[INFO] cloning repository https://github.com/sourgrasses/pinguin [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sourgrasses/pinguin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourgrasses%2Fpinguin", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourgrasses%2Fpinguin'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0c955bdcade03c720b422b8ce5e4d7bebe4cf869 [INFO] checking sourgrasses/pinguin against master#0c1fb2a1e65a57073dc62dd502319a00cf753371 for pr-114655 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourgrasses%2Fpinguin" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sourgrasses/pinguin on toolchain 0c1fb2a1e65a57073dc62dd502319a00cf753371 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0c1fb2a1e65a57073dc62dd502319a00cf753371" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sourgrasses/pinguin [INFO] finished tweaking git repo https://github.com/sourgrasses/pinguin [INFO] tweaked toml for git repo https://github.com/sourgrasses/pinguin written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/sourgrasses/pinguin 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" "+0c1fb2a1e65a57073dc62dd502319a00cf753371" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking sourgrasses/pinguin against try#1d06cad56a6e74d21cdf272bd6d9479160000fba for pr-114655 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourgrasses%2Fpinguin" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sourgrasses/pinguin on toolchain 1d06cad56a6e74d21cdf272bd6d9479160000fba [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1d06cad56a6e74d21cdf272bd6d9479160000fba" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sourgrasses/pinguin [INFO] finished tweaking git repo https://github.com/sourgrasses/pinguin [INFO] tweaked toml for git repo https://github.com/sourgrasses/pinguin written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/sourgrasses/pinguin 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" "+1d06cad56a6e74d21cdf272bd6d9479160000fba" "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] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking sourgrasses/pinguin against try#1d06cad56a6e74d21cdf272bd6d9479160000fba for pr-114655 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourgrasses%2Fpinguin" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sourgrasses/pinguin on toolchain 1d06cad56a6e74d21cdf272bd6d9479160000fba [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1d06cad56a6e74d21cdf272bd6d9479160000fba" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sourgrasses/pinguin [INFO] finished tweaking git repo https://github.com/sourgrasses/pinguin [INFO] tweaked toml for git repo https://github.com/sourgrasses/pinguin written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/sourgrasses/pinguin 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" "+1d06cad56a6e74d21cdf272bd6d9479160000fba" "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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded proc-macro-hack v0.5.4 [INFO] [stderr] Downloaded proc-macro-nested v0.1.2 [INFO] [stderr] Downloaded unicode-xid v0.0.3 [INFO] [stderr] Downloaded futures-channel-preview v0.3.0-alpha.12 [INFO] [stderr] Downloaded pnet_sys v0.21.0 [INFO] [stderr] Downloaded pnet_macros_support v0.21.0 [INFO] [stderr] Downloaded syntex_pos v0.42.0 [INFO] [stderr] Downloaded pnet_transport v0.21.0 [INFO] [stderr] Downloaded crossbeam v0.7.1 [INFO] [stderr] Downloaded pnet_datalink v0.21.0 [INFO] [stderr] Downloaded smallvec v0.6.8 [INFO] [stderr] Downloaded aho-corasick v0.6.9 [INFO] [stderr] Downloaded futures-preview v0.3.0-alpha.12 [INFO] [stderr] Downloaded mio v0.6.16 [INFO] [stderr] Downloaded syntex_syntax v0.42.0 [INFO] [stderr] Downloaded libc v0.2.48 [INFO] [stderr] Downloaded futures-util-preview v0.3.0-alpha.12 [INFO] [stderr] Downloaded crossbeam-channel v0.3.8 [INFO] [stderr] Downloaded syntex_errors v0.42.0 [INFO] [stderr] Downloaded futures-io-preview v0.3.0-alpha.12 [INFO] [stderr] Downloaded ipnetwork v0.12.8 [INFO] [stderr] Downloaded pnet_packet v0.21.0 [INFO] [stderr] Downloaded futures-executor-preview v0.3.0-alpha.12 [INFO] [stderr] Downloaded syntex v0.42.2 [INFO] [stderr] Downloaded pnet_base v0.21.0 [INFO] [stderr] Downloaded rand v0.5.6 [INFO] [stderr] Downloaded memchr v2.1.3 [INFO] [stderr] Downloaded futures-select-macro-preview v0.3.0-alpha.12 [INFO] [stderr] Downloaded pnet v0.21.0 [INFO] [stderr] Downloaded futures-sink-preview v0.3.0-alpha.12 [INFO] [stderr] Downloaded futures-core-preview v0.3.0-alpha.12 [INFO] [stderr] Downloaded pnet_macros v0.21.0 [INFO] [stderr] Downloaded romio v0.3.0-alpha.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1d06cad56a6e74d21cdf272bd6d9479160000fba" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8e9ced4762ab68df66c342014cce4796475c8ed6de2573a8a0564ee11847e0a8 [INFO] running `Command { std: "docker" "start" "-a" "8e9ced4762ab68df66c342014cce4796475c8ed6de2573a8a0564ee11847e0a8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8e9ced4762ab68df66c342014cce4796475c8ed6de2573a8a0564ee11847e0a8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8e9ced4762ab68df66c342014cce4796475c8ed6de2573a8a0564ee11847e0a8", kill_on_drop: false }` [INFO] [stdout] 8e9ced4762ab68df66c342014cce4796475c8ed6de2573a8a0564ee11847e0a8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1d06cad56a6e74d21cdf272bd6d9479160000fba" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 80975d7137e67e7b05479948611c9fd075c9d49b0d7be55359b3854046cf6696 [INFO] running `Command { std: "docker" "start" "-a" "80975d7137e67e7b05479948611c9fd075c9d49b0d7be55359b3854046cf6696", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.48 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling cfg-if v0.1.6 [INFO] [stderr] Compiling memchr v2.1.3 [INFO] [stderr] Compiling proc-macro2 v0.4.27 [INFO] [stderr] Compiling rustc-serialize v0.3.24 [INFO] [stderr] Compiling unicode-xid v0.0.3 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Compiling term v0.4.6 [INFO] [stderr] Compiling ucd-util v0.1.3 [INFO] [stderr] Checking either v1.5.0 [INFO] [stderr] Compiling bitflags v0.5.0 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Compiling utf8-ranges v1.0.2 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling log v0.4.6 [INFO] [stderr] Compiling thread_local v0.3.6 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Compiling regex-syntax v0.5.6 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.12 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Compiling proc-macro-nested v0.1.2 [INFO] [stderr] Compiling glob v0.2.11 [INFO] [stderr] Compiling log v0.3.9 [INFO] [stdout] error[E0432]: unresolved import `core::task::LocalWaker` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/future/future_obj.rs:6:12 [INFO] [stdout] | [INFO] [stdout] 6 | task::{LocalWaker, Poll}, [INFO] [stdout] | ^^^^^^^^^^ no `LocalWaker` in `task` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved imports `core::task::LocalWaker`, `core::task::UnsafeWake` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/task/mod.rs:8:35 [INFO] [stdout] | [INFO] [stdout] 8 | pub use core::task::{Poll, Waker, LocalWaker, UnsafeWake}; [INFO] [stdout] | ^^^^^^^^^^ ^^^^^^^^^^ no `UnsafeWake` in `task` [INFO] [stdout] | | [INFO] [stdout] | no `LocalWaker` in `task` [INFO] [stdout] | [INFO] [stdout] = note: unresolved item `crate::future::future_obj::if_std::LocalWaker` exists but is inaccessible [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved imports `std::task::local_waker`, `std::task::local_waker_from_nonlocal` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/task/mod.rs:10:27 [INFO] [stdout] | [INFO] [stdout] 10 | pub use std::task::{Wake, local_waker, local_waker_from_nonlocal}; [INFO] [stdout] | ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ no `local_waker_from_nonlocal` in `task` [INFO] [stdout] | | [INFO] [stdout] | no `local_waker` in `task` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking smallvec v0.6.8 [INFO] [stdout] error[E0392]: parameter `T` is never used [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/future/future_obj.rs:90:26 [INFO] [stdout] | [INFO] [stdout] 90 | pub struct FutureObj<'a, T>(LocalFutureObj<'a, T>); [INFO] [stdout] | ^ unused parameter [INFO] [stdout] | [INFO] [stdout] = help: consider removing `T`, referring to it in a field, or using a marker such as `PhantomData` [INFO] [stdout] = help: if you intended `T` to be a const parameter, use `const T: usize` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0392]: parameter `T` is never used [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/stream/stream_obj.rs:87:26 [INFO] [stdout] | [INFO] [stdout] 87 | pub struct StreamObj<'a, T>(LocalStreamObj<'a, T>); [INFO] [stdout] | ^ unused parameter [INFO] [stdout] | [INFO] [stdout] = help: consider removing `T`, referring to it in a field, or using a marker such as `PhantomData` [INFO] [stdout] = help: if you intended `T` to be a const parameter, use `const T: usize` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/future/future_obj.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | / LocalFutureObj { [INFO] [stdout] 29 | | ptr: f.into_raw(), [INFO] [stdout] 30 | | poll_fn: F::poll, [INFO] [stdout] 31 | | drop_fn: F::drop, [INFO] [stdout] 32 | | _marker: PhantomData, [INFO] [stdout] 33 | | } [INFO] [stdout] | |_________^ cannot infer type of the type parameter `T` declared on the struct `LocalFutureObj` [INFO] [stdout] | [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 28 | LocalFutureObj:: { [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/future/future_obj.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | FutureObj(self) [INFO] [stdout] | ^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `FutureObj` [INFO] [stdout] | [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 42 | FutureObj::(self) [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/future/future_obj.rs:99:9 [INFO] [stdout] | [INFO] [stdout] 99 | FutureObj(LocalFutureObj::new(f)) [INFO] [stdout] | ^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `FutureObj` [INFO] [stdout] | [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 99 | FutureObj::(LocalFutureObj::new(f)) [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking pnet_base v0.21.0 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/stream/stream_obj.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | / LocalStreamObj { [INFO] [stdout] 28 | | ptr: f.into_raw(), [INFO] [stdout] 29 | | poll_next_fn: F::poll_next, [INFO] [stdout] 30 | | drop_fn: F::drop, [INFO] [stdout] 31 | | _marker: PhantomData, [INFO] [stdout] 32 | | } [INFO] [stdout] | |_________^ cannot infer type of the type parameter `T` declared on the struct `LocalStreamObj` [INFO] [stdout] | [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 27 | LocalStreamObj:: { [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/stream/stream_obj.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | StreamObj(self) [INFO] [stdout] | ^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `StreamObj` [INFO] [stdout] | [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 41 | StreamObj::(self) [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.12/src/stream/stream_obj.rs:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | StreamObj(LocalStreamObj::new(f)) [INFO] [stdout] | ^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `StreamObj` [INFO] [stdout] | [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 96 | StreamObj::(LocalStreamObj::new(f)) [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 11 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0282, E0392, E0432. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.24/src/serialize.rs:1155:5 [INFO] [stdout] | [INFO] [stdout] 1155 | fn decode(d: &mut D) -> Result, D::Error> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | the parameter type `T` must be valid for the static lifetime... [INFO] [stdout] | ...so that the type `T` will meet its required lifetime bounds... [INFO] [stdout] | [INFO] [stdout] note: ...that is required by this bound [INFO] [stdout] --> /rustc/1d06cad56a6e74d21cdf272bd6d9479160000fba/library/alloc/src/borrow.rs:180:30 [INFO] [stdout] help: consider adding an explicit lifetime bound [INFO] [stdout] | [INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T> [INFO] [stdout] | +++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `futures-core-preview` (lib) due to 12 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0310`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "80975d7137e67e7b05479948611c9fd075c9d49b0d7be55359b3854046cf6696", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "80975d7137e67e7b05479948611c9fd075c9d49b0d7be55359b3854046cf6696", kill_on_drop: false }` [INFO] [stdout] 80975d7137e67e7b05479948611c9fd075c9d49b0d7be55359b3854046cf6696