[INFO] updating cached repository https://github.com/JohnDoneth/tokio-sync-bug
[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] 2124b2d3dde6118c451b77a739499087150a9eab
[INFO] checking JohnDoneth/tokio-sync-bug against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohnDoneth%2Ftokio-sync-bug" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JohnDoneth/tokio-sync-bug on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/JohnDoneth/tokio-sync-bug
[INFO] finished tweaking git repo https://github.com/JohnDoneth/tokio-sync-bug
[INFO] tweaked toml for git repo https://github.com/JohnDoneth/tokio-sync-bug written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/JohnDoneth/tokio-sync-bug already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] 20cd623e3a8124ef4cfe9c7e59002d608b734859a3104367ff64f6d7b88c61d3
[INFO] running `"docker" "start" "-a" "20cd623e3a8124ef4cfe9c7e59002d608b734859a3104367ff64f6d7b88c61d3"`
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking async-util v0.1.0 (https://github.com/tokio-rs/async#e1b3ba3d)
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]     Checking arc-waker v0.1.0 (https://github.com/tokio-rs/async#e1b3ba3d)
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking log v0.4.7
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.5 (https://github.com/stjepang/crossbeam?branch=raw-parker#e2a7760f)
[INFO] [stderr]     Checking tracing-core v0.1.2
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking tokio-sync v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking tokio-executor v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio-timer v0.3.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking tokio-io v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-current-thread v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking tokio-codec v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking tokio-reactor v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking tokio-threadpool v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking tokio-uds v0.3.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking tokio-tcp v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking tokio-udp v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking tokio-fs v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]    Compiling tokio-macros v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking tokio v0.2.0 (https://github.com/tokio-rs/tokio#74168ae8)
[INFO] [stderr]     Checking tokio-sync-bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.24s
[INFO] running `"docker" "inspect" "20cd623e3a8124ef4cfe9c7e59002d608b734859a3104367ff64f6d7b88c61d3"`
[INFO] running `"docker" "rm" "-f" "20cd623e3a8124ef4cfe9c7e59002d608b734859a3104367ff64f6d7b88c61d3"`
[INFO] [stdout] 20cd623e3a8124ef4cfe9c7e59002d608b734859a3104367ff64f6d7b88c61d3