[INFO] cloning repository https://github.com/NunoDasNeves/mini_rust_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NunoDasNeves/mini_rust_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNunoDasNeves%2Fmini_rust_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNunoDasNeves%2Fmini_rust_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 50d9674098104e31e8e20f10979ca91b71b8ff2d
[INFO] checking NunoDasNeves/mini_rust_server against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNunoDasNeves%2Fmini_rust_server" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NunoDasNeves/mini_rust_server on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NunoDasNeves/mini_rust_server
[INFO] finished tweaking git repo https://github.com/NunoDasNeves/mini_rust_server
[INFO] tweaked toml for git repo https://github.com/NunoDasNeves/mini_rust_server written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/NunoDasNeves/mini_rust_server 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vecio v0.1.0
[INFO] [stderr]   Downloaded webpki v0.19.1
[INFO] [stderr]   Downloaded sct v0.5.0
[INFO] [stderr]   Downloaded rustls v0.15.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 095fbff47b2182cc436a118bf476a8f5b41e4ce0e8d0a7d7b3355c86b5c0f64e
[INFO] running `Command { std: "docker" "start" "-a" "095fbff47b2182cc436a118bf476a8f5b41e4ce0e8d0a7d7b3355c86b5c0f64e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "095fbff47b2182cc436a118bf476a8f5b41e4ce0e8d0a7d7b3355c86b5c0f64e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "095fbff47b2182cc436a118bf476a8f5b41e4ce0e8d0a7d7b3355c86b5c0f64e", kill_on_drop: false }`
[INFO] [stdout] 095fbff47b2182cc436a118bf476a8f5b41e4ce0e8d0a7d7b3355c86b5c0f64e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba8da3dcd11b6bea00b05271638b9ce6c782f74731a5d04915ea95e91b9a6825
[INFO] running `Command { std: "docker" "start" "-a" "ba8da3dcd11b6bea00b05271638b9ce6c782f74731a5d04915ea95e91b9a6825", kill_on_drop: false }`
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking boxfnonce v0.1.1
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]     Checking daemonize v0.4.1
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking vecio v0.1.0
[INFO] [stderr]     Checking webpki v0.19.1
[INFO] [stderr]     Checking sct v0.5.0
[INFO] [stderr]     Checking rustls v0.15.2
[INFO] [stderr]     Checking mini_rust_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `mio` is imported redundantly
[INFO] [stdout]  --> src/connections.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use mio;
[INFO] [stdout]   |     ^^^ the item `mio` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rustls` is imported redundantly
[INFO] [stdout]   --> src/connections.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use rustls;
[INFO] [stdout]    |     ^^^^^^ the item `rustls` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mio` is imported redundantly
[INFO] [stdout]  --> src/connections.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use mio;
[INFO] [stdout]   |     ^^^ the item `mio` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rustls` is imported redundantly
[INFO] [stdout]   --> src/connections.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use rustls;
[INFO] [stdout]    |     ^^^^^^ the item `rustls` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.71s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: daemonize v0.4.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "ba8da3dcd11b6bea00b05271638b9ce6c782f74731a5d04915ea95e91b9a6825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba8da3dcd11b6bea00b05271638b9ce6c782f74731a5d04915ea95e91b9a6825", kill_on_drop: false }`
[INFO] [stdout] ba8da3dcd11b6bea00b05271638b9ce6c782f74731a5d04915ea95e91b9a6825
[INFO] checking NunoDasNeves/mini_rust_server against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNunoDasNeves%2Fmini_rust_server" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NunoDasNeves/mini_rust_server on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NunoDasNeves/mini_rust_server
[INFO] finished tweaking git repo https://github.com/NunoDasNeves/mini_rust_server
[INFO] tweaked toml for git repo https://github.com/NunoDasNeves/mini_rust_server written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/NunoDasNeves/mini_rust_server 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a69b970d65e43a82c30b2d5d777ff9ad89549c552f50227fd803924854d69793
[INFO] running `Command { std: "docker" "start" "-a" "a69b970d65e43a82c30b2d5d777ff9ad89549c552f50227fd803924854d69793", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a69b970d65e43a82c30b2d5d777ff9ad89549c552f50227fd803924854d69793", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a69b970d65e43a82c30b2d5d777ff9ad89549c552f50227fd803924854d69793", kill_on_drop: false }`
[INFO] [stdout] a69b970d65e43a82c30b2d5d777ff9ad89549c552f50227fd803924854d69793
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5da50ec1c1dd333e2268f60fd736501736e0bbcc47ff4c6a18bfd290d297e246
[INFO] running `Command { std: "docker" "start" "-a" "5da50ec1c1dd333e2268f60fd736501736e0bbcc47ff4c6a18bfd290d297e246", kill_on_drop: false }`
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking boxfnonce v0.1.1
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking daemonize v0.4.1
[INFO] [stderr]     Checking vecio v0.1.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mio-0.6.16/src/poll.rs:2067:13
[INFO] [stdout]      |
[INFO] [stdout] 2067 |             panic!();
[INFO] [stdout]      |             ^^^^^^^^ cannot infer type
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mio` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5da50ec1c1dd333e2268f60fd736501736e0bbcc47ff4c6a18bfd290d297e246", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5da50ec1c1dd333e2268f60fd736501736e0bbcc47ff4c6a18bfd290d297e246", kill_on_drop: false }`
[INFO] [stdout] 5da50ec1c1dd333e2268f60fd736501736e0bbcc47ff4c6a18bfd290d297e246