[INFO] cloning repository https://github.com/pymongo/rust_first
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pymongo/rust_first" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpymongo%2Frust_first", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpymongo%2Frust_first'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97e8f995d9559f8943bbc6c242ce926a46afc7d6
[INFO] checking pymongo/rust_first against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpymongo%2Frust_first" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pymongo/rust_first on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pymongo/rust_first
[INFO] finished tweaking git repo https://github.com/pymongo/rust_first
[INFO] tweaked toml for git repo https://github.com/pymongo/rust_first written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 198c9997c0331373987480ff280d5180e5ff86ea926a28dec258a9d4df94850d
[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" "198c9997c0331373987480ff280d5180e5ff86ea926a28dec258a9d4df94850d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "198c9997c0331373987480ff280d5180e5ff86ea926a28dec258a9d4df94850d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "198c9997c0331373987480ff280d5180e5ff86ea926a28dec258a9d4df94850d", kill_on_drop: false }`
[INFO] [stdout] 198c9997c0331373987480ff280d5180e5ff86ea926a28dec258a9d4df94850d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 95231a8a0450666dd329b19dd496b533a0b9b316c58b0d028f6c85c8ce9c2d04
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[INFO] [stdout] error[E0601]: `main` function not found in crate `file_desciptor`
[INFO] [stdout]   --> examples/file_desciptor.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / //! https://stackoverflow.com/questions/27665396/how-can-i-read-from-a-specific-raw-file-descriptor-in-rust
[INFO] [stdout] 2  | | //! TODO 该链接的代码在Linux/mac系统上都跑不了，在playground上能跑，但如果fd指定了除012以外的index会报错OSError: Bad file descriptor                              ...
[INFO] [stdout] 3  | | //! file descriptors index into a per-process file descriptor table maintained by the kernel
[INFO] [stdout] 4  | | //! 文件描述符在数据结构上是非负整数，每个进程都有各自的文件描述符表，其中0-2分别是stdin,stdout,stderr
[INFO] [stdout] ...  |
[INFO] [stdout] 16 | |     println!("std::os::unix::io::FromFawFd is only support in Linux");
[INFO] [stdout] 17 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/file_desciptor.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learn_rust`
[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[E0432]: unresolved import `bytes::buf::BufExt`
[INFO] [stdout]  --> examples/hyper_http_client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bytes::buf::BufExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^------
[INFO] [stdout]   |     |           |
[INFO] [stdout]   |     |           help: a similar name exists in the module: `BufMut`
[INFO] [stdout]   |     no `BufExt` in `buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `reader` found for opaque type `impl hyper::body::Buf` in the current scope
[INFO] [stdout]   --> examples/hyper_http_client.rs:10:72
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let res_json: serde_json::Value = serde_json::from_reader(res_body.reader())?;
[INFO] [stdout]    |                                                                        ^^^^^^ method not found in `impl hyper::body::Buf`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 1  | use bytes::buf::ext::BufExt;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `reader` found for opaque type `impl hyper::body::Buf` in the current scope
[INFO] [stdout]   --> examples/hyper_http_client.rs:20:68
[INFO] [stdout]    |
[INFO] [stdout] 20 |         serde_json::from_reader(hyper::body::aggregate(res).await?.reader())?;
[INFO] [stdout]    |                                                                    ^^^^^^ method not found in `impl hyper::body::Buf`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 1  | use bytes::buf::ext::BufExt;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "95231a8a0450666dd329b19dd496b533a0b9b316c58b0d028f6c85c8ce9c2d04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95231a8a0450666dd329b19dd496b533a0b9b316c58b0d028f6c85c8ce9c2d04", kill_on_drop: false }`
[INFO] [stdout] 95231a8a0450666dd329b19dd496b533a0b9b316c58b0d028f6c85c8ce9c2d04