[INFO] fetching crate goff 0.1.0...
[INFO] checking goff-0.1.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate goff 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate goff 0.1.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate goff 0.1.0
[INFO] finished tweaking crates.io crate goff 0.1.0
[INFO] tweaked toml for crates.io crate goff 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0459221fe637305493821aab550367e037546fe279a9a83773f1de0aaf3b62a
[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" "d0459221fe637305493821aab550367e037546fe279a9a83773f1de0aaf3b62a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0459221fe637305493821aab550367e037546fe279a9a83773f1de0aaf3b62a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0459221fe637305493821aab550367e037546fe279a9a83773f1de0aaf3b62a", kill_on_drop: false }`
[INFO] [stdout] d0459221fe637305493821aab550367e037546fe279a9a83773f1de0aaf3b62a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92c3dd1294ea44232ea71bfdcdb9d0575851608d2385a5ac783fb27cdc56b84d
[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" "92c3dd1294ea44232ea71bfdcdb9d0575851608d2385a5ac783fb27cdc56b84d", kill_on_drop: false }`
[INFO] [stderr]     Checking goff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `option`
[INFO] [stdout]   --> src/error.rs:56:28
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl convert::From<option::NoneError> for Error
[INFO] [stdout]    |                            ^^^^^^^^^ not found in `option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `option`
[INFO] [stdout]   --> src/error.rs:58:27
[INFO] [stdout]    |
[INFO] [stdout] 58 |   fn from(_error: option::NoneError) -> Self
[INFO] [stdout]    |                           ^^^^^^^^^ not found in `option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `option`
[INFO] [stdout]   --> src/error.rs:56:28
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl convert::From<option::NoneError> for Error
[INFO] [stdout]    |                            ^^^^^^^^^ not found in `option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `option`
[INFO] [stdout]   --> src/error.rs:58:27
[INFO] [stdout]    |
[INFO] [stdout] 58 |   fn from(_error: option::NoneError) -> Self
[INFO] [stdout]    |                           ^^^^^^^^^ not found in `option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/serialize.rs:41:49
[INFO] [stdout]    |
[INFO] [stdout] 38 | /   fn next_char(&mut self) -> Result<char>
[INFO] [stdout] 39 | |   {
[INFO] [stdout] 40 | |     let ch = self.peek_char()?;
[INFO] [stdout] 41 | |     self.input = self.input.get(ch.len_utf8()..)?;
[INFO] [stdout]    | |                                                 ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<char, error::Error>`
[INFO] [stdout] 42 | |     Ok(ch)
[INFO] [stdout] 43 | |   }
[INFO] [stdout]    | |___- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `std::result::Result<char, error::Error>`
[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 method that returns `Result`
[INFO] [stdout]   --> src/serialize.rs:50:49
[INFO] [stdout]    |
[INFO] [stdout] 47 | /   fn parse_bool(&mut self) -> Result<bool>
[INFO] [stdout] 48 | |   {
[INFO] [stdout] 49 | |     if self.input.starts_with("yes") {
[INFO] [stdout] 50 | |       self.input = self.input.get("yes".len()..)?;
[INFO] [stdout]    | |                                                 ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<bool, error::Error>`
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |     }
[INFO] [stdout] 58 | |   }
[INFO] [stdout]    | |___- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `std::result::Result<bool, error::Error>`
[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 method that returns `Result`
[INFO] [stdout]   --> src/serialize.rs:53:48
[INFO] [stdout]    |
[INFO] [stdout] 47 | /   fn parse_bool(&mut self) -> Result<bool>
[INFO] [stdout] 48 | |   {
[INFO] [stdout] 49 | |     if self.input.starts_with("yes") {
[INFO] [stdout] 50 | |       self.input = self.input.get("yes".len()..)?;
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |       self.input = self.input.get("no".len()..)?;
[INFO] [stdout]    | |                                                ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<bool, error::Error>`
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |     }
[INFO] [stdout] 58 | |   }
[INFO] [stdout]    | |___- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `std::result::Result<bool, error::Error>`
[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 method that returns `Result`
[INFO] [stdout]   --> src/serialize.rs:74:43
[INFO] [stdout]    |
[INFO] [stdout] 61 | /   fn parse_unsigned<T>(&mut self) -> Result<T>
[INFO] [stdout] 62 | |     where T: AddAssign<T> + MulAssign<T> + From<u8>,
[INFO] [stdout] 63 | |   {
[INFO] [stdout] 64 | |     let mut int = match self.next_char()? {
[INFO] [stdout] ...  |
[INFO] [stdout] 74 | |           self.input = self.input.get(1..)?;
[INFO] [stdout]    | |                                           ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<T, error::Error>`
[INFO] [stdout] ...  |
[INFO] [stdout] 82 | |     }
[INFO] [stdout] 83 | |   }
[INFO] [stdout]    | |___- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `std::result::Result<T, error::Error>`
[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 method that returns `Result`
[INFO] [stdout]    --> src/serialize.rs:107:41
[INFO] [stdout]     |
[INFO] [stdout] 89  | /   fn parse_signed<T>(&mut self) -> Result<T>
[INFO] [stdout] 90  | |     where T: Neg<Output = T> + AddAssign<T> + MulAssign<T> + From<i8>,
[INFO] [stdout] 91  | |   {
[INFO] [stdout] 92  | |     let is_negative = self.peek_char()? == '-';
[INFO] [stdout] ...   |
[INFO] [stdout] 107 | |         self.input = self.input.get(1..)?;
[INFO] [stdout]     | |                                         ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<T, error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 116 | |     }
[INFO] [stdout] 117 | |   }
[INFO] [stdout]     | |___- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `std::result::Result<T, error::Error>`
[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 method that returns `Result`
[INFO] [stdout]   --> src/serialize.rs:41:49
[INFO] [stdout]    |
[INFO] [stdout] 38 | /   fn next_char(&mut self) -> Result<char>
[INFO] [stdout] 39 | |   {
[INFO] [stdout] 40 | |     let ch = self.peek_char()?;
[INFO] [stdout] 41 | |     self.input = self.input.get(ch.len_utf8()..)?;
[INFO] [stdout]    | |                                                 ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<char, error::Error>`
[INFO] [stdout] 42 | |     Ok(ch)
[INFO] [stdout] 43 | |   }
[INFO] [stdout]    | |___- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `std::result::Result<char, error::Error>`
[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 method that returns `Result`
[INFO] [stdout]   --> src/serialize.rs:50:49
[INFO] [stdout]    |
[INFO] [stdout] 47 | /   fn parse_bool(&mut self) -> Result<bool>
[INFO] [stdout] 48 | |   {
[INFO] [stdout] 49 | |     if self.input.starts_with("yes") {
[INFO] [stdout] 50 | |       self.input = self.input.get("yes".len()..)?;
[INFO] [stdout]    | |                                                 ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<bool, error::Error>`
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |     }
[INFO] [stdout] 58 | |   }
[INFO] [stdout]    | |___- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `std::result::Result<bool, error::Error>`
[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 method that returns `Result`
[INFO] [stdout]   --> src/serialize.rs:53:48
[INFO] [stdout]    |
[INFO] [stdout] 47 | /   fn parse_bool(&mut self) -> Result<bool>
[INFO] [stdout] 48 | |   {
[INFO] [stdout] 49 | |     if self.input.starts_with("yes") {
[INFO] [stdout] 50 | |       self.input = self.input.get("yes".len()..)?;
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |       self.input = self.input.get("no".len()..)?;
[INFO] [stdout]    | |                                                ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<bool, error::Error>`
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |     }
[INFO] [stdout] 58 | |   }
[INFO] [stdout]    | |___- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `std::result::Result<bool, error::Error>`
[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 method that returns `Result`
[INFO] [stdout]   --> src/serialize.rs:74:43
[INFO] [stdout]    |
[INFO] [stdout] 61 | /   fn parse_unsigned<T>(&mut self) -> Result<T>
[INFO] [stdout] 62 | |     where T: AddAssign<T> + MulAssign<T> + From<u8>,
[INFO] [stdout] 63 | |   {
[INFO] [stdout] 64 | |     let mut int = match self.next_char()? {
[INFO] [stdout] ...  |
[INFO] [stdout] 74 | |           self.input = self.input.get(1..)?;
[INFO] [stdout]    | |                                           ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<T, error::Error>`
[INFO] [stdout] ...  |
[INFO] [stdout] 82 | |     }
[INFO] [stdout] 83 | |   }
[INFO] [stdout]    | |___- this function returns a `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `std::result::Result<T, error::Error>`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0412.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/serialize.rs:107:41
[INFO] [stdout]     |
[INFO] [stdout] 89  | /   fn parse_signed<T>(&mut self) -> Result<T>
[INFO] [stdout] 90  | |     where T: Neg<Output = T> + AddAssign<T> + MulAssign<T> + From<i8>,
[INFO] [stdout] 91  | |   {
[INFO] [stdout] 92  | |     let is_negative = self.peek_char()? == '-';
[INFO] [stdout] ...   |
[INFO] [stdout] 107 | |         self.input = self.input.get(1..)?;
[INFO] [stdout]     | |                                         ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<T, error::Error>`
[INFO] [stdout] ...   |
[INFO] [stdout] 116 | |     }
[INFO] [stdout] 117 | |   }
[INFO] [stdout]     | |___- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `std::result::Result<T, error::Error>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0412.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `goff` due to 8 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "92c3dd1294ea44232ea71bfdcdb9d0575851608d2385a5ac783fb27cdc56b84d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92c3dd1294ea44232ea71bfdcdb9d0575851608d2385a5ac783fb27cdc56b84d", kill_on_drop: false }`
[INFO] [stdout] 92c3dd1294ea44232ea71bfdcdb9d0575851608d2385a5ac783fb27cdc56b84d