[INFO] fetching crate korean_numbers 0.6.7...
[INFO] checking korean_numbers-0.6.7 against master#2a023bf80a6fbd6a06d5460a34eb247b986286ed for pr-143764
[INFO] extracting crate korean_numbers 0.6.7 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate korean_numbers 0.6.7
[INFO] finished tweaking crates.io crate korean_numbers 0.6.7
[INFO] tweaked toml for crates.io crate korean_numbers 0.6.7 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate korean_numbers 0.6.7 on toolchain 2a023bf80a6fbd6a06d5460a34eb247b986286ed
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2a023bf80a6fbd6a06d5460a34eb247b986286ed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2a023bf80a6fbd6a06d5460a34eb247b986286ed" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2a023bf80a6fbd6a06d5460a34eb247b986286ed" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2a023bf80a6fbd6a06d5460a34eb247b986286ed" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d67593add22babf597fb9ecf77e0c6343b451987b04db0bd3f4f4ca11f7c5c2
[INFO] running `Command { std: "docker" "start" "-a" "1d67593add22babf597fb9ecf77e0c6343b451987b04db0bd3f4f4ca11f7c5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d67593add22babf597fb9ecf77e0c6343b451987b04db0bd3f4f4ca11f7c5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d67593add22babf597fb9ecf77e0c6343b451987b04db0bd3f4f4ca11f7c5c2", kill_on_drop: false }`
[INFO] [stdout] 1d67593add22babf597fb9ecf77e0c6343b451987b04db0bd3f4f4ca11f7c5c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2a023bf80a6fbd6a06d5460a34eb247b986286ed" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57511a6808a51940c5dc5da7b2cd013c0836d6a001be4c3a728e4fad92ab10eb
[INFO] running `Command { std: "docker" "start" "-a" "57511a6808a51940c5dc5da7b2cd013c0836d6a001be4c3a728e4fad92ab10eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking korean_numbers v0.6.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Float`
[INFO] [stdout]  --> tests/test.rs:8:24
[INFO] [stdout]   |
[INFO] [stdout] 8 | use num::{pow, BigInt, Float};
[INFO] [stdout]   |                        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subject`
[INFO] [stdout]    --> tests/test.rs:368:10
[INFO] [stdout]     |
[INFO] [stdout] 368 |     for (subject, topic, c) in testcases {
[INFO] [stdout]     |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subject`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `topic`
[INFO] [stdout]    --> tests/test.rs:368:19
[INFO] [stdout]     |
[INFO] [stdout] 368 |     for (subject, topic, c) in testcases {
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_topic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> tests/test.rs:368:26
[INFO] [stdout]     |
[INFO] [stdout] 368 |     for (subject, topic, c) in testcases {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `testcases`
[INFO] [stdout]    --> tests/test.rs:378:9
[INFO] [stdout]     |
[INFO] [stdout] 378 |     let testcases = vec![
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_testcases`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `it_determines_vowels` is never used
[INFO] [stdout]    --> tests/test.rs:355:4
[INFO] [stdout]     |
[INFO] [stdout] 355 | fn it_determines_vowels() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `math_operators` is never used
[INFO] [stdout]    --> tests/test.rs:377:4
[INFO] [stdout]     |
[INFO] [stdout] 377 | fn math_operators() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.37s
[INFO] running `Command { std: "docker" "inspect" "57511a6808a51940c5dc5da7b2cd013c0836d6a001be4c3a728e4fad92ab10eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57511a6808a51940c5dc5da7b2cd013c0836d6a001be4c3a728e4fad92ab10eb", kill_on_drop: false }`
[INFO] [stdout] 57511a6808a51940c5dc5da7b2cd013c0836d6a001be4c3a728e4fad92ab10eb