[INFO] fetching crate rust-closures-examples 0.1.0...
[INFO] testing rust-closures-examples-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate rust-closures-examples 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rust-closures-examples 0.1.0
[INFO] finished tweaking crates.io crate rust-closures-examples 0.1.0
[INFO] tweaked toml for crates.io crate rust-closures-examples 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-closures-examples 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rust-closures-examples 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5fe4b4d69309e27bbc20c71afe31b97f6f874a07a22c155dcc01567663dc5d1
[INFO] running `Command { std: "docker" "start" "-a" "f5fe4b4d69309e27bbc20c71afe31b97f6f874a07a22c155dcc01567663dc5d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5fe4b4d69309e27bbc20c71afe31b97f6f874a07a22c155dcc01567663dc5d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5fe4b4d69309e27bbc20c71afe31b97f6f874a07a22c155dcc01567663dc5d1", kill_on_drop: false }`
[INFO] [stdout] f5fe4b4d69309e27bbc20c71afe31b97f6f874a07a22c155dcc01567663dc5d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4ca5788a0185900c484a6ecf1e6f9ae8651aa42274224f12ab01f5e97dbb92e
[INFO] running `Command { std: "docker" "start" "-a" "b4ca5788a0185900c484a6ecf1e6f9ae8651aa42274224f12ab01f5e97dbb92e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-closures-examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn mix(c1: PrimaryColor, c2: SecondryColor) -> SecondryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ShirtColor` is never used
[INFO] [stdout]  --> src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum ShirtColor {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Inventory` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Inventory {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `giveaway` and `most_stocked` are never used
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Inventory {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 16 |     fn giveaway(&self, user_preference: Option<ShirtColor>) -> ShirtColor {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn most_stocked(&self) -> ShirtColor {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Option` is never used
[INFO] [stdout]    --> src/main.rs:130:6
[INFO] [stdout]     |
[INFO] [stdout] 130 | enum Option<T> {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `unwrap_or_else` is never used
[INFO] [stdout]    --> src/main.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 135 | impl<T> Option<T> {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] 136 |     fn unwrap_or_else<F>(self, f: F) -> T
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `height` is never read
[INFO] [stdout]    --> src/main.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 148 | struct Rectangle {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 149 |     width: u32,
[INFO] [stdout] 150 |     height: u32,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "b4ca5788a0185900c484a6ecf1e6f9ae8651aa42274224f12ab01f5e97dbb92e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4ca5788a0185900c484a6ecf1e6f9ae8651aa42274224f12ab01f5e97dbb92e", kill_on_drop: false }`
[INFO] [stdout] b4ca5788a0185900c484a6ecf1e6f9ae8651aa42274224f12ab01f5e97dbb92e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b60d4d31e55ae54a793b9d06c395a29ba4d635ab5fc6eb42b59587c3015991b4
[INFO] running `Command { std: "docker" "start" "-a" "b60d4d31e55ae54a793b9d06c395a29ba4d635ab5fc6eb42b59587c3015991b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-closures-examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn mix(c1: PrimaryColor, c2: SecondryColor) -> SecondryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn mix(c1: PrimaryColor, c2: SecondryColor) -> SecondryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ShirtColor` is never used
[INFO] [stdout]  --> src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum ShirtColor {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Inventory` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Inventory {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `giveaway` and `most_stocked` are never used
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Inventory {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 16 |     fn giveaway(&self, user_preference: Option<ShirtColor>) -> ShirtColor {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn most_stocked(&self) -> ShirtColor {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Option` is never used
[INFO] [stdout]    --> src/main.rs:130:6
[INFO] [stdout]     |
[INFO] [stdout] 130 | enum Option<T> {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `unwrap_or_else` is never used
[INFO] [stdout]    --> src/main.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 135 | impl<T> Option<T> {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] 136 |     fn unwrap_or_else<F>(self, f: F) -> T
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `height` is never read
[INFO] [stdout]    --> src/main.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 148 | struct Rectangle {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 149 |     width: u32,
[INFO] [stdout] 150 |     height: u32,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "b60d4d31e55ae54a793b9d06c395a29ba4d635ab5fc6eb42b59587c3015991b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b60d4d31e55ae54a793b9d06c395a29ba4d635ab5fc6eb42b59587c3015991b4", kill_on_drop: false }`
[INFO] [stdout] b60d4d31e55ae54a793b9d06c395a29ba4d635ab5fc6eb42b59587c3015991b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ae192191ca78abb523f0912fc5847197d4c4ddd9dfd229751b7a0d53a65623f0
[INFO] running `Command { std: "docker" "start" "-a" "ae192191ca78abb523f0912fc5847197d4c4ddd9dfd229751b7a0d53a65623f0", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `c1`
[INFO] [stderr]   --> src/lib.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn mix(c1: PrimaryColor, c2: SecondryColor) -> SecondryColor {
[INFO] [stderr]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-closures-examples` (lib) generated 1 warning
[INFO] [stderr] warning: enum `ShirtColor` is never used
[INFO] [stderr]  --> src/main.rs:6:6
[INFO] [stderr]   |
[INFO] [stderr] 6 | enum ShirtColor {
[INFO] [stderr]   |      ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Inventory` is never constructed
[INFO] [stderr]   --> src/main.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct Inventory {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `giveaway` and `most_stocked` are never used
[INFO] [stderr]   --> src/main.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | impl Inventory {
[INFO] [stderr]    | -------------- methods in this implementation
[INFO] [stderr] 16 |     fn giveaway(&self, user_preference: Option<ShirtColor>) -> ShirtColor {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 20 |     fn most_stocked(&self) -> ShirtColor {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Option` is never used
[INFO] [stderr]    --> src/main.rs:130:6
[INFO] [stderr]     |
[INFO] [stderr] 130 | enum Option<T> {
[INFO] [stderr]     |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `unwrap_or_else` is never used
[INFO] [stderr]    --> src/main.rs:136:8
[INFO] [stderr]     |
[INFO] [stderr] 135 | impl<T> Option<T> {
[INFO] [stderr]     | ----------------- method in this implementation
[INFO] [stderr] 136 |     fn unwrap_or_else<F>(self, f: F) -> T
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `height` is never read
[INFO] [stderr]    --> src/main.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 148 | struct Rectangle {
[INFO] [stderr]     |        --------- field in this struct
[INFO] [stderr] 149 |     width: u32,
[INFO] [stderr] 150 |     height: u32,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-closures-examples` (bin "rust-closures-examples" test) generated 6 warnings
[INFO] [stderr] warning: `rust-closures-examples` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_closures_examples-ecc74de7196f1c0c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_closures_examples-bc02f78335997892)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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] [stderr]    Doc-tests rust_closures_examples
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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] running `Command { std: "docker" "inspect" "ae192191ca78abb523f0912fc5847197d4c4ddd9dfd229751b7a0d53a65623f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae192191ca78abb523f0912fc5847197d4c4ddd9dfd229751b7a0d53a65623f0", kill_on_drop: false }`
[INFO] [stdout] ae192191ca78abb523f0912fc5847197d4c4ddd9dfd229751b7a0d53a65623f0