[INFO] fetching crate rust_stringz 1.0.0...
[INFO] checking rust_stringz-1.0.0 against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] extracting crate rust_stringz 1.0.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate rust_stringz 1.0.0 on toolchain 901e6d56697c79b2e80df6a487b2318ec6f57ee3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust_stringz 1.0.0
[INFO] finished tweaking crates.io crate rust_stringz 1.0.0
[INFO] tweaked toml for crates.io crate rust_stringz 1.0.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04ce64d641cfa9fff87728b607c5bfa6030fba2d98cdfd52b22ad4d44a3b8828
[INFO] running `Command { std: "docker" "start" "-a" "04ce64d641cfa9fff87728b607c5bfa6030fba2d98cdfd52b22ad4d44a3b8828", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04ce64d641cfa9fff87728b607c5bfa6030fba2d98cdfd52b22ad4d44a3b8828", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04ce64d641cfa9fff87728b607c5bfa6030fba2d98cdfd52b22ad4d44a3b8828", kill_on_drop: false }`
[INFO] [stdout] 04ce64d641cfa9fff87728b607c5bfa6030fba2d98cdfd52b22ad4d44a3b8828
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2abf94716c344d52c76fe5294127aa087a43c2108aff8585e449d5980aad2cce
[INFO] running `Command { std: "docker" "start" "-a" "2abf94716c344d52c76fe5294127aa087a43c2108aff8585e449d5980aad2cce", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_stringz v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::count_occurrences`
[INFO] [stdout]   --> src/count_occurrences.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     use super::count_occurrences;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::is_palindrome`
[INFO] [stdout]   --> src/is_palindrome.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     use super::is_palindrome;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::to_lowercase`
[INFO] [stdout]  --> src/to_lowercase.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use super::to_lowercase;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::to_uppercase`
[INFO] [stdout]  --> src/to_uppercase.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use super::to_uppercase;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "2abf94716c344d52c76fe5294127aa087a43c2108aff8585e449d5980aad2cce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2abf94716c344d52c76fe5294127aa087a43c2108aff8585e449d5980aad2cce", kill_on_drop: false }`
[INFO] [stdout] 2abf94716c344d52c76fe5294127aa087a43c2108aff8585e449d5980aad2cce