[INFO] updating cached repository devoidfury/rust-rserv
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/devoidfury/rust-rserv
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/devoidfury/rust-rserv" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/devoidfury/rust-rserv"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/devoidfury/rust-rserv'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/devoidfury/rust-rserv" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/devoidfury/rust-rserv"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/devoidfury/rust-rserv'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 791b15e3648b426d2c1886ec4be40c42ede587f5
[INFO] sha for GitHub repo devoidfury/rust-rserv: 791b15e3648b426d2c1886ec4be40c42ede587f5
[INFO] validating manifest of devoidfury/rust-rserv on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of devoidfury/rust-rserv on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing devoidfury/rust-rserv
[INFO] finished frobbing devoidfury/rust-rserv
[INFO] frobbed toml for devoidfury/rust-rserv written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/devoidfury/rust-rserv/Cargo.toml
[INFO] started frobbing devoidfury/rust-rserv
[INFO] finished frobbing devoidfury/rust-rserv
[INFO] frobbed toml for devoidfury/rust-rserv written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/devoidfury/rust-rserv/Cargo.toml
[INFO] crate devoidfury/rust-rserv already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/devoidfury/rust-rserv/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking devoidfury/rust-rserv against try#8ec8125bea94852768b56958f05da47666c21ab0 for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-2/try#8ec8125bea94852768b56958f05da47666c21ab0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/devoidfury/rust-rserv:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2eb7a6df3391f9c79df65463e90fb7b5c12f4e922c8d78d486e9e23124d75129
[INFO] running `"docker" "start" "-a" "2eb7a6df3391f9c79df65463e90fb7b5c12f4e922c8d78d486e9e23124d75129"`
[INFO] [stderr]     Checking websrv v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/server.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::iter;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Shutdown`
[INFO] [stderr]  --> src/server.rs:4:40
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::net::{TcpListener, TcpStream, Shutdown};
[INFO] [stderr]   |                                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sync_channel`
[INFO] [stderr]   --> src/server.rs:11:32
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::sync::mpsc::{channel, sync_channel, Sender};
[INFO] [stderr]    |                                ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/server.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::iter;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Shutdown`
[INFO] [stderr]  --> src/server.rs:4:40
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::net::{TcpListener, TcpStream, Shutdown};
[INFO] [stderr]   |                                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sync_channel`
[INFO] [stderr]   --> src/server.rs:11:32
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::sync::mpsc::{channel, sync_channel, Sender};
[INFO] [stderr]    |                                ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Next`
[INFO] [stderr]  --> src/middleware.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Next,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Err`
[INFO] [stderr]  --> src/middleware.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Err
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `jobs`
[INFO] [stderr]   --> src/server.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     jobs: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `idx`
[INFO] [stderr]   --> src/server.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     idx: usize
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/server.rs:58:21
[INFO] [stderr]    |
[INFO] [stderr] 58 |                     done_tx.send(worker_idx);
[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: variant is never constructed: `Next`
[INFO] [stderr]  --> src/middleware.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Next,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Err`
[INFO] [stderr]  --> src/middleware.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Err
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `jobs`
[INFO] [stderr]   --> src/server.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     jobs: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `idx`
[INFO] [stderr]   --> src/server.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     idx: usize
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/server.rs:58:21
[INFO] [stderr]    |
[INFO] [stderr] 58 |                     done_tx.send(worker_idx);
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `"docker" "inspect" "2eb7a6df3391f9c79df65463e90fb7b5c12f4e922c8d78d486e9e23124d75129"`
[INFO] running `"docker" "rm" "-f" "2eb7a6df3391f9c79df65463e90fb7b5c12f4e922c8d78d486e9e23124d75129"`
[INFO] [stdout] 2eb7a6df3391f9c79df65463e90fb7b5c12f4e922c8d78d486e9e23124d75129