[INFO] fetching crate macvtap 0.1.2...
[INFO] testing macvtap-0.1.2 against 1.54.0 for beta-1.55-1
[INFO] extracting crate macvtap 0.1.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate macvtap 0.1.2 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate macvtap 0.1.2
[INFO] finished tweaking crates.io crate macvtap 0.1.2
[INFO] tweaked toml for crates.io crate macvtap 0.1.2 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate macvtap 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5706f6cc824f9924d7ee37bbad5d4a6366febf484ee5206cfc7a4d0c4e44d478
[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" "5706f6cc824f9924d7ee37bbad5d4a6366febf484ee5206cfc7a4d0c4e44d478", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5706f6cc824f9924d7ee37bbad5d4a6366febf484ee5206cfc7a4d0c4e44d478", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5706f6cc824f9924d7ee37bbad5d4a6366febf484ee5206cfc7a4d0c4e44d478", kill_on_drop: false }`
[INFO] [stdout] 5706f6cc824f9924d7ee37bbad5d4a6366febf484ee5206cfc7a4d0c4e44d478
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a243bcc18cc1eb6100e43d7cae7949a48cdc7061c0e081c861b5c84c881a0940
[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" "a243bcc18cc1eb6100e43d7cae7949a48cdc7061c0e081c861b5c84c881a0940", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling macvtap v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.80s
[INFO] running `Command { std: "docker" "inspect" "a243bcc18cc1eb6100e43d7cae7949a48cdc7061c0e081c861b5c84c881a0940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a243bcc18cc1eb6100e43d7cae7949a48cdc7061c0e081c861b5c84c881a0940", kill_on_drop: false }`
[INFO] [stdout] a243bcc18cc1eb6100e43d7cae7949a48cdc7061c0e081c861b5c84c881a0940
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aed7723ac44efe2b8fa673a225682ee90e8e0a474b714a32dac2dad3d185d585
[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" "aed7723ac44efe2b8fa673a225682ee90e8e0a474b714a32dac2dad3d185d585", kill_on_drop: false }`
[INFO] [stderr]    Compiling macvtap v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "aed7723ac44efe2b8fa673a225682ee90e8e0a474b714a32dac2dad3d185d585", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aed7723ac44efe2b8fa673a225682ee90e8e0a474b714a32dac2dad3d185d585", kill_on_drop: false }`
[INFO] [stdout] aed7723ac44efe2b8fa673a225682ee90e8e0a474b714a32dac2dad3d185d585
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b732878c0fc77c84e18480b4a8f6a4b62acf0cbf27eede100b30e0dcc9a4137e
[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" "b732878c0fc77c84e18480b4a8f6a4b62acf0cbf27eede100b30e0dcc9a4137e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/macvtap-ffeeed303732c29d)
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests macvtap
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - Iface::new (line 33) ... FAILED
[INFO] [stdout] test src/lib.rs - Iface::new (line 40) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Iface::new (line 33) stdout ----
[INFO] [stdout] error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, `}`, or an operator, found `macvtap`
[INFO] [stdout]  --> src/lib.rs:34:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | modprobe macvtap
[INFO] [stdout]   |          ^^^^^^^ expected one of 8 possible tokens
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Iface::new (line 40) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `smol`
[INFO] [stdout]   --> src/lib.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use smol::{Async};
[INFO] [stdout]    |     ^^^^ use of undeclared crate or module `smol`
[INFO] [stdout] 
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:53:1
[INFO] [stdout]    |
[INFO] [stdout] 3  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_40_0() {
[INFO] [stdout]    |                                         ----------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 16 | async_iface.read(&mut buf).await;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/lib.rs:45:56
[INFO] [stdout]    |
[INFO] [stdout] 3  |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_40_0() {
[INFO] [stdout]    |  ______________________________________-
[INFO] [stdout] 4  | | use macvtap::{Iface, Mode};
[INFO] [stdout] 5  | | use std::{io::{Read, Write, Result}, vec};
[INFO] [stdout] 6  | |  
[INFO] [stdout] 7  | | // sync read/write
[INFO] [stdout] 8  | | let mut iface = Iface::new("tap0", Mode::MacvTap, 1500)?;
[INFO] [stdout]    | |                                                        ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] ...  |
[INFO] [stdout] 16 | | async_iface.read(&mut buf).await;
[INFO] [stdout] 17 | | } _doctest_main_src_lib_rs_40_0() }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for struct `Vec<{integer}>` in the current scope
[INFO] [stdout]   --> src/lib.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | buf.read(&mut buf);
[INFO] [stdout]    |     ^^^^ method not found in `Vec<{integer}>`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/lib.rs:52:36
[INFO] [stdout]    |
[INFO] [stdout] 3  |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_40_0() {
[INFO] [stdout]    |  ______________________________________-
[INFO] [stdout] 4  | | use macvtap::{Iface, Mode};
[INFO] [stdout] 5  | | use std::{io::{Read, Write, Result}, vec};
[INFO] [stdout] 6  | |  
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | | let async_iface = Async::new(iface)?;
[INFO] [stdout]    | |                                    ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 16 | | async_iface.read(&mut buf).await;
[INFO] [stdout] 17 | | } _doctest_main_src_lib_rs_40_0() }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<_>` is not implemented for `()`
[INFO] [stdout]    = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0599, E0728.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Iface::new (line 33)
[INFO] [stdout]     src/lib.rs - Iface::new (line 40)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.29s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "b732878c0fc77c84e18480b4a8f6a4b62acf0cbf27eede100b30e0dcc9a4137e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b732878c0fc77c84e18480b4a8f6a4b62acf0cbf27eede100b30e0dcc9a4137e", kill_on_drop: false }`
[INFO] [stdout] b732878c0fc77c84e18480b4a8f6a4b62acf0cbf27eede100b30e0dcc9a4137e
