[INFO] cloning repository https://github.com/zbuc/rust_tower_defense
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zbuc/rust_tower_defense" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzbuc%2Frust_tower_defense", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzbuc%2Frust_tower_defense'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 176726b20e5e21953d8eb9f9424d243dfa8c89d0
[INFO] testing zbuc/rust_tower_defense against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzbuc%2Frust_tower_defense" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zbuc/rust_tower_defense on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zbuc/rust_tower_defense
[INFO] finished tweaking git repo https://github.com/zbuc/rust_tower_defense
[INFO] tweaked toml for git repo https://github.com/zbuc/rust_tower_defense written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/zbuc/rust_tower_defense already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e723399e9022041678104f93287d5e7e65f0cbc4886af5a9bac666da362287da
[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" "e723399e9022041678104f93287d5e7e65f0cbc4886af5a9bac666da362287da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e723399e9022041678104f93287d5e7e65f0cbc4886af5a9bac666da362287da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e723399e9022041678104f93287d5e7e65f0cbc4886af5a9bac666da362287da", kill_on_drop: false }`
[INFO] [stdout] e723399e9022041678104f93287d5e7e65f0cbc4886af5a9bac666da362287da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b4d88292ea187ba75caf7cb71640a766074fee248c65999e8a481b395f66192
[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" "3b4d88292ea187ba75caf7cb71640a766074fee248c65999e8a481b395f66192", 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] [stderr]    Compiling vulkano v0.11.1
[INFO] [stderr]    Compiling vk-sys v0.4.0
[INFO] [stderr]    Compiling half v1.3.0
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling cmake v0.1.35
[INFO] [stderr]    Compiling bincode v1.1.1
[INFO] [stderr]    Compiling smallvec v0.6.8
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling approx v0.3.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling ordered-float v1.0.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling rusttype v0.7.5
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling tempfile v3.0.6
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling shaderc v0.3.16
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling andrew v0.1.6
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling glsl-to-spirv v0.1.7
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling dlib v0.4.1
[INFO] [stderr]    Compiling crossbeam v0.5.0
[INFO] [stderr]    Compiling wayland-sys v0.21.11
[INFO] [stderr]    Compiling env_logger v0.6.0
[INFO] [stderr] error: could not compile `regex`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-1.1.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="use_std"' -C metadata=41fdbb2fff2ea1d9 -C extra-filename=-41fdbb2fff2ea1d9 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern aho_corasick=/opt/rustwide/target/debug/deps/libaho_corasick-7644bcbcfa126e98.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-9897b9d4c9d82e17.rmeta --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-994f7fc548874e35.rmeta --extern thread_local=/opt/rustwide/target/debug/deps/libthread_local-21d2226dcef1caef.rmeta --extern utf8_ranges=/opt/rustwide/target/debug/deps/libutf8_ranges-61b5cbc5e318c573.rmeta --cap-lints allow --cap-lints=warn --cfg regex_runtime_teddy_ssse3 --cfg regex_runtime_teddy_avx2` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3b4d88292ea187ba75caf7cb71640a766074fee248c65999e8a481b395f66192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4d88292ea187ba75caf7cb71640a766074fee248c65999e8a481b395f66192", kill_on_drop: false }`
[INFO] [stdout] 3b4d88292ea187ba75caf7cb71640a766074fee248c65999e8a481b395f66192