8b75bb
[INFO] testing imtira/wkv against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimtira%2Fwkv" "/workspace/builds/worker-92/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-92/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imtira/wkv on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/imtira/wkv
[INFO] finished tweaking git repo https://github.com/imtira/wkv
[INFO] tweaked toml for git repo https://github.com/imtira/wkv written to /workspace/builds/worker-92/source/Cargo.toml
[INFO] crate git repo https://github.com/imtira/wkv already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16abf533424d96e294ff58928e7c38adf8959936d31facadaab657ddbf01a845
[INFO] running `Command { std: "docker" "start" "-a" "16abf533424d96e294ff58928e7c38adf8959936d31facadaab657ddbf01a845", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16abf533424d96e294ff58928e7c38adf8959936d31facadaab657ddbf01a845", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16abf533424d96e294ff58928e7c38adf8959936d31facadaab657ddbf01a845", kill_on_drop: false }`
[INFO] [stdout] 16abf533424d96e294ff58928e7c38adf8959936d31facadaab657ddbf01a845
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 230fd7faec9cd66a1d70a445833bfcb1d577b401817c279341e3615eac17c3ab
[INFO] running `Command { std: "docker" "start" "-a" "230fd7faec9cd66a1d70a445833bfcb1d577b401817c279341e3615eac17c3ab", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling wkv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/lib.rs:36:38
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl std::convert::From<std::option::NoneError> for WKVError
[INFO] [stdout]    |                                      ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/lib.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |   fn from(_: std::option::NoneError) -> Self
[INFO] [stdout]    |                           ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/lib.rs:91:23
[INFO] [stdout]     |
[INFO] [stdout] 89  | / pub fn validate_windows95(key: &'_ str) -> Result<Key, WKVError>
[INFO] [stdout] 90  | | {
[INFO] [stdout] 91  | |   match key.get(0..=2)? {
[INFO] [stdout]     | |                       ^ use `.ok_or(...)?` to provide an error compatible with `Result<Key, WKVError>`
[INFO] [stdout] 92  | |     "333" | "444" | "555" | "666" | "777" | "888" | "999" => Err(WKVError::InvalidDigitPosition),
[INFO] [stdout] ...   |
[INFO] [stdout] 99  | |   }
[INFO] [stdout] 100 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<Key, WKVError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result`
[INFO] [stdout]    --> src/lib.rs:94:38
[INFO] [stdout]     |
[INFO] [stdout] 89  | / pub fn validate_windows95(key: &'_ str) -> Result<Key, WKVError>
[INFO] [stdout] 90  | | {
[INFO] [stdout] 91  | |   match key.get(0..=2)? {
[INFO] [stdout] 92  | |     "333" | "444" | "555" | "666" | "777" | "888" | "999" => Err(WKVError::InvalidDigitPosition),
[INFO] [stdout] 93  | |     _ =>
[INFO] [stdout] 94  | |       if mod7(key.as_bytes().get(4..)?)? {
[INFO] [stdout]     | |                                      ^ use `.ok_or(...)?` to provide an error compatible with `Result<Key, WKVError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 99  | |   }
[INFO] [stdout] 100 | | }
[INFO] [stdout]     | |_- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<Key, WKVError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0412, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wkv`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "230fd7faec9cd66a1d70a445833bfcb1d577b401817c279341e3615eac17c3ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "230fd7faec9cd66a1d70a445833bfcb1d577b401817c279341e3615eac17c3ab", kill_on_drop: false }`
[INFO] [stdout] 230fd7faec9cd66a1d70a445833bfcb1d577b401817c279341e3615eac17c3ab
