[INFO] cloning repository https://github.com/BookOwl/rusty-markov
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BookOwl/rusty-markov" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBookOwl%2Frusty-markov", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBookOwl%2Frusty-markov'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5afc737327be960a072b240dcb8aee0b94066df2
[INFO] testing BookOwl/rusty-markov against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBookOwl%2Frusty-markov" "/workspace/builds/worker-63/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-63/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BookOwl/rusty-markov on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BookOwl/rusty-markov
[INFO] finished tweaking git repo https://github.com/BookOwl/rusty-markov
[INFO] tweaked toml for git repo https://github.com/BookOwl/rusty-markov written to /workspace/builds/worker-63/source/Cargo.toml
[INFO] crate git repo https://github.com/BookOwl/rusty-markov already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded vec_map v0.6.0
[INFO] [stderr]   Downloaded ansi_term v0.9.0
[INFO] [stderr]   Downloaded unicode-width v0.1.3
[INFO] [stderr]   Downloaded strsim v0.5.2
[INFO] [stderr]   Downloaded term_size v0.2.1
[INFO] [stderr]   Downloaded libc v0.2.17
[INFO] [stderr]   Downloaded unicode-segmentation v0.1.3
[INFO] [stderr]   Downloaded clap v2.19.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9107c62a72fcf6cb6d45abecff3f61ca29c20e80337764c33000399068e05c4d
[INFO] running `Command { std: "docker" "start" "-a" "9107c62a72fcf6cb6d45abecff3f61ca29c20e80337764c33000399068e05c4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9107c62a72fcf6cb6d45abecff3f61ca29c20e80337764c33000399068e05c4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9107c62a72fcf6cb6d45abecff3f61ca29c20e80337764c33000399068e05c4d", kill_on_drop: false }`
[INFO] [stdout] 9107c62a72fcf6cb6d45abecff3f61ca29c20e80337764c33000399068e05c4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f469b31b62bb190f0f82ff64af7a2faf9e4c9842a1036371dcd2e501b1b8c81
[INFO] running `Command { std: "docker" "start" "-a" "9f469b31b62bb190f0f82ff64af7a2faf9e4c9842a1036371dcd2e501b1b8c81", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.17
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling unicode-width v0.1.3
[INFO] [stderr]    Compiling unicode-segmentation v0.1.3
[INFO] [stderr]    Compiling strsim v0.5.2
[INFO] [stderr]    Compiling term_size v0.2.1
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling clap v2.19.1
[INFO] [stderr]    Compiling markov v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     try!(f.read_to_string(&mut s));
[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:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut f = try!(File::open(path));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:153:17
[INFO] [stdout]     |
[INFO] [stdout] 153 |     s.push_str(&try!(generate_sentence(&bigrams)));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:159:21
[INFO] [stdout]     |
[INFO] [stdout] 159 |         s.push_str(&try!(generate_sentence(&bigrams)));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.26s
[INFO] running `Command { std: "docker" "inspect" "9f469b31b62bb190f0f82ff64af7a2faf9e4c9842a1036371dcd2e501b1b8c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f469b31b62bb190f0f82ff64af7a2faf9e4c9842a1036371dcd2e501b1b8c81", kill_on_drop: false }`
[INFO] [stdout] 9f469b31b62bb190f0f82ff64af7a2faf9e4c9842a1036371dcd2e501b1b8c81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e975234a00c6d645f6faaad897a015499337bcd0b462ce29bcf3aab8e9fb456c
[INFO] running `Command { std: "docker" "start" "-a" "e975234a00c6d645f6faaad897a015499337bcd0b462ce29bcf3aab8e9fb456c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling markov v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     try!(f.read_to_string(&mut s));
[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:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut f = try!(File::open(path));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:153:17
[INFO] [stdout]     |
[INFO] [stdout] 153 |     s.push_str(&try!(generate_sentence(&bigrams)));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:159:21
[INFO] [stdout]     |
[INFO] [stdout] 159 |         s.push_str(&try!(generate_sentence(&bigrams)));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.09s
[INFO] running `Command { std: "docker" "inspect" "e975234a00c6d645f6faaad897a015499337bcd0b462ce29bcf3aab8e9fb456c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e975234a00c6d645f6faaad897a015499337bcd0b462ce29bcf3aab8e9fb456c", kill_on_drop: false }`
[INFO] [stdout] e975234a00c6d645f6faaad897a015499337bcd0b462ce29bcf3aab8e9fb456c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8883e2c1e1d3f69f7a559c98adf2695a89e5286b6d1ba66ff6c5c072bf560888
[INFO] running `Command { std: "docker" "start" "-a" "8883e2c1e1d3f69f7a559c98adf2695a89e5286b6d1ba66ff6c5c072bf560888", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     try!(f.read_to_string(&mut s));
[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:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut f = try!(File::open(path));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:153:17
[INFO] [stderr]     |
[INFO] [stderr] 153 |     s.push_str(&try!(generate_sentence(&bigrams)));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:159:21
[INFO] [stderr]     |
[INFO] [stderr] 159 |         s.push_str(&try!(generate_sentence(&bigrams)));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `markov` (bin "markov" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.46s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/markov-ace9077f39c52336)
[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" "8883e2c1e1d3f69f7a559c98adf2695a89e5286b6d1ba66ff6c5c072bf560888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8883e2c1e1d3f69f7a559c98adf2695a89e5286b6d1ba66ff6c5c072bf560888", kill_on_drop: false }`
[INFO] [stdout] 8883e2c1e1d3f69f7a559c98adf2695a89e5286b6d1ba66ff6c5c072bf560888