[INFO] updating cached repository https://github.com/JohnDoneth/tide-database-testing
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c017fb308a9d80b19753be24ffd6e5aab1303ec
[INFO] testing JohnDoneth/tide-database-testing against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohnDoneth%2Ftide-database-testing" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JohnDoneth/tide-database-testing on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JohnDoneth/tide-database-testing
[INFO] finished tweaking git repo https://github.com/JohnDoneth/tide-database-testing
[INFO] tweaked toml for git repo https://github.com/JohnDoneth/tide-database-testing written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/JohnDoneth/tide-database-testing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 897bf3d85a4b1865c59daf672b2b524349dc906fb6a3be8705931c0cb7b6059c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "897bf3d85a4b1865c59daf672b2b524349dc906fb6a3be8705931c0cb7b6059c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "897bf3d85a4b1865c59daf672b2b524349dc906fb6a3be8705931c0cb7b6059c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "897bf3d85a4b1865c59daf672b2b524349dc906fb6a3be8705931c0cb7b6059c", kill_on_drop: false }`
[INFO] [stdout] 897bf3d85a4b1865c59daf672b2b524349dc906fb6a3be8705931c0cb7b6059c
[INFO] running `Command { std: "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=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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74e2e359f870cb55bf42e44ba0a33d889cae2861b13e571b5053b1cfa85d4643
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "74e2e359f870cb55bf42e44ba0a33d889cae2861b13e571b5053b1cfa85d4643", kill_on_drop: false }`
[INFO] [stderr]    Compiling spin v0.5.0
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling futures v0.1.28
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling route-recognizer v0.1.12
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling indexmap v1.0.2
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling dtoa v0.4.4
[INFO] [stderr]    Compiling try-lock v0.2.2
[INFO] [stderr]    Compiling safemem v0.3.0
[INFO] [stderr]    Compiling opaque-debug v0.2.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling md5 v0.6.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.8
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling regex-syntax v0.6.10
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling crossbeam-utils v0.6.5 (https://github.com/stjepang/crossbeam?branch=raw-parker#e2a7760f)
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling tracing-core v0.1.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling tokio-sync v0.2.0 (https://github.com/tokio-rs/tokio#fe021e6c)
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/tokio-377c595163f99a10/fe021e6/tokio-sync/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(async_await)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio-sync`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "74e2e359f870cb55bf42e44ba0a33d889cae2861b13e571b5053b1cfa85d4643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74e2e359f870cb55bf42e44ba0a33d889cae2861b13e571b5053b1cfa85d4643", kill_on_drop: false }`
[INFO] [stdout] 74e2e359f870cb55bf42e44ba0a33d889cae2861b13e571b5053b1cfa85d4643