[INFO] cloning repository https://github.com/tetigi/tokio_tcp_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tetigi/tokio_tcp_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetigi%2Ftokio_tcp_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetigi%2Ftokio_tcp_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f1061e3258172083c1a99477da6bb1b915b0ceb
[INFO] checking tetigi/tokio_tcp_demo against try#82acd1d76add2232e19c1f0feb250d2a19ec6efe for pr-81213
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetigi%2Ftokio_tcp_demo" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tetigi/tokio_tcp_demo on toolchain 82acd1d76add2232e19c1f0feb250d2a19ec6efe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tetigi/tokio_tcp_demo
[INFO] finished tweaking git repo https://github.com/tetigi/tokio_tcp_demo
[INFO] tweaked toml for git repo https://github.com/tetigi/tokio_tcp_demo written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/tetigi/tokio_tcp_demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spin v0.5.1
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded tokio-codec v0.2.0-alpha.2
[INFO] [stderr]   Downloaded tracing-core v0.1.5
[INFO] [stderr]   Downloaded futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded tokio-io v0.2.0-alpha.2
[INFO] [stderr]   Downloaded tokio-macros v0.2.0-alpha.2
[INFO] [stderr]   Downloaded tokio-fs v0.2.0-alpha.2
[INFO] [stderr]   Downloaded syn v1.0.3
[INFO] [stderr]   Downloaded tokio-executor v0.2.0-alpha.2
[INFO] [stderr]   Downloaded tokio-net v0.2.0-alpha.2
[INFO] [stderr]   Downloaded futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded tokio-timer v0.3.0-alpha.2
[INFO] [stderr]   Downloaded tokio v0.2.0-alpha.2
[INFO] [stderr]   Downloaded tokio-sync v0.2.0-alpha.2
[INFO] [stderr]   Downloaded async-trait v0.1.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 07fc9fd97d8afd19982dbfd8945c8dd9eb2d334dc1368111f8e25d5d041a9e29
[INFO] running `Command { std: "docker" "start" "-a" "07fc9fd97d8afd19982dbfd8945c8dd9eb2d334dc1368111f8e25d5d041a9e29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07fc9fd97d8afd19982dbfd8945c8dd9eb2d334dc1368111f8e25d5d041a9e29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07fc9fd97d8afd19982dbfd8945c8dd9eb2d334dc1368111f8e25d5d041a9e29", kill_on_drop: false }`
[INFO] [stdout] 07fc9fd97d8afd19982dbfd8945c8dd9eb2d334dc1368111f8e25d5d041a9e29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0575a74e2c1090dfc654acd67393dce248de2f9271b01499e31a541a55e8623d
[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" "0575a74e2c1090dfc654acd67393dce248de2f9271b01499e31a541a55e8623d", kill_on_drop: false }`
[INFO] [stderr]     Checking spin v0.5.1
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking tracing-core v0.1.5
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking tokio-io v0.2.0-alpha.2
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking tokio-codec v0.2.0-alpha.2
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-sync v0.2.0-alpha.2
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.2
[INFO] [stderr]     Checking tokio-timer v0.3.0-alpha.2
[INFO] [stderr]     Checking tokio-fs v0.2.0-alpha.2
[INFO] [stderr]     Checking tokio-net v0.2.0-alpha.2
[INFO] [stdout] error[E0277]: the trait bound `read_dir::DirEntry: std::sealed::Sealed` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-fs-0.2.0-alpha.2/src/read_dir.rs:230:6
[INFO] [stdout]     |
[INFO] [stdout] 230 | impl DirEntryExt for DirEntry {
[INFO] [stdout]     |      ^^^^^^^^^^^ the trait `std::sealed::Sealed` is not implemented for `read_dir::DirEntry`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio-fs`
[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" "0575a74e2c1090dfc654acd67393dce248de2f9271b01499e31a541a55e8623d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0575a74e2c1090dfc654acd67393dce248de2f9271b01499e31a541a55e8623d", kill_on_drop: false }`
[INFO] [stdout] 0575a74e2c1090dfc654acd67393dce248de2f9271b01499e31a541a55e8623d