[INFO] fetching crate nbd 0.3.0...
[INFO] checking nbd-0.3.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] extracting crate nbd 0.3.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate nbd 0.3.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nbd 0.3.0
[INFO] finished tweaking crates.io crate nbd 0.3.0
[INFO] tweaked toml for crates.io crate nbd 0.3.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate nbd 0.3.0 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pipe v0.0.3
[INFO] [stderr]   Downloaded readwrite v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da6dda73de3a15944f1c3cdf14f8d3f3b3c7b22c8b4e9bb975b3f7204c72d7ca
[INFO] running `Command { std: "docker" "start" "-a" "da6dda73de3a15944f1c3cdf14f8d3f3b3c7b22c8b4e9bb975b3f7204c72d7ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da6dda73de3a15944f1c3cdf14f8d3f3b3c7b22c8b4e9bb975b3f7204c72d7ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da6dda73de3a15944f1c3cdf14f8d3f3b3c7b22c8b4e9bb975b3f7204c72d7ca", kill_on_drop: false }`
[INFO] [stdout] da6dda73de3a15944f1c3cdf14f8d3f3b3c7b22c8b4e9bb975b3f7204c72d7ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49b8d570fb66d161a9e9748ba8c832186dd432052f0bfc95492e528755bdac47
[INFO] running `Command { std: "docker" "start" "-a" "49b8d570fb66d161a9e9748ba8c832186dd432052f0bfc95492e528755bdac47", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking pipe v0.0.3
[INFO] [stderr]     Checking readwrite v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking nbd v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking proptest v0.8.7
[INFO] [stdout] error[E0277]: expected a `FnOnce(&str)` closure, found `&Export<_>`
[INFO] [stdout]    --> tests/fuzz_hs.rs:60:46
[INFO] [stdout]     |
[INFO] [stdout] 60  |         let ret = nbd::server::handshake(s, &exp);
[INFO] [stdout]     |                   ----------------------     ^^^ expected an `FnOnce(&str)` closure, found `&Export<_>`
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `for<'a> Fn<(&'a str,)>` is not implemented for `&Export<_>`, which is required by `for<'a> &Export<_>: FnOnce(&'a str)`
[INFO] [stdout]     = note: required for `&Export<_>` to implement `for<'a> FnOnce<(&'a str,)>`
[INFO] [stdout] note: required by a bound in `nbd::server::handshake`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:105:49
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn handshake<IO: Write + Read, Data, F: FnOnce(&str) -> Result<Export<Data>>>(mut c: IO, exports: F) -> Result<Data> {
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `handshake`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: expected a `FnOnce(&str)` closure, found `Export<_>`
[INFO] [stdout]    --> tests/fuzz_hs.rs:60:45
[INFO] [stdout]     |
[INFO] [stdout] 60  |         let ret = nbd::server::handshake(s, &exp);
[INFO] [stdout]     |                   ----------------------    ^^^^ expected an `FnOnce(&str)` closure, found `Export<_>`
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `for<'a> FnOnce<(&'a str,)>` is not implemented for `Export<_>`
[INFO] [stdout] note: required by a bound in `nbd::server::handshake`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:105:65
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn handshake<IO: Write + Read, Data, F: FnOnce(&str) -> Result<Export<Data>>>(mut c: IO, exports: F) -> Result<Data> {
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^^^ required by this bound in `handshake`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nbd` (test "fuzz_hs") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "49b8d570fb66d161a9e9748ba8c832186dd432052f0bfc95492e528755bdac47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49b8d570fb66d161a9e9748ba8c832186dd432052f0bfc95492e528755bdac47", kill_on_drop: false }`
[INFO] [stdout] 49b8d570fb66d161a9e9748ba8c832186dd432052f0bfc95492e528755bdac47