[INFO] cloning repository https://github.com/hicqu/tower-grpc-learn
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hicqu/tower-grpc-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhicqu%2Ftower-grpc-learn"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhicqu%2Ftower-grpc-learn'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 56130161e362d33ed9c66cad873a3260ead2a3f9
[INFO] checking hicqu/tower-grpc-learn against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhicqu%2Ftower-grpc-learn" "/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/hicqu/tower-grpc-learn on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/hicqu/tower-grpc-learn
[INFO] finished tweaking git repo https://github.com/hicqu/tower-grpc-learn
[INFO] tweaked toml for git repo https://github.com/hicqu/tower-grpc-learn written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/hicqu/tower-grpc-learn already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 9c1fd02b06fc4ae8d0958f5a5841adb6eed8dda3612292a6a53616b5ba8499bc
[INFO] running `"docker" "start" "-a" "9c1fd02b06fc4ae8d0958f5a5841adb6eed8dda3612292a6a53616b5ba8499bc"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling rustc-demangle v0.1.14
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]     Checking multimap v0.4.0
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]    Compiling backtrace v0.3.18
[INFO] [stderr]     Checking tower-service v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking tokio-sync v0.1.5
[INFO] [stderr]     Checking tokio-trace-core v0.1.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking codegen v0.1.1
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking tower-layer v0.1.0
[INFO] [stderr]     Checking regex v1.1.6
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking tempfile v3.0.8
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking heck v0.3.1
[INFO] [stderr]     Checking tower-util v0.1.0
[INFO] [stderr]     Checking mio v0.6.17
[INFO] [stderr]     Checking tokio-executor v0.1.7
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.14
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]    Compiling prost-build v0.5.0
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.20
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking h2 v0.1.20
[INFO] [stderr]     Checking http-connection v0.1.0 (https://github.com/hyperium/http-connection#351d472c)
[INFO] [stderr]     Checking tower-request-modifier v0.1.0 (https://github.com/tower-rs/tower-http#044e0ed5)
[INFO] [stderr]     Checking tower-http-util v0.1.0 (https://github.com/tower-rs/tower-http#044e0ed5)
[INFO] [stderr]     Checking hyper v0.12.29
[INFO] [stderr]    Compiling prost-derive v0.5.0
[INFO] [stderr]     Checking tower-hyper v0.1.0 (https://github.com/tower-rs/tower-hyper#2eea4b53)
[INFO] [stderr]     Checking prost v0.5.0
[INFO] [stderr]     Checking prost-types v0.5.0
[INFO] [stderr]     Checking tower-grpc v0.1.1 (https://github.com/tower-rs/tower-grpc#5308ec0d)
[INFO] [stderr]     Checking tower-grpc-build v0.1.0 (https://github.com/tower-rs/tower-grpc#5308ec0d)
[INFO] [stderr]     Checking tower-grpc-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `"docker" "inspect" "9c1fd02b06fc4ae8d0958f5a5841adb6eed8dda3612292a6a53616b5ba8499bc"`
[INFO] running `"docker" "rm" "-f" "9c1fd02b06fc4ae8d0958f5a5841adb6eed8dda3612292a6a53616b5ba8499bc"`
[INFO] [stdout] 9c1fd02b06fc4ae8d0958f5a5841adb6eed8dda3612292a6a53616b5ba8499bc