[INFO] crate async-std 1.1.0 is already in cache
[INFO] checking async-std-1.1.0 against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] extracting crate async-std 1.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate async-std 1.1.0 on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate async-std 1.1.0
[INFO] removed 1 missing examples
[INFO] removed 1 missing tests
[INFO] finished tweaking crates.io crate async-std 1.1.0
[INFO] tweaked toml for crates.io crate async-std 1.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate async-std 1.1.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 88839b341a5c4f58fee6d860d2aa22f0b53651042db7b3cafd9e48de0ee69982
[INFO] running `"docker" "start" "-a" "88839b341a5c4f58fee6d860d2aa22f0b53651042db7b3cafd9e48de0ee69982"`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling serde v1.0.102
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[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.52
[INFO] [stderr]    Compiling curl-sys v0.4.24
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking rand_chacha v0.2.1
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[INFO] [stderr]     Checking async-std v1.1.0 (/opt/rustwide/workdir)
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[INFO] [stderr]     Checking serde_json v1.0.41
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[INFO] [stderr]    Compiling async-log-attributes v1.0.1
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[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]     Checking async-log v1.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.1
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[INFO] [stderr] error[E0599]: no method named `merge` found for type `async_std::net::tcp::listener::Incoming<'_>` in the current scope
[INFO] [stderr]   --> examples/tcp-ipv4-and-6-echo.rs:34:42
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut incoming = ipv4_incoming.merge(ipv6_incoming);
[INFO] [stderr]    |                                          ^^^^^ method not found in `async_std::net::tcp::listener::Incoming<'_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `async-std`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "88839b341a5c4f58fee6d860d2aa22f0b53651042db7b3cafd9e48de0ee69982"`
[INFO] running `"docker" "rm" "-f" "88839b341a5c4f58fee6d860d2aa22f0b53651042db7b3cafd9e48de0ee69982"`
[INFO] [stdout] 88839b341a5c4f58fee6d860d2aa22f0b53651042db7b3cafd9e48de0ee69982