[INFO] updating cached repository https://github.com/koto-bank/kocaptcha
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d3d34e388436ab509636cf02b8b7296ae92de951
[INFO] checking koto-bank/kocaptcha against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoto-bank%2Fkocaptcha" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/koto-bank/kocaptcha on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/koto-bank/kocaptcha
[INFO] finished tweaking git repo https://github.com/koto-bank/kocaptcha
[INFO] tweaked toml for git repo https://github.com/koto-bank/kocaptcha written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/koto-bank/kocaptcha already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 62bf9c948b72cffc3c2b4d660e22dd0bee5a14f5b43e1bce438714c1bdc2321a
[INFO] running `"docker" "start" "-a" "62bf9c948b72cffc3c2b4d660e22dd0bee5a14f5b43e1bce438714c1bdc2321a"`
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]     Checking assert_approx_eq v1.0.0
[INFO] [stderr]    Compiling actix-web v0.7.16
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.7
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking signal-hook v0.1.6
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking rusttype v0.7.3
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking resolv-conf v0.6.1
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking parking_lot v0.7.0
[INFO] [stderr]     Checking quickcheck v0.6.2
[INFO] [stderr]    Compiling cmake v0.1.35
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]     Checking flate2 v1.0.6
[INFO] [stderr]     Checking backtrace v0.3.13
[INFO] [stderr]     Checking font-loader v0.7.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]    Compiling actix_derive v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking trust-dns-proto v0.6.1
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking trust-dns-resolver v0.10.1
[INFO] [stderr]     Checking actix v0.7.9
[INFO] [stderr]     Checking imageproc v0.17.0
[INFO] [stderr]     Checking actix-net v0.2.5
[INFO] [stderr]     Checking kocaptcha v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: static variable `captchas_generated` should have an upper case name
[INFO] [stderr]  --> src/generated_captchas_stat.rs:4:16
[INFO] [stderr]   |
[INFO] [stderr] 4 |     static ref captchas_generated: RwLock<i64> = RwLock::new(0);
[INFO] [stderr]   |                ^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `CAPTCHAS_GENERATED`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `captchas_generated` should have an upper case name
[INFO] [stderr]  --> src/generated_captchas_stat.rs:4:16
[INFO] [stderr]   |
[INFO] [stderr] 4 |     static ref captchas_generated: RwLock<i64> = RwLock::new(0);
[INFO] [stderr]   |                ^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `CAPTCHAS_GENERATED`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 04s
[INFO] running `"docker" "inspect" "62bf9c948b72cffc3c2b4d660e22dd0bee5a14f5b43e1bce438714c1bdc2321a"`
[INFO] running `"docker" "rm" "-f" "62bf9c948b72cffc3c2b4d660e22dd0bee5a14f5b43e1bce438714c1bdc2321a"`
[INFO] [stdout] 62bf9c948b72cffc3c2b4d660e22dd0bee5a14f5b43e1bce438714c1bdc2321a