[INFO] fetching crate iterable 0.4.0...
[INFO] checking iterable-0.4.0 against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] extracting crate iterable 0.4.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate iterable 0.4.0 on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iterable 0.4.0
[INFO] finished tweaking crates.io crate iterable 0.4.0
[INFO] tweaked toml for crates.io crate iterable 0.4.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate iterable 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34cf449b89616f1fa9e1e61a6b80fa405ec539051939c3e15b6f42c374d0f39c
[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" "34cf449b89616f1fa9e1e61a6b80fa405ec539051939c3e15b6f42c374d0f39c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34cf449b89616f1fa9e1e61a6b80fa405ec539051939c3e15b6f42c374d0f39c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34cf449b89616f1fa9e1e61a6b80fa405ec539051939c3e15b6f42c374d0f39c", kill_on_drop: false }`
[INFO] [stdout] 34cf449b89616f1fa9e1e61a6b80fa405ec539051939c3e15b6f42c374d0f39c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1561358214c5d67e267616b49f968d65d7d3c31397291ae4a7ef4ba5927ef067
[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" "1561358214c5d67e267616b49f968d65d7d3c31397291ae4a7ef4ba5927ef067", kill_on_drop: false }`
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking iterable v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]   --> src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::ops::Try;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]    = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:215:12
[INFO] [stdout]     |
[INFO] [stdout] 215 |         R: Try<Ok = S>,
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:223:12
[INFO] [stdout]     |
[INFO] [stdout] 223 |         R: Try<Ok = ()>,
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:518:9
[INFO] [stdout]     |
[INFO] [stdout] 518 |         <Self::Item as Try>::Ok: Consumer,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:519:19
[INFO] [stdout]     |
[INFO] [stdout] 519 |         Self::CC<<<Self::Item as Try>::Ok as Consumer>::Item>: GrowableProducer<<<Self::Item as Try>::Ok as Consumer>::Item>,
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:519:82
[INFO] [stdout]     |
[INFO] [stdout] 519 |         Self::CC<<<Self::Item as Try>::Ok as Consumer>::Item>: GrowableProducer<<<Self::Item as Try>::Ok as Consumer>::Item>,
[INFO] [stdout]     |                                                                                  ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:514:67
[INFO] [stdout]     |
[INFO] [stdout] 514 |     fn try_flatten(self) -> <Self::Item as TryExt>::Map<Self::CC<<<Self::Item as Try>::Ok as Consumer>::Item>>
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:521:35
[INFO] [stdout]     |
[INFO] [stdout] 521 |         let mut ret = Self::CC::<<<Self::Item as Try>::Ok as Consumer>::Item>::empty();
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:526:49
[INFO] [stdout]     |
[INFO] [stdout] 526 |         <Self::Item as TryExt>::Map::<Self::CC<<<Self::Item as Try>::Ok as Consumer>::Item>>::from_ok(ret)
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]  --> src/util.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Try;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]   = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]  --> src/util.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait TryExt: Try {
[INFO] [stdout]   |                   ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]   = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:215:16
[INFO] [stdout]     |
[INFO] [stdout] 215 |         R: Try<Ok = S>,
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:223:16
[INFO] [stdout]     |
[INFO] [stdout] 223 |         R: Try<Ok = ()>,
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:474:19
[INFO] [stdout]     |
[INFO] [stdout] 474 |         R: TryExt<Ok = Self::Item>,
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:486:19
[INFO] [stdout]     |
[INFO] [stdout] 486 |         R: TryExt<Ok = B>,
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:501:19
[INFO] [stdout]     |
[INFO] [stdout] 501 |         R: TryExt<Ok = B>,
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Error` not found for `Self`
[INFO] [stdout]  --> src/util.rs:4:47
[INFO] [stdout]   |
[INFO] [stdout] 4 |     type Map<U>: TryExt<Ok = U, Error = Self::Error>;
[INFO] [stdout]   |                                               ^^^^^ associated type `Error` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]  --> src/util.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 |     type Map<U>: TryExt<Ok = U, Error = Self::Error>;
[INFO] [stdout]   |                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]   = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]   --> src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::ops::Try;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]    = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:215:12
[INFO] [stdout]     |
[INFO] [stdout] 215 |         R: Try<Ok = S>,
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:223:12
[INFO] [stdout]     |
[INFO] [stdout] 223 |         R: Try<Ok = ()>,
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:518:9
[INFO] [stdout]     |
[INFO] [stdout] 518 |         <Self::Item as Try>::Ok: Consumer,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:519:19
[INFO] [stdout]     |
[INFO] [stdout] 519 |         Self::CC<<<Self::Item as Try>::Ok as Consumer>::Item>: GrowableProducer<<<Self::Item as Try>::Ok as Consumer>::Item>,
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:519:82
[INFO] [stdout]     |
[INFO] [stdout] 519 |         Self::CC<<<Self::Item as Try>::Ok as Consumer>::Item>: GrowableProducer<<<Self::Item as Try>::Ok as Consumer>::Item>,
[INFO] [stdout]     |                                                                                  ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:514:67
[INFO] [stdout]     |
[INFO] [stdout] 514 |     fn try_flatten(self) -> <Self::Item as TryExt>::Map<Self::CC<<<Self::Item as Try>::Ok as Consumer>::Item>>
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:521:35
[INFO] [stdout]     |
[INFO] [stdout] 521 |         let mut ret = Self::CC::<<<Self::Item as Try>::Ok as Consumer>::Item>::empty();
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:526:49
[INFO] [stdout]     |
[INFO] [stdout] 526 |         <Self::Item as TryExt>::Map::<Self::CC<<<Self::Item as Try>::Ok as Consumer>::Item>>::from_ok(ret)
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]  --> src/util.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Try;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]   = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]  --> src/util.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait TryExt: Try {
[INFO] [stdout]   |                   ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]   = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:215:16
[INFO] [stdout]     |
[INFO] [stdout] 215 |         R: Try<Ok = S>,
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:223:16
[INFO] [stdout]     |
[INFO] [stdout] 223 |         R: Try<Ok = ()>,
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:474:19
[INFO] [stdout]     |
[INFO] [stdout] 474 |         R: TryExt<Ok = Self::Item>,
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:486:19
[INFO] [stdout]     |
[INFO] [stdout] 486 |         R: TryExt<Ok = B>,
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]    --> src/lib.rs:501:19
[INFO] [stdout]     |
[INFO] [stdout] 501 |         R: TryExt<Ok = B>,
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]     = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Error` not found for `Self`
[INFO] [stdout]  --> src/util.rs:4:47
[INFO] [stdout]   |
[INFO] [stdout] 4 |     type Map<U>: TryExt<Ok = U, Error = Self::Error>;
[INFO] [stdout]   |                                               ^^^^^ associated type `Error` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]  --> src/util.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 |     type Map<U>: TryExt<Ok = U, Error = Self::Error>;
[INFO] [stdout]   |                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #42327 <https://github.com/rust-lang/rust/issues/42327> for more information
[INFO] [stdout]   = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Error` not found for `util::TryExt`
[INFO] [stdout]  --> src/util.rs:4:33
[INFO] [stdout]   |
[INFO] [stdout] 4 |     type Map<U>: TryExt<Ok = U, Error = Self::Error>;
[INFO] [stdout]   |                                 ^^^^^ associated type `Error` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 19 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0220, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0220`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `iterable`
[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] [stdout] error[E0220]: associated type `Error` not found for `util::TryExt`
[INFO] [stdout]  --> src/util.rs:4:33
[INFO] [stdout]   |
[INFO] [stdout] 4 |     type Map<U>: TryExt<Ok = U, Error = Self::Error>;
[INFO] [stdout]   |                                 ^^^^^ associated type `Error` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 19 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0220, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0220`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1561358214c5d67e267616b49f968d65d7d3c31397291ae4a7ef4ba5927ef067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1561358214c5d67e267616b49f968d65d7d3c31397291ae4a7ef4ba5927ef067", kill_on_drop: false }`
[INFO] [stdout] 1561358214c5d67e267616b49f968d65d7d3c31397291ae4a7ef4ba5927ef067