[INFO] fetching crate juliex 0.3.0-alpha.8... [INFO] checking juliex-0.3.0-alpha.8 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate juliex 0.3.0-alpha.8 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate juliex 0.3.0-alpha.8 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 crates.io crate juliex 0.3.0-alpha.8 [INFO] finished tweaking crates.io crate juliex 0.3.0-alpha.8 [INFO] tweaked toml for crates.io crate juliex 0.3.0-alpha.8 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate crates.io crate juliex 0.3.0-alpha.8 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] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded autocfg v0.1.2 [INFO] [stderr] Downloaded smallvec v0.6.9 [INFO] [stderr] Downloaded mio v0.6.16 [INFO] [stderr] Downloaded memchr v2.2.0 [INFO] [stderr] Downloaded num_cpus v1.10.0 [INFO] [stderr] Downloaded quote v0.6.12 [INFO] [stderr] Downloaded syn v0.15.34 [INFO] [stderr] Downloaded futures-io-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded arrayvec v0.4.10 [INFO] [stderr] Downloaded futures-channel-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded getrandom v0.1.3 [INFO] [stderr] Downloaded futures-util-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded bitflags v1.0.4 [INFO] [stderr] Downloaded rand_jitter v0.1.3 [INFO] [stderr] Downloaded rand_os v0.1.2 [INFO] [stderr] Downloaded futures-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-executor-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded lazy_static v1.2.0 [INFO] [stderr] Downloaded crossbeam v0.7.2 [INFO] [stderr] Downloaded proc-macro-hack v0.5.7 [INFO] [stderr] Downloaded futures-select-macro-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded async-ready v2.1.0 [INFO] [stderr] Downloaded async-datagram v2.2.0 [INFO] [stderr] Downloaded romio v0.3.0-alpha.7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 29ea6e254d2b5a89b07367f78460621a9479a3673ddfbd171de19cf78f6d328f [INFO] running `Command { std: "docker" "start" "-a" "29ea6e254d2b5a89b07367f78460621a9479a3673ddfbd171de19cf78f6d328f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "29ea6e254d2b5a89b07367f78460621a9479a3673ddfbd171de19cf78f6d328f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "29ea6e254d2b5a89b07367f78460621a9479a3673ddfbd171de19cf78f6d328f", kill_on_drop: false }` [INFO] [stdout] 29ea6e254d2b5a89b07367f78460621a9479a3673ddfbd171de19cf78f6d328f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 5f61fcaf8c6a209e1fcaff80e101969b46b66b05c5d68c6a35ef85d073125783 [INFO] running `Command { std: "docker" "start" "-a" "5f61fcaf8c6a209e1fcaff80e101969b46b66b05c5d68c6a35ef85d073125783", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.60 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling syn v0.15.34 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Checking futures-io-preview v0.3.0-alpha.17 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking smallvec v0.6.9 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Checking lazycell v1.2.1 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.3 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_xorshift v0.1.1 [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] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.17 [INFO] [stderr] Checking async-datagram v2.2.0 [INFO] [stderr] Checking async-ready v2.1.0 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking getrandom v0.1.3 [INFO] [stderr] Checking rand_os v0.1.2 [INFO] [stderr] Checking num_cpus v1.10.0 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking rand_core v0.5.0 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking mio v0.6.16 [INFO] [stderr] Checking rand v0.7.0 [INFO] [stderr] Checking crossbeam v0.7.2 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Compiling proc-macro-hack v0.5.7 [INFO] [stderr] Compiling futures-select-macro-preview v0.3.0-alpha.17 [INFO] [stderr] Checking futures-util-preview v0.3.0-alpha.17 [INFO] [stderr] Checking futures-executor-preview v0.3.0-alpha.17 [INFO] [stderr] Checking futures-preview v0.3.0-alpha.17 [INFO] [stderr] Checking romio v0.3.0-alpha.7 [INFO] [stderr] Checking juliex v0.3.0-alpha.8 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Future` is imported redundantly [INFO] [stdout] --> src/lib.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 60 | use std::future::Future; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 71 | use futures::prelude::*; [INFO] [stdout] | ------------------- the item `Future` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Future` is imported redundantly [INFO] [stdout] --> src/lib.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 60 | use std::future::Future; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 71 | use futures::prelude::*; [INFO] [stdout] | ------------------- the item `Future` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Future` is imported redundantly [INFO] [stdout] --> src/tests.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::future::Future; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 7 | use super::*; [INFO] [stdout] | -------- the item `Future` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Context` is imported redundantly [INFO] [stdout] --> src/tests.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::task::Context; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 7 | use super::*; [INFO] [stdout] | -------- the item `Context` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable [INFO] [stdout] --> examples/echo.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(async_await)] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:56:27 [INFO] [stdout] | [INFO] [stdout] 56 | #![cfg_attr(test, feature(async_await))] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable [INFO] [stdout] --> examples/http.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(async_await)] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.30s [INFO] running `Command { std: "docker" "inspect" "5f61fcaf8c6a209e1fcaff80e101969b46b66b05c5d68c6a35ef85d073125783", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5f61fcaf8c6a209e1fcaff80e101969b46b66b05c5d68c6a35ef85d073125783", kill_on_drop: false }` [INFO] [stdout] 5f61fcaf8c6a209e1fcaff80e101969b46b66b05c5d68c6a35ef85d073125783 [INFO] checking juliex-0.3.0-alpha.8 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate juliex 0.3.0-alpha.8 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate juliex 0.3.0-alpha.8 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 crates.io crate juliex 0.3.0-alpha.8 [INFO] finished tweaking crates.io crate juliex 0.3.0-alpha.8 [INFO] tweaked toml for crates.io crate juliex 0.3.0-alpha.8 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate crates.io crate juliex 0.3.0-alpha.8 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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] a382ef62eb1b00dd732218a462f67a3decae95afdbb2e7d7f850b81f7a5c119c [INFO] running `Command { std: "docker" "start" "-a" "a382ef62eb1b00dd732218a462f67a3decae95afdbb2e7d7f850b81f7a5c119c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a382ef62eb1b00dd732218a462f67a3decae95afdbb2e7d7f850b81f7a5c119c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a382ef62eb1b00dd732218a462f67a3decae95afdbb2e7d7f850b81f7a5c119c", kill_on_drop: false }` [INFO] [stdout] a382ef62eb1b00dd732218a462f67a3decae95afdbb2e7d7f850b81f7a5c119c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 77f976c99363fc6bab8de040b7476a9c73b01e1fb400127489e2118843d23aad [INFO] running `Command { std: "docker" "start" "-a" "77f976c99363fc6bab8de040b7476a9c73b01e1fb400127489e2118843d23aad", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.60 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling syn v0.15.34 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Checking futures-io-preview v0.3.0-alpha.17 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking smallvec v0.6.9 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Checking rand_jitter v0.1.3 [INFO] [stderr] Checking lazycell v1.2.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.17 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking async-datagram v2.2.0 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking async-ready v2.1.0 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking getrandom v0.1.3 [INFO] [stderr] Checking rand_os v0.1.2 [INFO] [stderr] Checking num_cpus v1.10.0 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking rand_core v0.5.0 [INFO] [stderr] Checking crossbeam v0.7.2 [INFO] [stderr] Checking mio v0.6.16 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.0 [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" "77f976c99363fc6bab8de040b7476a9c73b01e1fb400127489e2118843d23aad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "77f976c99363fc6bab8de040b7476a9c73b01e1fb400127489e2118843d23aad", kill_on_drop: false }` [INFO] [stdout] 77f976c99363fc6bab8de040b7476a9c73b01e1fb400127489e2118843d23aad