[INFO] fetching crate skyway 0.7.1...
[INFO] checking skyway-0.7.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate skyway 0.7.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate skyway 0.7.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate skyway 0.7.1
[INFO] tweaked toml for crates.io crate skyway 0.7.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate skyway 0.7.1 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 skyway 0.7.1 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b9992a3ec7a2a75a7aabc7857626e672e13c47c5c717b8bbf59b94eb8a3a50b4
[INFO] running `Command { std: "docker" "start" "-a" "b9992a3ec7a2a75a7aabc7857626e672e13c47c5c717b8bbf59b94eb8a3a50b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9992a3ec7a2a75a7aabc7857626e672e13c47c5c717b8bbf59b94eb8a3a50b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9992a3ec7a2a75a7aabc7857626e672e13c47c5c717b8bbf59b94eb8a3a50b4", kill_on_drop: false }`
[INFO] [stdout] b9992a3ec7a2a75a7aabc7857626e672e13c47c5c717b8bbf59b94eb8a3a50b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 6fd108882dc2e45154bb476d9afeb86f1be0870843886dabbd664602e6f0c549
[INFO] running `Command { std: "docker" "start" "-a" "6fd108882dc2e45154bb476d9afeb86f1be0870843886dabbd664602e6f0c549", kill_on_drop: false }`
[INFO] [stderr]    Compiling aho-corasick v1.1.3
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[INFO] [stderr]     Checking skyway v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]   --> src/readers/xml.rs:32:44
[INFO] [stdout]    |
[INFO] [stdout] 32 |             XmlReadError::MissingAttribute(attr) => SkywayError::InvalidInputFile,
[INFO] [stdout]    |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_attr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/readers/xml.rs:39:40
[INFO] [stdout]    |
[INFO] [stdout] 39 |             XmlReadError::ParsingError(msg) => SkywayError::InvalidInputFile,
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]   --> src/readers/xml.rs:40:45
[INFO] [stdout]    |
[INFO] [stdout] 40 |             XmlReadError::UnexpectedElement(elem) => SkywayError::InvalidInputFile,
[INFO] [stdout]    |                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]   --> src/readers/xml.rs:32:44
[INFO] [stdout]    |
[INFO] [stdout] 32 |             XmlReadError::MissingAttribute(attr) => SkywayError::InvalidInputFile,
[INFO] [stdout]    |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_attr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/readers/xml.rs:39:40
[INFO] [stdout]    |
[INFO] [stdout] 39 |             XmlReadError::ParsingError(msg) => SkywayError::InvalidInputFile,
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]   --> src/readers/xml.rs:40:45
[INFO] [stdout]    |
[INFO] [stdout] 40 |             XmlReadError::UnexpectedElement(elem) => SkywayError::InvalidInputFile,
[INFO] [stdout]    |                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `InvalidAttributeValue` and `UnexpectedElement` are never constructed
[INFO] [stdout]   --> src/readers/xml.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum XmlReadError {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 23 |     MissingAttribute(String),
[INFO] [stdout] 24 |     InvalidAttributeValue { attr: String, value: String },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     ParsingError(String),
[INFO] [stdout] 26 |     UnexpectedElement(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `XmlReadError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/readers/xml.rs:148:29
[INFO] [stdout]     |
[INFO] [stdout] 148 |                 b"k" => k = attr_value_to_str(attr.value.as_ref())?.parse().ok(),
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/readers/xml.rs:149:29
[INFO] [stdout]     |
[INFO] [stdout] 149 |                 b"v" => v = attr_value_to_str(attr.value.as_ref())?.parse().ok(),
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `skyway` (lib) due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variants `InvalidAttributeValue` and `UnexpectedElement` are never constructed
[INFO] [stdout]   --> src/readers/xml.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum XmlReadError {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 23 |     MissingAttribute(String),
[INFO] [stdout] 24 |     InvalidAttributeValue { attr: String, value: String },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     ParsingError(String),
[INFO] [stdout] 26 |     UnexpectedElement(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `XmlReadError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/readers/xml.rs:148:29
[INFO] [stdout]     |
[INFO] [stdout] 148 |                 b"k" => k = attr_value_to_str(attr.value.as_ref())?.parse().ok(),
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/readers/xml.rs:149:29
[INFO] [stdout]     |
[INFO] [stdout] 149 |                 b"v" => v = attr_value_to_str(attr.value.as_ref())?.parse().ok(),
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `skyway` (lib test) due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "6fd108882dc2e45154bb476d9afeb86f1be0870843886dabbd664602e6f0c549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fd108882dc2e45154bb476d9afeb86f1be0870843886dabbd664602e6f0c549", kill_on_drop: false }`
[INFO] [stdout] 6fd108882dc2e45154bb476d9afeb86f1be0870843886dabbd664602e6f0c549
