[INFO] cloning repository https://github.com/squeed/tcpbench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/squeed/tcpbench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsqueed%2Ftcpbench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsqueed%2Ftcpbench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f27bcf1923db39913ccdc7c5e40abee9db7c037f
[INFO] testing squeed/tcpbench against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsqueed%2Ftcpbench" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/squeed/tcpbench on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/squeed/tcpbench
[INFO] finished tweaking git repo https://github.com/squeed/tcpbench
[INFO] tweaked toml for git repo https://github.com/squeed/tcpbench written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/squeed/tcpbench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num v0.1.41
[INFO] [stderr]   Downloaded backtrace v0.3.5
[INFO] [stderr]   Downloaded ansi_term v0.10.2
[INFO] [stderr]   Downloaded cc v1.0.4
[INFO] [stderr]   Downloaded num-bigint v0.1.41
[INFO] [stderr]   Downloaded num-complex v0.1.41
[INFO] [stderr]   Downloaded atty v0.2.6
[INFO] [stderr]   Downloaded num-traits v0.1.41
[INFO] [stderr]   Downloaded num-rational v0.1.40
[INFO] [stderr]   Downloaded clap v2.29.1
[INFO] [stderr]   Downloaded libc v0.2.36
[INFO] [stderr]   Downloaded streaming-stats v0.1.28
[INFO] [stderr]   Downloaded histo v0.1.0
[INFO] [stderr]   Downloaded winapi-x86_64-pc-windows-gnu v0.3.2
[INFO] [stderr]   Downloaded winapi-i686-pc-windows-gnu v0.3.2
[INFO] [stderr]   Downloaded winapi v0.3.3
[INFO] running `Command { std: "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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", 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] 45952b0696a2ba46b4fafa237edeb0555dadef2c5ddf9006197bfff7753a4f44
[INFO] running `Command { std: "docker" "start" "-a" "45952b0696a2ba46b4fafa237edeb0555dadef2c5ddf9006197bfff7753a4f44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45952b0696a2ba46b4fafa237edeb0555dadef2c5ddf9006197bfff7753a4f44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45952b0696a2ba46b4fafa237edeb0555dadef2c5ddf9006197bfff7753a4f44", kill_on_drop: false }`
[INFO] [stdout] 45952b0696a2ba46b4fafa237edeb0555dadef2c5ddf9006197bfff7753a4f44
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--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] d414f1022caa34e55cc1d36ac333ad2627bdfa29b6d2ab3cf245012e749c55ff
[INFO] running `Command { std: "docker" "start" "-a" "d414f1022caa34e55cc1d36ac333ad2627bdfa29b6d2ab3cf245012e749c55ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.4
[INFO] [stderr]    Compiling rustc-demangle v0.1.5
[INFO] [stderr]    Compiling atty v0.2.6
[INFO] [stderr]    Compiling num-complex v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.1.41
[INFO] [stderr]    Compiling clap v2.29.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling num-rational v0.1.40
[INFO] [stderr]    Compiling num v0.1.41
[INFO] [stderr]    Compiling streaming-stats v0.1.28
[INFO] [stderr]    Compiling histo v0.1.0
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling tcpbench v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     error_chain!{
[INFO] [stdout] 9  | |         foreign_links {
[INFO] [stdout] 10 | |             IO(::std::io::Error);
[INFO] [stdout] 11 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |         }
[INFO] [stdout] 22 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | /         loop {
[INFO] [stdout] 47 | |             let (mut s, _) = self.sock.accept()?;
[INFO] [stdout] 48 | |             s.set_nodelay(true)?;
[INFO] [stdout] 49 | |             loop {
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |             }
[INFO] [stdout] 58 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 59 |           Ok(())
[INFO] [stdout]    |           ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     error_chain!{
[INFO] [stdout] 9  | |         foreign_links {
[INFO] [stdout] 10 | |             IO(::std::io::Error);
[INFO] [stdout] 11 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |         }
[INFO] [stdout] 22 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:119:21
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 Err(e) => rr.failed_pings += 1,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_1`
[INFO] [stdout]    --> src/lib.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let t_1 = PreciseTime::now();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_t_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut s = TcpStream::connect(self.address.clone())?;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.95s
[INFO] running `Command { std: "docker" "inspect" "d414f1022caa34e55cc1d36ac333ad2627bdfa29b6d2ab3cf245012e749c55ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d414f1022caa34e55cc1d36ac333ad2627bdfa29b6d2ab3cf245012e749c55ff", kill_on_drop: false }`
[INFO] [stdout] d414f1022caa34e55cc1d36ac333ad2627bdfa29b6d2ab3cf245012e749c55ff
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7ebc9906d29e1232b0b863f7631cd6589cffdec67bb88dd69797d52b539b586
[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" "e7ebc9906d29e1232b0b863f7631cd6589cffdec67bb88dd69797d52b539b586", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     error_chain!{
[INFO] [stdout] 9  | |         foreign_links {
[INFO] [stdout] 10 | |             IO(::std::io::Error);
[INFO] [stdout] 11 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |         }
[INFO] [stdout] 22 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | /         loop {
[INFO] [stdout] 47 | |             let (mut s, _) = self.sock.accept()?;
[INFO] [stdout] 48 | |             s.set_nodelay(true)?;
[INFO] [stdout] 49 | |             loop {
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |             }
[INFO] [stdout] 58 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 59 |           Ok(())
[INFO] [stdout]    |           ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     error_chain!{
[INFO] [stdout] 9  | |         foreign_links {
[INFO] [stdout] 10 | |             IO(::std::io::Error);
[INFO] [stdout] 11 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |         }
[INFO] [stdout] 22 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tcpbench v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:119:21
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 Err(e) => rr.failed_pings += 1,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_1`
[INFO] [stdout]    --> src/lib.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let t_1 = PreciseTime::now();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_t_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut s = TcpStream::connect(self.address.clone())?;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     error_chain!{
[INFO] [stdout] 9  | |         foreign_links {
[INFO] [stdout] 10 | |             IO(::std::io::Error);
[INFO] [stdout] 11 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |         }
[INFO] [stdout] 22 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/lib.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | /         loop {
[INFO] [stdout] 47 | |             let (mut s, _) = self.sock.accept()?;
[INFO] [stdout] 48 | |             s.set_nodelay(true)?;
[INFO] [stdout] 49 | |             loop {
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |             }
[INFO] [stdout] 58 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 59 |           Ok(())
[INFO] [stdout]    |           ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     error_chain!{
[INFO] [stdout] 9  | |         foreign_links {
[INFO] [stdout] 10 | |             IO(::std::io::Error);
[INFO] [stdout] 11 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |         }
[INFO] [stdout] 22 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:119:21
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 Err(e) => rr.failed_pings += 1,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_1`
[INFO] [stdout]    --> src/lib.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let t_1 = PreciseTime::now();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_t_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut s = TcpStream::connect(self.address.clone())?;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "e7ebc9906d29e1232b0b863f7631cd6589cffdec67bb88dd69797d52b539b586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7ebc9906d29e1232b0b863f7631cd6589cffdec67bb88dd69797d52b539b586", kill_on_drop: false }`
[INFO] [stdout] e7ebc9906d29e1232b0b863f7631cd6589cffdec67bb88dd69797d52b539b586
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 923ec860ded7266492f232e34f7046a8d283e3a79862a7e30b250e497eecb2e6
[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" "923ec860ded7266492f232e34f7046a8d283e3a79862a7e30b250e497eecb2e6", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]   --> src/lib.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 | use std::thread;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:8:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | /     error_chain!{
[INFO] [stderr] 9  | |         foreign_links {
[INFO] [stderr] 10 | |             IO(::std::io::Error);
[INFO] [stderr] 11 | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |         }
[INFO] [stderr] 22 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/lib.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 46 | /         loop {
[INFO] [stderr] 47 | |             let (mut s, _) = self.sock.accept()?;
[INFO] [stderr] 48 | |             s.set_nodelay(true)?;
[INFO] [stderr] 49 | |             loop {
[INFO] [stderr] ...  |
[INFO] [stderr] 57 | |             }
[INFO] [stderr] 58 | |         }
[INFO] [stderr]    | |_________- any code following this expression is unreachable
[INFO] [stderr] 59 |           Ok(())
[INFO] [stderr]    |           ^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/lib.rs:8:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | /     error_chain!{
[INFO] [stderr] 9  | |         foreign_links {
[INFO] [stderr] 10 | |             IO(::std::io::Error);
[INFO] [stderr] 11 | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |         }
[INFO] [stderr] 22 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `impl_error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/lib.rs:119:21
[INFO] [stderr]     |
[INFO] [stderr] 119 |                 Err(e) => rr.failed_pings += 1,
[INFO] [stderr]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t_1`
[INFO] [stderr]    --> src/lib.rs:129:13
[INFO] [stderr]     |
[INFO] [stderr] 129 |         let t_1 = PreciseTime::now();
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_t_1`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 |         let mut s = TcpStream::connect(self.address.clone())?;
[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: `tcpbench` (lib) generated 7 warnings
[INFO] [stderr] warning: `tcpbench` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tcpbench-2a1d49c5af8725c2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tcpbench-f3bb8c53bdd59914)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tcpbench
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "923ec860ded7266492f232e34f7046a8d283e3a79862a7e30b250e497eecb2e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "923ec860ded7266492f232e34f7046a8d283e3a79862a7e30b250e497eecb2e6", kill_on_drop: false }`
[INFO] [stdout] 923ec860ded7266492f232e34f7046a8d283e3a79862a7e30b250e497eecb2e6