[INFO] updating cached repository mdenchev/tictactoe [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/mdenchev/tictactoe [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/mdenchev/tictactoe" "work/ex/beta-1.38-1/sources/1.37.0/gh/mdenchev/tictactoe"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mdenchev/tictactoe'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/mdenchev/tictactoe" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mdenchev/tictactoe"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mdenchev/tictactoe'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] ee389ebfe23632834be8f9de7079adffb0dff031 [INFO] sha for GitHub repo mdenchev/tictactoe: ee389ebfe23632834be8f9de7079adffb0dff031 [INFO] validating manifest of mdenchev/tictactoe on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of mdenchev/tictactoe on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing mdenchev/tictactoe [INFO] finished frobbing mdenchev/tictactoe [INFO] frobbed toml for mdenchev/tictactoe written to work/ex/beta-1.38-1/sources/1.37.0/gh/mdenchev/tictactoe/Cargo.toml [INFO] started frobbing mdenchev/tictactoe [INFO] finished frobbing mdenchev/tictactoe [INFO] frobbed toml for mdenchev/tictactoe written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mdenchev/tictactoe/Cargo.toml [INFO] crate mdenchev/tictactoe already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mdenchev/tictactoe/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needs to be updated but --locked was passed to prevent this [INFO] the lockfile is outdated, regenerating it [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing mdenchev/tictactoe against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mdenchev/tictactoe:/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=warn" "-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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] 12119a714c5978a0c09827a41dfd990a8db70f3fe957fdc775666a7fa0c08d40 [INFO] running `"docker" "start" "-a" "12119a714c5978a0c09827a41dfd990a8db70f3fe957fdc775666a7fa0c08d40"` [INFO] [stderr] Compiling tictactoe v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/network.rs:32:40 [INFO] [stderr] | [INFO] [stderr] 32 | let end = cmp::min(8 + length, (self.raw.len() as u32)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::mem` [INFO] [stderr] --> src/main.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use std::mem; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:50:9 [INFO] [stderr] | [INFO] [stderr] 50 | let mut stream = try!(TcpStream::connect(server)); [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: struct is never constructed: `NetworkAdapter` [INFO] [stderr] --> src/network.rs:8:1 [INFO] [stderr] | [INFO] [stderr] 8 | struct NetworkAdapter<'a> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/network.rs:14:5 [INFO] [stderr] | [INFO] [stderr] 14 | pub fn new(raw: &'a [u8]) -> Result, &str> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `get_version` [INFO] [stderr] --> src/network.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | pub fn get_version(&self) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `get_length` [INFO] [stderr] --> src/network.rs:26:5 [INFO] [stderr] | [INFO] [stderr] 26 | pub fn get_length(&self) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `get_data` [INFO] [stderr] --> src/network.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | pub fn get_data(&self) -> &'a [u8] { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `read_u32` [INFO] [stderr] --> src/network.rs:38:1 [INFO] [stderr] | [INFO] [stderr] 38 | fn read_u32(data: &[u8]) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `find_match` [INFO] [stderr] --> src/main.rs:57:1 [INFO] [stderr] | [INFO] [stderr] 57 | fn find_match(stream: &mut TcpStream) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:96:13 [INFO] [stderr] | [INFO] [stderr] 96 | connect_to_server(); [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 1.74s [INFO] running `"docker" "inspect" "12119a714c5978a0c09827a41dfd990a8db70f3fe957fdc775666a7fa0c08d40"` [INFO] running `"docker" "rm" "-f" "12119a714c5978a0c09827a41dfd990a8db70f3fe957fdc775666a7fa0c08d40"` [INFO] [stdout] 12119a714c5978a0c09827a41dfd990a8db70f3fe957fdc775666a7fa0c08d40 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mdenchev/tictactoe:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 83245258b375bcaeae6051e47af390d26ede101c550736df850bdf553d9c6454 [INFO] running `"docker" "start" "-a" "83245258b375bcaeae6051e47af390d26ede101c550736df850bdf553d9c6454"` [INFO] [stderr] Compiling tictactoe v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/network.rs:32:40 [INFO] [stderr] | [INFO] [stderr] 32 | let end = cmp::min(8 + length, (self.raw.len() as u32)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::mem` [INFO] [stderr] --> src/main.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use std::mem; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:50:9 [INFO] [stderr] | [INFO] [stderr] 50 | let mut stream = try!(TcpStream::connect(server)); [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: struct is never constructed: `NetworkAdapter` [INFO] [stderr] --> src/network.rs:8:1 [INFO] [stderr] | [INFO] [stderr] 8 | struct NetworkAdapter<'a> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/network.rs:14:5 [INFO] [stderr] | [INFO] [stderr] 14 | pub fn new(raw: &'a [u8]) -> Result, &str> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `get_version` [INFO] [stderr] --> src/network.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | pub fn get_version(&self) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `get_length` [INFO] [stderr] --> src/network.rs:26:5 [INFO] [stderr] | [INFO] [stderr] 26 | pub fn get_length(&self) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `get_data` [INFO] [stderr] --> src/network.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | pub fn get_data(&self) -> &'a [u8] { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `read_u32` [INFO] [stderr] --> src/network.rs:38:1 [INFO] [stderr] | [INFO] [stderr] 38 | fn read_u32(data: &[u8]) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `find_match` [INFO] [stderr] --> src/main.rs:57:1 [INFO] [stderr] | [INFO] [stderr] 57 | fn find_match(stream: &mut TcpStream) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:96:13 [INFO] [stderr] | [INFO] [stderr] 96 | connect_to_server(); [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 1.45s [INFO] running `"docker" "inspect" "83245258b375bcaeae6051e47af390d26ede101c550736df850bdf553d9c6454"` [INFO] running `"docker" "rm" "-f" "83245258b375bcaeae6051e47af390d26ede101c550736df850bdf553d9c6454"` [INFO] [stdout] 83245258b375bcaeae6051e47af390d26ede101c550736df850bdf553d9c6454 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mdenchev/tictactoe:/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=warn" "-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" "+1.37.0" "test" "--frozen"` [INFO] [stdout] 48a63e7ea919478f5c024bf80431a4f2a444ff445ab982fdc95db5adbfcce4bb [INFO] running `"docker" "start" "-a" "48a63e7ea919478f5c024bf80431a4f2a444ff445ab982fdc95db5adbfcce4bb"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/tictactoe-57711f3942aff079 [INFO] [stderr] Running /opt/crater/target/debug/deps/tictactoe-b65d6eae23c33af3 [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 [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 [INFO] [stdout] [INFO] [stderr] Doc-tests tictactoe [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 [INFO] [stdout] [INFO] running `"docker" "inspect" "48a63e7ea919478f5c024bf80431a4f2a444ff445ab982fdc95db5adbfcce4bb"` [INFO] running `"docker" "rm" "-f" "48a63e7ea919478f5c024bf80431a4f2a444ff445ab982fdc95db5adbfcce4bb"` [INFO] [stdout] 48a63e7ea919478f5c024bf80431a4f2a444ff445ab982fdc95db5adbfcce4bb