[INFO] updating cached repository https://github.com/g-s-k/blah
[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] d079b2403d13c83f178d793c856eb94399820d41
[INFO] testing g-s-k/blah against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fg-s-k%2Fblah" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/g-s-k/blah on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/g-s-k/blah
[INFO] finished tweaking git repo https://github.com/g-s-k/blah
[INFO] tweaked toml for git repo https://github.com/g-s-k/blah written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/g-s-k/blah already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] 74ae13fe985655edb1024f786c499b52860b30bc64239670fcdc453f49dcd606
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "74ae13fe985655edb1024f786c499b52860b30bc64239670fcdc453f49dcd606"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling futures v0.1.26
[INFO] [stderr]    Compiling syn v0.15.30
[INFO] [stderr]    Compiling crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling block-padding v0.1.3
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling mime v0.3.13
[INFO] [stderr]    Compiling block-buffer v0.7.0
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling sha-1 v0.8.1
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling http v0.1.17
[INFO] [stderr]    Compiling input_buffer v0.2.0
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling tungstenite v0.6.1
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling tokio-executor v0.1.7
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling tokio-sync v0.1.4
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling tokio-threadpool v0.1.13
[INFO] [stderr]    Compiling tokio-timer v0.2.10
[INFO] [stderr]    Compiling tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio v0.1.18
[INFO] [stderr]    Compiling h2 v0.1.18
[INFO] [stderr]    Compiling headers-core v0.1.0
[INFO] [stderr]    Compiling headers-derive v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling headers v0.2.1
[INFO] [stderr]    Compiling hyper v0.12.27
[INFO] [stderr]    Compiling warp v0.1.15
[INFO] [stderr]    Compiling blah v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0283]: type annotations needed for `std::string::String`
[INFO] [stderr]    --> src/main.rs:122:35
[INFO] [stderr]     |
[INFO] [stderr] 120 |         let msg_str = serde_json::to_string(&new_msg).expect("could not serialize message");
[INFO] [stderr]     |             ------- consider giving `msg_str` a type
[INFO] [stderr] 121 | 
[INFO] [stderr] 122 |         ws::Message::text(msg_str.as_ref())
[INFO] [stderr]     |                                   ^^^^^^ cannot infer type for struct `std::string::String`
[INFO] [stderr]     |
[INFO] [stderr]     = note: cannot satisfy `std::string::String: std::convert::AsRef<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: could not compile `blah`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "74ae13fe985655edb1024f786c499b52860b30bc64239670fcdc453f49dcd606"`
[INFO] running `"docker" "rm" "-f" "74ae13fe985655edb1024f786c499b52860b30bc64239670fcdc453f49dcd606"`
[INFO] [stdout] 74ae13fe985655edb1024f786c499b52860b30bc64239670fcdc453f49dcd606