[INFO] fetching crate hello_closures 0.1.0...
[INFO] testing hello_closures-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate hello_closures 0.1.0 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate hello_closures 0.1.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hello_closures 0.1.0
[INFO] finished tweaking crates.io crate hello_closures 0.1.0
[INFO] tweaked toml for crates.io crate hello_closures 0.1.0 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate crates.io crate hello_closures 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8f04048e675324b97230ff1f14965542bdc9a6830acfcd5f6c0ec9414e2cff3
[INFO] running `Command { std: "docker" "start" "-a" "d8f04048e675324b97230ff1f14965542bdc9a6830acfcd5f6c0ec9414e2cff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8f04048e675324b97230ff1f14965542bdc9a6830acfcd5f6c0ec9414e2cff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8f04048e675324b97230ff1f14965542bdc9a6830acfcd5f6c0ec9414e2cff3", kill_on_drop: false }`
[INFO] [stdout] d8f04048e675324b97230ff1f14965542bdc9a6830acfcd5f6c0ec9414e2cff3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 428edd260fc36439ea2b3ee021711534e91248fcf56adf4ce1d6f7af6f402ace
[INFO] running `Command { std: "docker" "start" "-a" "428edd260fc36439ea2b3ee021711534e91248fcf56adf4ce1d6f7af6f402ace", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_closures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/lib.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn simulated_expensive_calculation(num: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shoes_in_my_size`
[INFO] [stdout]   --> src/lib.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn new() -> Counter {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "428edd260fc36439ea2b3ee021711534e91248fcf56adf4ce1d6f7af6f402ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "428edd260fc36439ea2b3ee021711534e91248fcf56adf4ce1d6f7af6f402ace", kill_on_drop: false }`
[INFO] [stdout] 428edd260fc36439ea2b3ee021711534e91248fcf56adf4ce1d6f7af6f402ace
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6638a0df2dfd64b37f53df3a02d131ec9cf3f4b60b6335d0db5b4fd94e1eac1c
[INFO] running `Command { std: "docker" "start" "-a" "6638a0df2dfd64b37f53df3a02d131ec9cf3f4b60b6335d0db5b4fd94e1eac1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_closures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/lib.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn simulated_expensive_calculation(num: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shoes_in_my_size`
[INFO] [stdout]   --> src/lib.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn new() -> Counter {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/lib.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn simulated_expensive_calculation(num: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/hello_closures-b546cad011107f7b)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/hello_closures-09d6c6f8289a50f9)
[INFO] running `Command { std: "docker" "inspect" "6638a0df2dfd64b37f53df3a02d131ec9cf3f4b60b6335d0db5b4fd94e1eac1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6638a0df2dfd64b37f53df3a02d131ec9cf3f4b60b6335d0db5b4fd94e1eac1c", kill_on_drop: false }`
[INFO] [stdout] 6638a0df2dfd64b37f53df3a02d131ec9cf3f4b60b6335d0db5b4fd94e1eac1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6dea8cb07a8b03ffbcf209c35525a39acfa3c3cfc2b967c5cdef2fee60d58e7b
[INFO] running `Command { std: "docker" "start" "-a" "6dea8cb07a8b03ffbcf209c35525a39acfa3c3cfc2b967c5cdef2fee60d58e7b", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stderr]  --> src/lib.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn simulated_expensive_calculation(num: u32) -> u32 {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shoes_in_my_size`
[INFO] [stderr]   --> src/lib.rs:85:4
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/lib.rs:115:8
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn new() -> Counter {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello_closures` (lib) generated 3 warnings
[INFO] [stderr] warning: `hello_closures` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/hello_closures-b546cad011107f7b)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test calling_next_directly ... ok
[INFO] [stdout] test filters_by_size ... ok
[INFO] [stdout] test iterator_demonstration ... ok
[INFO] [stdout] test iterator_sum ... ok
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/hello_closures-09d6c6f8289a50f9)
[INFO] [stdout] test using_other_iterator_trait_methods ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests hello_closures
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - search (line 156) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6dea8cb07a8b03ffbcf209c35525a39acfa3c3cfc2b967c5cdef2fee60d58e7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dea8cb07a8b03ffbcf209c35525a39acfa3c3cfc2b967c5cdef2fee60d58e7b", kill_on_drop: false }`
[INFO] [stdout] 6dea8cb07a8b03ffbcf209c35525a39acfa3c3cfc2b967c5cdef2fee60d58e7b