[INFO] fetching crate tower-buffer 0.1.2...
[INFO] checking tower-buffer-0.1.2 against beta-2019-10-27 for pr-65897
[INFO] extracting crate tower-buffer 0.1.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate tower-buffer 0.1.2 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate tower-buffer 0.1.2
[INFO] finished tweaking crates.io crate tower-buffer 0.1.2
[INFO] tweaked toml for crates.io crate tower-buffer 0.1.2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=allow" "-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" "+beta-2019-10-27" "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] a3cec1d9dae194856c7ee21dba6c59d1e2d3d1d5d747a15a7300c39053f44f8e
[INFO] running `"docker" "start" "-a" "a3cec1d9dae194856c7ee21dba6c59d1e2d3d1d5d747a15a7300c39053f44f8e"`
[INFO] [stderr]     Checking tower-layer v0.1.0
[INFO] [stderr]     Checking tower-discover v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]     Checking tracing-core v0.1.7
[INFO] [stderr]     Checking tower-test v0.1.0
[INFO] [stderr]     Checking tower-timeout v0.1.1
[INFO] [stderr]     Checking tower-load-shed v0.1.0
[INFO] [stderr]     Checking tower-retry v0.1.0
[INFO] [stderr]     Checking tower-util v0.1.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.5
[INFO] [stderr]     Checking tracing v0.1.10
[INFO] [stderr]     Checking tower-limit v0.1.1
[INFO] [stderr]     Checking tower-buffer v0.1.2
[INFO] [stderr]     Checking tower-buffer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tower v0.1.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.61s
[INFO] running `"docker" "inspect" "a3cec1d9dae194856c7ee21dba6c59d1e2d3d1d5d747a15a7300c39053f44f8e"`
[INFO] running `"docker" "rm" "-f" "a3cec1d9dae194856c7ee21dba6c59d1e2d3d1d5d747a15a7300c39053f44f8e"`
[INFO] [stdout] a3cec1d9dae194856c7ee21dba6c59d1e2d3d1d5d747a15a7300c39053f44f8e