[INFO] fetching crate yht_test_lib 0.2.0...
[INFO] checking yht_test_lib-0.2.0 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate yht_test_lib 0.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate yht_test_lib 0.2.0 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yht_test_lib 0.2.0
[INFO] finished tweaking crates.io crate yht_test_lib 0.2.0
[INFO] tweaked toml for crates.io crate yht_test_lib 0.2.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bab8d8aa270caeac24be6b963a27969d29db5a76af2e2311e13542ed5bc7fabc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bab8d8aa270caeac24be6b963a27969d29db5a76af2e2311e13542ed5bc7fabc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bab8d8aa270caeac24be6b963a27969d29db5a76af2e2311e13542ed5bc7fabc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bab8d8aa270caeac24be6b963a27969d29db5a76af2e2311e13542ed5bc7fabc", kill_on_drop: false }`
[INFO] [stdout] bab8d8aa270caeac24be6b963a27969d29db5a76af2e2311e13542ed5bc7fabc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 33a3b1ba96d1ddde0dbbebb8bdde947e644052c578f968b8421e43010e8713bd
[INFO] running `Command { std: "docker" "start" "-a" "33a3b1ba96d1ddde0dbbebb8bdde947e644052c578f968b8421e43010e8713bd", kill_on_drop: false }`
[INFO] [stderr]     Checking yht_test_lib v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `private_add`
[INFO] [stdout]  --> src/lib.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn private_add(a: i32, b: i32) -> i32 {
[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] [stdout] warning: function is never used: `private_add`
[INFO] [stdout]  --> src/lib.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn private_add(a: i32, b: i32) -> i32 {
[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 dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "33a3b1ba96d1ddde0dbbebb8bdde947e644052c578f968b8421e43010e8713bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33a3b1ba96d1ddde0dbbebb8bdde947e644052c578f968b8421e43010e8713bd", kill_on_drop: false }`
[INFO] [stdout] 33a3b1ba96d1ddde0dbbebb8bdde947e644052c578f968b8421e43010e8713bd