[INFO] fetching crate grep_cdylib 0.1.3...
[INFO] testing grep_cdylib-0.1.3 against 1.90.0 for beta-1.91-3
[INFO] extracting crate grep_cdylib 0.1.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate grep_cdylib 0.1.3
[INFO] finished tweaking crates.io crate grep_cdylib 0.1.3
[INFO] tweaked toml for crates.io crate grep_cdylib 0.1.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate grep_cdylib 0.1.3 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 grep_cdylib 0.1.3 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libloading v0.7.3
[INFO] [stderr]   Downloaded anyhow v1.0.55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] dd38f994c64e203df51437385c9fa7a28a54e5951d5c9b306a198a4e6da348e3
[INFO] running `Command { std: "docker" "start" "-a" "dd38f994c64e203df51437385c9fa7a28a54e5951d5c9b306a198a4e6da348e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd38f994c64e203df51437385c9fa7a28a54e5951d5c9b306a198a4e6da348e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd38f994c64e203df51437385c9fa7a28a54e5951d5c9b306a198a4e6da348e3", kill_on_drop: false }`
[INFO] [stdout] dd38f994c64e203df51437385c9fa7a28a54e5951d5c9b306a198a4e6da348e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] fa7f05f2f6d80a4359b31b9bf6911c1c7037ab44b9f3117b5260666d3a123d01
[INFO] running `Command { std: "docker" "start" "-a" "fa7f05f2f6d80a4359b31b9bf6911c1c7037ab44b9f3117b5260666d3a123d01", kill_on_drop: false }`
[INFO] [stderr]    Compiling grep_cdylib v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "fa7f05f2f6d80a4359b31b9bf6911c1c7037ab44b9f3117b5260666d3a123d01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa7f05f2f6d80a4359b31b9bf6911c1c7037ab44b9f3117b5260666d3a123d01", kill_on_drop: false }`
[INFO] [stdout] fa7f05f2f6d80a4359b31b9bf6911c1c7037ab44b9f3117b5260666d3a123d01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d4218151b6922ff7f50d3f14907fe4a28477a2e479f352561aa7e6dc17aa7a2a
[INFO] running `Command { std: "docker" "start" "-a" "d4218151b6922ff7f50d3f14907fe4a28477a2e479f352561aa7e6dc17aa7a2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.55
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling grep_cdylib v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]   --> examples/grep_extern/main.rs:57:1
[INFO] [stdout]    |
[INFO] [stdout] 57 | mod lib;
[INFO] [stdout]    | ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: lib.rs is the root of this crate's library target
[INFO] [stdout]    = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]    = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Ok`, `BufferTooSmall`, and `End` are never constructed
[INFO] [stdout]   --> examples/grep_extern/interface.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub enum GetStrResult {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 10 |     Ok,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     BufferTooSmall,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 12 |     End,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `lib` is never read
[INFO] [stdout]  --> examples/grep_extern/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Lib {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 7 |     pub lib: Arc<Library>,
[INFO] [stdout]   |         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Lib` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "d4218151b6922ff7f50d3f14907fe4a28477a2e479f352561aa7e6dc17aa7a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4218151b6922ff7f50d3f14907fe4a28477a2e479f352561aa7e6dc17aa7a2a", kill_on_drop: false }`
[INFO] [stdout] d4218151b6922ff7f50d3f14907fe4a28477a2e479f352561aa7e6dc17aa7a2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 79b14b8e33ebf13428a91b942d5390568cc29a111ac1e640bae7e501a7a3f389
[INFO] running `Command { std: "docker" "start" "-a" "79b14b8e33ebf13428a91b942d5390568cc29a111ac1e640bae7e501a7a3f389", kill_on_drop: false }`
[INFO] [stderr] warning: found module declaration for lib.rs
[INFO] [stderr]   --> examples/grep_extern/main.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | mod lib;
[INFO] [stderr]    | ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: lib.rs is the root of this crate's library target
[INFO] [stderr]    = help: to refer to it from other targets, use the library's name as the path
[INFO] [stderr]    = note: `#[warn(special_module_name)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Ok`, `BufferTooSmall`, and `End` are never constructed
[INFO] [stderr]   --> examples/grep_extern/interface.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr]  9 | pub enum GetStrResult {
[INFO] [stderr]    |          ------------ variants in this enum
[INFO] [stderr] 10 |     Ok,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 11 |     BufferTooSmall,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 12 |     End,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `lib` is never read
[INFO] [stderr]  --> examples/grep_extern/lib.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Lib {
[INFO] [stderr]   |            --- field in this struct
[INFO] [stderr] 7 |     pub lib: Arc<Library>,
[INFO] [stderr]   |         ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Lib` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `grep_cdylib` (example "grep_extern") generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/grep_cdylib-4dd44c35c7153c0e)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::case_insensitive ... ok
[INFO] [stdout] test tests::case_sensitive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "79b14b8e33ebf13428a91b942d5390568cc29a111ac1e640bae7e501a7a3f389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79b14b8e33ebf13428a91b942d5390568cc29a111ac1e640bae7e501a7a3f389", kill_on_drop: false }`
[INFO] [stdout] 79b14b8e33ebf13428a91b942d5390568cc29a111ac1e640bae7e501a7a3f389