[INFO] fetching crate capgun 0.1.1...
[INFO] testing capgun-0.1.1 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate capgun 0.1.1 into /workspace/builds/worker-113/source
[INFO] validating manifest of crates.io crate capgun 0.1.1 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate capgun 0.1.1
[INFO] finished tweaking crates.io crate capgun 0.1.1
[INFO] tweaked toml for crates.io crate capgun 0.1.1 written to /workspace/builds/worker-113/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbd96ae8602145bc86f66870adff1a19b0404b12bd9fbb3adf87175157719244
[INFO] running `Command { std: "docker" "start" "-a" "cbd96ae8602145bc86f66870adff1a19b0404b12bd9fbb3adf87175157719244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbd96ae8602145bc86f66870adff1a19b0404b12bd9fbb3adf87175157719244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbd96ae8602145bc86f66870adff1a19b0404b12bd9fbb3adf87175157719244", kill_on_drop: false }`
[INFO] [stdout] cbd96ae8602145bc86f66870adff1a19b0404b12bd9fbb3adf87175157719244
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9eac27fdb59f60c64f3b5c7495169afca412f1fc8f84d40e57c157a94d06fcda
[INFO] running `Command { std: "docker" "start" "-a" "9eac27fdb59f60c64f3b5c7495169afca412f1fc8f84d40e57c157a94d06fcda", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling clap v0.11.0
[INFO] [stderr]    Compiling walkdir v0.1.8
[INFO] [stderr]    Compiling term v0.2.14
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling inotify v0.2.3
[INFO] [stderr]    Compiling filetime v0.1.15
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling notify v2.6.3
[INFO] [stderr]    Compiling capgun v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:18:3
[INFO] [stdout]    |
[INFO] [stdout] 18 |   try!(out.reset());
[INFO] [stdout]    |   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 |   try!(out.fg(color));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:20:3
[INFO] [stdout]    |
[INFO] [stdout] 20 |   try!(write!(&mut std::io::stdout(), "{:>12}", format!("Capgun {}", label)));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:21:3
[INFO] [stdout]    |
[INFO] [stdout] 21 |   try!(out.reset());
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:22:3
[INFO] [stdout]    |
[INFO] [stdout] 22 |   try!(write!(&mut std::io::stdout(), " {}\n", msg.into()));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 23 |   try!(out.flush());
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 |   try!(out.reset());
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:30:3
[INFO] [stdout]    |
[INFO] [stdout] 30 |   try!(out.fg(color::RED));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:31:3
[INFO] [stdout]    |
[INFO] [stdout] 31 |   try!(write!(&mut std::io::stderr(), "{:>12}", format!("Capgun {}", label)));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |   try!(out.reset());
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:33:3
[INFO] [stdout]    |
[INFO] [stdout] 33 |   try!(write!(&mut std::io::stderr(), " {}\n", msg.into()));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 |   try!(out.flush());
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]   --> src/main.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |         thread::sleep_ms(5000);
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.57s
[INFO] running `Command { std: "docker" "inspect" "9eac27fdb59f60c64f3b5c7495169afca412f1fc8f84d40e57c157a94d06fcda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eac27fdb59f60c64f3b5c7495169afca412f1fc8f84d40e57c157a94d06fcda", kill_on_drop: false }`
[INFO] [stdout] 9eac27fdb59f60c64f3b5c7495169afca412f1fc8f84d40e57c157a94d06fcda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8b13e8460481f1157b384648de0cf3bcede4238a23f5d9e6cf0eddc71fc68f0
[INFO] running `Command { std: "docker" "start" "-a" "d8b13e8460481f1157b384648de0cf3bcede4238a23f5d9e6cf0eddc71fc68f0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling capgun v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:18:3
[INFO] [stdout]    |
[INFO] [stdout] 18 |   try!(out.reset());
[INFO] [stdout]    |   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 |   try!(out.fg(color));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:20:3
[INFO] [stdout]    |
[INFO] [stdout] 20 |   try!(write!(&mut std::io::stdout(), "{:>12}", format!("Capgun {}", label)));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:21:3
[INFO] [stdout]    |
[INFO] [stdout] 21 |   try!(out.reset());
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:22:3
[INFO] [stdout]    |
[INFO] [stdout] 22 |   try!(write!(&mut std::io::stdout(), " {}\n", msg.into()));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 23 |   try!(out.flush());
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 |   try!(out.reset());
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:30:3
[INFO] [stdout]    |
[INFO] [stdout] 30 |   try!(out.fg(color::RED));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:31:3
[INFO] [stdout]    |
[INFO] [stdout] 31 |   try!(write!(&mut std::io::stderr(), "{:>12}", format!("Capgun {}", label)));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |   try!(out.reset());
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:33:3
[INFO] [stdout]    |
[INFO] [stdout] 33 |   try!(write!(&mut std::io::stderr(), " {}\n", msg.into()));
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 |   try!(out.flush());
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]   --> src/main.rs:66:17
[INFO] [stdout]    |
[INFO] [stdout] 66 |         thread::sleep_ms(5000);
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "d8b13e8460481f1157b384648de0cf3bcede4238a23f5d9e6cf0eddc71fc68f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8b13e8460481f1157b384648de0cf3bcede4238a23f5d9e6cf0eddc71fc68f0", kill_on_drop: false }`
[INFO] [stdout] d8b13e8460481f1157b384648de0cf3bcede4238a23f5d9e6cf0eddc71fc68f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c4d34ed9e9dc17bad94e1e36ad9fd7069f7335ef38a3e72cda6ed0b81f1e8f9f
[INFO] running `Command { std: "docker" "start" "-a" "c4d34ed9e9dc17bad94e1e36ad9fd7069f7335ef38a3e72cda6ed0b81f1e8f9f", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:18:3
[INFO] [stderr]    |
[INFO] [stderr] 18 |   try!(out.reset());
[INFO] [stderr]    |   ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:19:3
[INFO] [stderr]    |
[INFO] [stderr] 19 |   try!(out.fg(color));
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:20:3
[INFO] [stderr]    |
[INFO] [stderr] 20 |   try!(write!(&mut std::io::stdout(), "{:>12}", format!("Capgun {}", label)));
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:21:3
[INFO] [stderr]    |
[INFO] [stderr] 21 |   try!(out.reset());
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:22:3
[INFO] [stderr]    |
[INFO] [stderr] 22 |   try!(write!(&mut std::io::stdout(), " {}\n", msg.into()));
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:23:3
[INFO] [stderr]    |
[INFO] [stderr] 23 |   try!(out.flush());
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:29:3
[INFO] [stderr]    |
[INFO] [stderr] 29 |   try!(out.reset());
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:30:3
[INFO] [stderr]    |
[INFO] [stderr] 30 |   try!(out.fg(color::RED));
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:31:3
[INFO] [stderr]    |
[INFO] [stderr] 31 |   try!(write!(&mut std::io::stderr(), "{:>12}", format!("Capgun {}", label)));
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:32:3
[INFO] [stderr]    |
[INFO] [stderr] 32 |   try!(out.reset());
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:33:3
[INFO] [stderr]    |
[INFO] [stderr] 33 |   try!(write!(&mut std::io::stderr(), " {}\n", msg.into()));
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:34:3
[INFO] [stderr]    |
[INFO] [stderr] 34 |   try!(out.flush());
[INFO] [stderr]    |   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stderr]   --> src/main.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |         thread::sleep_ms(5000);
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `capgun` (bin "capgun" test) generated 13 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/capgun-eb7ee89bdf63f717)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/capgun-4846c50d4d2b23bc)
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests capgun
[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] [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" "c4d34ed9e9dc17bad94e1e36ad9fd7069f7335ef38a3e72cda6ed0b81f1e8f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4d34ed9e9dc17bad94e1e36ad9fd7069f7335ef38a3e72cda6ed0b81f1e8f9f", kill_on_drop: false }`
[INFO] [stdout] c4d34ed9e9dc17bad94e1e36ad9fd7069f7335ef38a3e72cda6ed0b81f1e8f9f
