[INFO] updating cached repository https://github.com/gchp/tcp-test
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e612576dede748e0778ad1acdd9b7be46c0e3cdb
[INFO] checking gchp/tcp-test against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgchp%2Ftcp-test" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gchp/tcp-test on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/gchp/tcp-test
[INFO] finished tweaking git repo https://github.com/gchp/tcp-test
[INFO] tweaked toml for git repo https://github.com/gchp/tcp-test written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/gchp/tcp-test already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] 1cda8b7f69482e4160207a34b06cfac576d846f4566b851d68af47a2785537e4
[INFO] running `"docker" "start" "-a" "1cda8b7f69482e4160207a34b06cfac576d846f4566b851d68af47a2785537e4"`
[INFO] [stderr]     Checking tcp-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/bin/client.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Shutdown`
[INFO] [stderr]  --> src/bin/server.rs:3:40
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::{TcpListener, TcpStream, Shutdown};
[INFO] [stderr]   |                                        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Shutdown`
[INFO] [stderr]  --> src/bin/server.rs:3:40
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::{TcpListener, TcpStream, Shutdown};
[INFO] [stderr]   |                                        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]   --> src/bin/client.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let data = stream.read_to_string(&mut response);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/client.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut d =args().last().unwrap();
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/client.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     stream.shutdown(Shutdown::Write);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/client.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     stream.shutdown(Shutdown::Both);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/bin/client.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `push_all` found for struct `std::vec::Vec<_>` in the current scope
[INFO] [stderr]   --> src/bin/server.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |     return_data.push_all(&*raw);
[INFO] [stderr]    |                 ^^^^^^^^ method not found in `std::vec::Vec<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `push_all` found for struct `std::vec::Vec<_>` in the current scope
[INFO] [stderr]   --> src/bin/server.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |     return_data.push_all(&*data);
[INFO] [stderr]    |                 ^^^^^^^^ method not found in `std::vec::Vec<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `push_all` found for struct `std::vec::Vec<_>` in the current scope
[INFO] [stderr]   --> src/bin/server.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |     return_data.push_all(&*raw);
[INFO] [stderr]    |                 ^^^^^^^^ method not found in `std::vec::Vec<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `push_all` found for struct `std::vec::Vec<_>` in the current scope
[INFO] [stderr]   --> src/bin/server.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |     return_data.push_all(&*data);
[INFO] [stderr]    |                 ^^^^^^^^ method not found in `std::vec::Vec<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `tcp-test`.
[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] [stderr] warning: unused variable: `data`
[INFO] [stderr]   --> src/bin/client.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let data = stream.read_to_string(&mut response);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/client.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut d =args().last().unwrap();
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/client.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     stream.shutdown(Shutdown::Write);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/client.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     stream.shutdown(Shutdown::Both);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `tcp-test`.
[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] [stderr] error: build failed
[INFO] running `"docker" "inspect" "1cda8b7f69482e4160207a34b06cfac576d846f4566b851d68af47a2785537e4"`
[INFO] running `"docker" "rm" "-f" "1cda8b7f69482e4160207a34b06cfac576d846f4566b851d68af47a2785537e4"`
[INFO] [stdout] 1cda8b7f69482e4160207a34b06cfac576d846f4566b851d68af47a2785537e4
