[INFO] fetching crate optargs 0.1.2...
[INFO] testing optargs-0.1.2 against 1.54.0 for beta-1.55-1
[INFO] extracting crate optargs 0.1.2 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate optargs 0.1.2 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 crates.io crate optargs 0.1.2
[INFO] finished tweaking crates.io crate optargs 0.1.2
[INFO] tweaked toml for crates.io crate optargs 0.1.2 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate optargs 0.1.2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 47b74c1bcfa1f004dc98fc47f3c481d5e7ff51ce91e1d7a83a29c00605965c46
[INFO] running `Command { std: "docker" "start" "-a" "47b74c1bcfa1f004dc98fc47f3c481d5e7ff51ce91e1d7a83a29c00605965c46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47b74c1bcfa1f004dc98fc47f3c481d5e7ff51ce91e1d7a83a29c00605965c46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47b74c1bcfa1f004dc98fc47f3c481d5e7ff51ce91e1d7a83a29c00605965c46", kill_on_drop: false }`
[INFO] [stdout] 47b74c1bcfa1f004dc98fc47f3c481d5e7ff51ce91e1d7a83a29c00605965c46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 8471bae4af1e405787dbae86daba07bdeae4eba80b75b7b2b6906046da940229
[INFO] running `Command { std: "docker" "start" "-a" "8471bae4af1e405787dbae86daba07bdeae4eba80b75b7b2b6906046da940229", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling optargs-macro v0.1.2
[INFO] [stderr]    Compiling optargs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized] target(s) in 11.21s
[INFO] running `Command { std: "docker" "inspect" "8471bae4af1e405787dbae86daba07bdeae4eba80b75b7b2b6906046da940229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8471bae4af1e405787dbae86daba07bdeae4eba80b75b7b2b6906046da940229", kill_on_drop: false }`
[INFO] [stdout] 8471bae4af1e405787dbae86daba07bdeae4eba80b75b7b2b6906046da940229
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9cf9776cf3b0bdaa872058235e4c24923d1744c8fae4c05abb01cbcad61ea20
[INFO] running `Command { std: "docker" "start" "-a" "a9cf9776cf3b0bdaa872058235e4c24923d1744c8fae4c05abb01cbcad61ea20", kill_on_drop: false }`
[INFO] [stderr]    Compiling optargs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> examples/optfn_reference.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn example(a: i32, b: Option<&str>) {}
[INFO] [stdout]   |            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> examples/optfn_reference.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn example(a: i32, b: Option<&str>) {}
[INFO] [stdout]   |                    ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `b`
[INFO] [stdout]   --> examples/optfn_reference.rs:22:48
[INFO] [stdout]    |
[INFO] [stdout] 22 |             impl<const A: bool> Validator<A> { fn b(self) -> Validator<A> { self  }}
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     example_src!(a: 10);
[INFO] [stdout]    |     -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `example_src` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ex`
[INFO] [stdout]  --> examples/optstruct_demo.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let ex = Example! {
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_ex`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]  --> examples/optstruct_demo.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     a: i32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]  --> examples/optstruct_demo.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     b: Option<String>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> examples/optstruct_reference.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let p = Example! { a: 10 };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> examples/optstruct_reference.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn build(mut self) -> bool {
[INFO] [stdout]   |              ----^^^^
[INFO] [stdout]   |              |
[INFO] [stdout]   |              help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]  --> examples/optstruct_reference.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     a: i32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]  --> examples/optstruct_reference.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     b: Option<&'static str>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build`
[INFO] [stdout]  --> examples/optstruct_reference.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn build(mut self) -> bool {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> examples/optfn_multiple_dyns.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn blah2(a: Option<&dyn Iterator<Item = i32>>) {}
[INFO] [stdout]   |          ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "a9cf9776cf3b0bdaa872058235e4c24923d1744c8fae4c05abb01cbcad61ea20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9cf9776cf3b0bdaa872058235e4c24923d1744c8fae4c05abb01cbcad61ea20", kill_on_drop: false }`
[INFO] [stdout] a9cf9776cf3b0bdaa872058235e4c24923d1744c8fae4c05abb01cbcad61ea20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f37fa67caac1f1fa1bd4f5447f8065f7c188276193d09f7b514c4d8a7257f2ea
[INFO] running `Command { std: "docker" "start" "-a" "f37fa67caac1f1fa1bd4f5447f8065f7c188276193d09f7b514c4d8a7257f2ea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]  --> examples/optfn_multiple_dyns.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn blah2(a: Option<&dyn Iterator<Item = i32>>) {}
[INFO] [stderr]   |          ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> examples/optstruct_reference.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let p = Example! { a: 10 };
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> examples/optstruct_reference.rs:8:14
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn build(mut self) -> bool {
[INFO] [stderr]   |              ----^^^^
[INFO] [stderr]   |              |
[INFO] [stderr]   |              help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `a`
[INFO] [stderr]  --> examples/optstruct_reference.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     a: i32,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `b`
[INFO] [stderr]  --> examples/optstruct_reference.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     b: Option<&'static str>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `build`
[INFO] [stderr]  --> examples/optstruct_reference.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn build(mut self) -> bool {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]  --> examples/optfn_reference.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn example(a: i32, b: Option<&str>) {}
[INFO] [stderr]   |            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]  --> examples/optfn_reference.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn example(a: i32, b: Option<&str>) {}
[INFO] [stderr]   |                    ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `b`
[INFO] [stderr]   --> examples/optfn_reference.rs:22:48
[INFO] [stderr]    |
[INFO] [stderr] 22 |             impl<const A: bool> Validator<A> { fn b(self) -> Validator<A> { self  }}
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 52 |     example_src!(a: 10);
[INFO] [stderr]    |     -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `example_src` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ex`
[INFO] [stderr]  --> examples/optstruct_demo.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let ex = Example! {
[INFO] [stderr]   |         ^^ help: if this is intentional, prefix it with an underscore: `_ex`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `a`
[INFO] [stderr]  --> examples/optstruct_demo.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     a: i32,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `b`
[INFO] [stderr]  --> examples/optstruct_demo.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     b: Option<String>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized] target(s) in 0.30s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/optargs-dce5142b073f8502)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests optargs
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - optfn (line 9) ... ignored
[INFO] [stdout] test src/lib.rs - OptStruct (line 36) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - OptStruct (line 36) stdout ----
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> src/lib.rs:41:19
[INFO] [stdout]   |
[INFO] [stdout] 8 |     title: Option<&str>,
[INFO] [stdout]   |                   ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Scatter<'a> {
[INFO] [stdout] 6 |     x: Vec<i32>,
[INFO] [stdout] 7 |     y: Option<Vec<i32>>,
[INFO] [stdout] 8 |     title: Option<&'a str>,
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> src/lib.rs:42:20
[INFO] [stdout]   |
[INFO] [stdout] 9 |     xlabel: Option<&str>,
[INFO] [stdout]   |                    ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Scatter<'a> {
[INFO] [stdout] 6 |     x: Vec<i32>,
[INFO] [stdout] 7 |     y: Option<Vec<i32>>,
[INFO] [stdout] 8 |     title: Option<&str>,
[INFO] [stdout] 9 |     xlabel: Option<&'a str>,
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/lib.rs:43:20
[INFO] [stdout]    |
[INFO] [stdout] 10 |     ylabel: Option<&str>,
[INFO] [stdout]    |                    ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub struct Scatter<'a> {
[INFO] [stdout] 6  |     x: Vec<i32>,
[INFO] [stdout] 7  |     y: Option<Vec<i32>>,
[INFO] [stdout] 8  |     title: Option<&str>,
[INFO] [stdout] 9  |     xlabel: Option<&str>,
[INFO] [stdout] 10 |     ylabel: Option<&'a str>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - OptStruct (line 36)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.14s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "f37fa67caac1f1fa1bd4f5447f8065f7c188276193d09f7b514c4d8a7257f2ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f37fa67caac1f1fa1bd4f5447f8065f7c188276193d09f7b514c4d8a7257f2ea", kill_on_drop: false }`
[INFO] [stdout] f37fa67caac1f1fa1bd4f5447f8065f7c188276193d09f7b514c4d8a7257f2ea
