[INFO] cloning repository https://github.com/hone/tcp-mailbox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hone/tcp-mailbox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhone%2Ftcp-mailbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhone%2Ftcp-mailbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99905d01669784faa40c71724b581c2bc1da445b
[INFO] checking hone/tcp-mailbox against try#590af02d982816cfb2e4e43f8c54065e816581ce for pr-111505
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhone%2Ftcp-mailbox" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hone/tcp-mailbox on toolchain 590af02d982816cfb2e4e43f8c54065e816581ce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+590af02d982816cfb2e4e43f8c54065e816581ce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hone/tcp-mailbox
[INFO] finished tweaking git repo https://github.com/hone/tcp-mailbox
[INFO] tweaked toml for git repo https://github.com/hone/tcp-mailbox written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hone/tcp-mailbox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+590af02d982816cfb2e4e43f8c54065e816581ce" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+590af02d982816cfb2e4e43f8c54065e816581ce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3a6711d25df4dfededdf68b5b1e8389989b62f8095de432dd3f05d4eaa2abe7
[INFO] running `Command { std: "docker" "start" "-a" "a3a6711d25df4dfededdf68b5b1e8389989b62f8095de432dd3f05d4eaa2abe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3a6711d25df4dfededdf68b5b1e8389989b62f8095de432dd3f05d4eaa2abe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3a6711d25df4dfededdf68b5b1e8389989b62f8095de432dd3f05d4eaa2abe7", kill_on_drop: false }`
[INFO] [stdout] a3a6711d25df4dfededdf68b5b1e8389989b62f8095de432dd3f05d4eaa2abe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+590af02d982816cfb2e4e43f8c54065e816581ce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0e55846c9da76f5d9b06c28c936dd17142f85c6871bd39060df41efd12a9d70
[INFO] running `Command { std: "docker" "start" "-a" "d0e55846c9da76f5d9b06c28c936dd17142f85c6871bd39060df41efd12a9d70", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stdout] error: this attribute can only be applied to a `use` item
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.5.0/src/macros/cfg.rs:160:19
[INFO] [stdout]     |
[INFO] [stdout] 160 |               #[doc(inline)]
[INFO] [stdout]     |                     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.5.0/src/macros/mod.rs:22:1
[INFO] [stdout]     |
[INFO] [stdout] 22  | / cfg_macros! {
[INFO] [stdout] 23  | |     #[macro_use]
[INFO] [stdout] 24  | |     mod select;
[INFO] [stdout] 25  | |
[INFO] [stdout] ...   |
[INFO] [stdout] 30  | |     mod try_join;
[INFO] [stdout] 31  | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: read <https://doc.rust-lang.org/nightly/rustdoc/the-doc-attribute.html#inline-and-no_inline> for more information
[INFO] [stdout]     = note: this error originates in the macro `cfg_macros` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d0e55846c9da76f5d9b06c28c936dd17142f85c6871bd39060df41efd12a9d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0e55846c9da76f5d9b06c28c936dd17142f85c6871bd39060df41efd12a9d70", kill_on_drop: false }`
[INFO] [stdout] d0e55846c9da76f5d9b06c28c936dd17142f85c6871bd39060df41efd12a9d70