[INFO] fetching crate macvtap 0.1.2...
[INFO] testing macvtap-0.1.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate macvtap 0.1.2 into /workspace/builds/worker-3-tc1/source
[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-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate macvtap 0.1.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate macvtap 0.1.2 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.66
[INFO] [stderr]   Downloaded libc v0.2.81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04a3214294da3e992896d624e01d1675ec509bfbc6122603c812e9a74c0ce295
[INFO] running `Command { std: "docker" "start" "-a" "04a3214294da3e992896d624e01d1675ec509bfbc6122603c812e9a74c0ce295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04a3214294da3e992896d624e01d1675ec509bfbc6122603c812e9a74c0ce295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04a3214294da3e992896d624e01d1675ec509bfbc6122603c812e9a74c0ce295", kill_on_drop: false }`
[INFO] [stdout] 04a3214294da3e992896d624e01d1675ec509bfbc6122603c812e9a74c0ce295
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 828928193fedfb527840a83b77724589aa789bcee89372f73a29c386183c3e54
[INFO] running `Command { std: "docker" "start" "-a" "828928193fedfb527840a83b77724589aa789bcee89372f73a29c386183c3e54", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling macvtap v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern {
[INFO] [stdout]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "828928193fedfb527840a83b77724589aa789bcee89372f73a29c386183c3e54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "828928193fedfb527840a83b77724589aa789bcee89372f73a29c386183c3e54", kill_on_drop: false }`
[INFO] [stdout] 828928193fedfb527840a83b77724589aa789bcee89372f73a29c386183c3e54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 148ffcf13a108fc38a90a60b8a96079135c410c6780ce27a40aeca0ff5e8efaf
[INFO] running `Command { std: "docker" "start" "-a" "148ffcf13a108fc38a90a60b8a96079135c410c6780ce27a40aeca0ff5e8efaf", kill_on_drop: false }`
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern {
[INFO] [stdout]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling macvtap v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern {
[INFO] [stdout]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "148ffcf13a108fc38a90a60b8a96079135c410c6780ce27a40aeca0ff5e8efaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "148ffcf13a108fc38a90a60b8a96079135c410c6780ce27a40aeca0ff5e8efaf", kill_on_drop: false }`
[INFO] [stdout] 148ffcf13a108fc38a90a60b8a96079135c410c6780ce27a40aeca0ff5e8efaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 469ab8e8d7784965dc0787c6936ce49c80e63457d702cdb9ad80c02c5404fc86
[INFO] running `Command { std: "docker" "start" "-a" "469ab8e8d7784965dc0787c6936ce49c80e63457d702cdb9ad80c02c5404fc86", kill_on_drop: false }`
[INFO] [stderr] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stderr]  --> src/lib.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | extern {
[INFO] [stderr]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `macvtap` (lib) generated 1 warning (run `cargo fix --lib -p macvtap` to apply 1 suggestion)
[INFO] [stderr] warning: `macvtap` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/macvtap-2b532d6bca6854b1)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[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] [stderr]    Doc-tests macvtap
[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 `::`, found `macvtap`
[INFO] [stdout]   --> src/lib.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 | modprobe macvtap
[INFO] [stdout]    |          ^^^^^^^ expected one of `!` or `::`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | use smol::{Async};
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `smol`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `smol`, use `cargo add smol` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:54:28
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_40_0() {
[INFO] [stdout]    |                                      ---------------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 54 | 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:46:56
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_40_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 46 | let mut iface = Iface::new("tap0", Mode::MacvTap, 1500)?;
[INFO] [stdout]    |                                                        ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 41 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_40_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 42 | use macvtap::{Iface, Mode};
[INFO] [stdout] ...
[INFO] [stdout] 54 | async_iface.read(&mut buf).await;
[INFO] [stdout] 55 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for struct `Vec<{integer}>` in the current scope
[INFO] [stdout]   --> src/lib.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | buf.read(&mut buf);
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `read_at` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 48 | buf.read_at(&mut buf);
[INFO] [stdout]    |         +++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 0.23s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "469ab8e8d7784965dc0787c6936ce49c80e63457d702cdb9ad80c02c5404fc86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "469ab8e8d7784965dc0787c6936ce49c80e63457d702cdb9ad80c02c5404fc86", kill_on_drop: false }`
[INFO] [stdout] 469ab8e8d7784965dc0787c6936ce49c80e63457d702cdb9ad80c02c5404fc86