[INFO] fetching crate zoea 0.1.0...
[INFO] checking zoea-0.1.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate zoea 0.1.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate zoea 0.1.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zoea 0.1.0
[INFO] finished tweaking crates.io crate zoea 0.1.0
[INFO] tweaked toml for crates.io crate zoea 0.1.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b0f9ea073e644f5556dec78b7a4c72f9a651f8e21687ce814c47597bf0dfeed
[INFO] running `Command { std: "docker" "start" "-a" "8b0f9ea073e644f5556dec78b7a4c72f9a651f8e21687ce814c47597bf0dfeed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b0f9ea073e644f5556dec78b7a4c72f9a651f8e21687ce814c47597bf0dfeed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b0f9ea073e644f5556dec78b7a4c72f9a651f8e21687ce814c47597bf0dfeed", kill_on_drop: false }`
[INFO] [stdout] 8b0f9ea073e644f5556dec78b7a4c72f9a651f8e21687ce814c47597bf0dfeed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8074c3f02d3bb8cf0f92301ef6053b59d2b9b02f7ab8f34d62353e611d938d4
[INFO] running `Command { std: "docker" "start" "-a" "a8074c3f02d3bb8cf0f92301ef6053b59d2b9b02f7ab8f34d62353e611d938d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]     Checking seahash v4.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling sqlite3-src v0.2.12
[INFO] [stderr]     Checking porter-stemmer v0.1.2
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking sqlite3-sys v0.12.0
[INFO] [stderr]     Checking sqlite v0.25.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking simba v0.1.5
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking webpki-roots v0.21.1
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking nalgebra v0.21.1
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking ureq v2.1.1
[INFO] [stderr]     Checking rust-stemmers v1.2.0
[INFO] [stderr]     Checking zoea v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `keys`
[INFO] [stdout]   --> src/kv_database.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let keys = list_keys(&db);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_keys`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `non_value`
[INFO] [stdout]   --> src/kv_database.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let non_value = get(&db, &non_key); // returns String::new();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_non_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.50s
[INFO] running `Command { std: "docker" "inspect" "a8074c3f02d3bb8cf0f92301ef6053b59d2b9b02f7ab8f34d62353e611d938d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8074c3f02d3bb8cf0f92301ef6053b59d2b9b02f7ab8f34d62353e611d938d4", kill_on_drop: false }`
[INFO] [stdout] a8074c3f02d3bb8cf0f92301ef6053b59d2b9b02f7ab8f34d62353e611d938d4