[INFO] updating cached repository https://github.com/Sushisource/hubtain
[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] 0a70c292bd0c24dfeccf240d2a04377370ae1121
[INFO] checking Sushisource/hubtain against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSushisource%2Fhubtain" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sushisource/hubtain on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Sushisource/hubtain
[INFO] finished tweaking git repo https://github.com/Sushisource/hubtain
[INFO] tweaked toml for git repo https://github.com/Sushisource/hubtain written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Sushisource/hubtain already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4c85bb1a5bfdbe62e6a38a58962909bf2ee6c5380ba579480445c8d794a707c9
[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" "4c85bb1a5bfdbe62e6a38a58962909bf2ee6c5380ba579480445c8d794a707c9"`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking futures v0.1.28
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[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling slog v2.4.1
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[INFO] [stderr]     Checking async-ready v3.0.0
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]     Checking async-datagram v3.0.0
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[INFO] [stderr]     Checking c_linked_list v1.1.1
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[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling num-integer v0.1.41
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[INFO] [stderr]    Compiling backtrace-sys v0.1.30
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[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.7
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling runtime-attributes v0.3.0-alpha.5
[INFO] [stderr]    Compiling derive-new v0.5.6
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.16
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.16
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.16
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[INFO] [stderr]     Checking runtime-raw v0.3.0-alpha.4
[INFO] [stderr]     Checking juliex v0.3.0-alpha.7
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[INFO] [stderr]     Checking futures-timer v0.2.1
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[INFO] [stderr]     Checking runtime-native v0.3.0-alpha.5
[INFO] [stderr]     Checking runtime v0.3.0-alpha.6
[INFO] [stderr]     Checking bincode v1.1.4
[INFO] [stderr]     Checking hubtain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0658]: async closures are unstable
[INFO] [stderr]    --> src/main.rs:191:39
[INFO] [stderr]     |
[INFO] [stderr] 191 |         let dl_futures = (1..100).map(async move |_| {
[INFO] [stderr]     |                                       ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/62290
[INFO] [stderr]     = help: add `#![feature(async_closure)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: async closures are unstable
[INFO] [stderr]    --> src/main.rs:191:39
[INFO] [stderr]     |
[INFO] [stderr] 191 |         let dl_futures = (1..100).map(async move |_| {
[INFO] [stderr]     |                                       ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/62290
[INFO] [stderr]     = help: add `#![feature(async_closure)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: could not compile `hubtain`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: could not compile `hubtain`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4c85bb1a5bfdbe62e6a38a58962909bf2ee6c5380ba579480445c8d794a707c9"`
[INFO] running `"docker" "rm" "-f" "4c85bb1a5bfdbe62e6a38a58962909bf2ee6c5380ba579480445c8d794a707c9"`
[INFO] [stdout] 4c85bb1a5bfdbe62e6a38a58962909bf2ee6c5380ba579480445c8d794a707c9