[INFO] updating cached repository https://github.com/zhangrxiang/hello-rust [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] [stderr] From https://github.com/zhangrxiang/hello-rust [INFO] [stderr] e242892..2a4b69e master -> master [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 2a4b69eaa42f4d572d41e29ea7eb6b5011da183b [INFO] testing zhangrxiang/hello-rust against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhangrxiang%2Fhello-rust" "/workspace/builds/worker-7/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/zhangrxiang/hello-rust on toolchain 28742a1146f10a4f09369baad027a464acb7a766 [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/zhangrxiang/hello-rust [INFO] finished tweaking git repo https://github.com/zhangrxiang/hello-rust [INFO] tweaked toml for git repo https://github.com/zhangrxiang/hello-rust written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/zhangrxiang/hello-rust already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 5b2f03e1f3144be3fa28b0bd0692972791256e244e4873aa676d6a4f0fec24b4 [INFO] running `"docker" "start" "-a" "5b2f03e1f3144be3fa28b0bd0692972791256e244e4873aa676d6a4f0fec24b4"` [INFO] [stderr] Compiling cc v1.0.47 [INFO] [stderr] Compiling rustc-demangle v0.1.16 [INFO] [stderr] Compiling rustc-serialize v0.3.24 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling rand v0.3.23 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Compiling chrono v0.4.11 [INFO] [stderr] Compiling backtrace v0.3.40 [INFO] [stderr] Compiling error-chain v0.10.0 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Compiling ferris-says v0.1.1 [INFO] [stderr] Compiling hello-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: multiple patterns covering the same range [INFO] [stderr] --> src/learn/match_test.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 14 | 13...39 => println!("A teen"), [INFO] [stderr] | ------- this range overlaps on `39u8` [INFO] [stderr] 15 | 39..=90 => println!("B teen"), [INFO] [stderr] | ^^^^^^^ overlapping patterns [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(overlapping_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/test/conversion.rs:48:13 [INFO] [stderr] | [INFO] [stderr] 48 | let mut contents = fs::read_to_string(&file_name)?; [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: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 42.80s [INFO] running `"docker" "inspect" "5b2f03e1f3144be3fa28b0bd0692972791256e244e4873aa676d6a4f0fec24b4"` [INFO] running `"docker" "rm" "-f" "5b2f03e1f3144be3fa28b0bd0692972791256e244e4873aa676d6a4f0fec24b4"` [INFO] [stdout] 5b2f03e1f3144be3fa28b0bd0692972791256e244e4873aa676d6a4f0fec24b4 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"` [INFO] [stdout] 2a492d0a388201bc16eb6d6e9fc775f9b01fbee21d021872cbd379fdcb144d8a [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "2a492d0a388201bc16eb6d6e9fc775f9b01fbee21d021872cbd379fdcb144d8a"` [INFO] [stderr] Compiling hello-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/lib/rand.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | / /** [INFO] [stderr] 9 | | ThreadRng { [INFO] [stderr] 10 | | rng: RefCell { [INFO] [stderr] 11 | | value: ReseedingRng { [INFO] [stderr] ... | [INFO] [stderr] 20 | | } [INFO] [stderr] 21 | | */ [INFO] [stderr] | |__________^ rustdoc does not generate documentation for macros [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stderr] = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion [INFO] [stderr] [INFO] [stderr] warning: multiple patterns covering the same range [INFO] [stderr] --> src/learn/match_test.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 14 | 13...39 => println!("A teen"), [INFO] [stderr] | ------- this range overlaps on `39u8` [INFO] [stderr] 15 | 39..=90 => println!("B teen"), [INFO] [stderr] | ^^^^^^^ overlapping patterns [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(overlapping_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/test/match_test.rs:102:9 [INFO] [stderr] | [INFO] [stderr] 101 | a => println!("{}", a), [INFO] [stderr] | - matches any value [INFO] [stderr] 102 | ref a => println!("{}", a), [INFO] [stderr] | ^^^^^ unreachable pattern [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/test/match_test.rs:103:9 [INFO] [stderr] | [INFO] [stderr] 101 | a => println!("{}", a), [INFO] [stderr] | - matches any value [INFO] [stderr] 102 | ref a => println!("{}", a), [INFO] [stderr] 103 | ref mut m => { [INFO] [stderr] | ^^^^^^^^^ unreachable pattern [INFO] [stderr] [INFO] [stderr] warning: unused variable: `result` [INFO] [stderr] --> src/learn/net2.rs:35:17 [INFO] [stderr] | [INFO] [stderr] 35 | let result = match stream.read(&mut buf2) { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/learn/net2.rs:40:21 [INFO] [stderr] | [INFO] [stderr] 40 | Err(err) => { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `larger` [INFO] [stderr] --> src/learn/test.rs:26:13 [INFO] [stderr] | [INFO] [stderr] 26 | let larger = Rectangle { width: 8, height: 7 }; [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_larger` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/learn/fs.rs:38:13 [INFO] [stderr] | [INFO] [stderr] 38 | let mut f = File::create("foo.txt")?; [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:44:13 [INFO] [stderr] | [INFO] [stderr] 44 | let file = OpenOptions::new().read(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `perms` [INFO] [stderr] --> src/learn/fs.rs:118:13 [INFO] [stderr] | [INFO] [stderr] 118 | let mut perms = file.metadata()?.permissions(); [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perms` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `attr` [INFO] [stderr] --> src/learn/fs.rs:364:13 [INFO] [stderr] | [INFO] [stderr] 364 | let attr = fs::metadata("/some/file/path.txt")?; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_attr` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `attr` [INFO] [stderr] --> src/learn/fs.rs:371:13 [INFO] [stderr] | [INFO] [stderr] 371 | let attr = fs::symlink_metadata("symlink.txt")?; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_attr` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:131:17 [INFO] [stderr] | [INFO] [stderr] 131 | let file = options.read(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:136:17 [INFO] [stderr] | [INFO] [stderr] 136 | let file = OpenOptions::new().read(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:141:17 [INFO] [stderr] | [INFO] [stderr] 141 | let file = OpenOptions::new().write(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:146:17 [INFO] [stderr] | [INFO] [stderr] 146 | let file = OpenOptions::new().append(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:151:17 [INFO] [stderr] | [INFO] [stderr] 151 | let file = OpenOptions::new().truncate(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:156:17 [INFO] [stderr] | [INFO] [stderr] 156 | let file = OpenOptions::new().create(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:161:17 [INFO] [stderr] | [INFO] [stderr] 161 | let file = OpenOptions::new() [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s2` [INFO] [stderr] --> src/learn/macros.rs:198:13 [INFO] [stderr] | [INFO] [stderr] 198 | let s2 = format_args!("hello {}", "world"); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `buffer2` [INFO] [stderr] --> src/learn/io.rs:28:13 [INFO] [stderr] | [INFO] [stderr] 28 | let mut buffer2 = String::from("hello world"); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `local_dt` [INFO] [stderr] --> src/lib/chrono.rs:36:13 [INFO] [stderr] | [INFO] [stderr] 36 | let local_dt = Local.ymd(2014, 7, 8).and_hms_milli(9, 10, 11, 12); [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_local_dt` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ref_to_x` [INFO] [stderr] --> src/test/custom_types.rs:42:20 [INFO] [stderr] | [INFO] [stderr] 42 | let Point { x: ref_to_x, y: a } = point; [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ref_to_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/test/custom_types.rs:42:33 [INFO] [stderr] | [INFO] [stderr] 42 | let Point { x: ref_to_x, y: a } = point; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `Work` [INFO] [stderr] --> src/test/custom_types.rs:149:13 [INFO] [stderr] | [INFO] [stderr] 149 | Work => println!("soldiers fight"), [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_Work` [INFO] [stderr] [INFO] [stderr] warning: variable `inferred_type` is assigned to, but never used [INFO] [stderr] --> src/test/primitives.rs:14:9 [INFO] [stderr] | [INFO] [stderr] 14 | let mut inferred_type = 12; // Type i64 is inferred from another line [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_inferred_type` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `inferred_type` is never read [INFO] [stderr] --> src/test/primitives.rs:15:5 [INFO] [stderr] | [INFO] [stderr] 15 | inferred_type = 4294967296i64; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable `mutable` is assigned to, but never used [INFO] [stderr] --> src/test/primitives.rs:18:9 [INFO] [stderr] | [INFO] [stderr] 18 | let mut mutable = 12; // Mutable `i32` [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_mutable` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `mutable` is never read [INFO] [stderr] --> src/test/primitives.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | mutable = 21; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/net2.rs:11:13 [INFO] [stderr] | [INFO] [stderr] 11 | let mut sparkle_heart = vec![70]; [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: variable does not need to be mutable [INFO] [stderr] --> src/learn/net2.rs:31:21 [INFO] [stderr] | [INFO] [stderr] 31 | let mut buf = [66, 67, 68, 69, 70]; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:38:13 [INFO] [stderr] | [INFO] [stderr] 38 | let mut f = File::create("foo.txt")?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:84:13 [INFO] [stderr] | [INFO] [stderr] 84 | let mut f = File::create("foo.txt")?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:91:13 [INFO] [stderr] | [INFO] [stderr] 91 | let mut f = File::open("foo.txt")?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:108:13 [INFO] [stderr] | [INFO] [stderr] 108 | let mut file = File::open("foo.txt")?; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:118:13 [INFO] [stderr] | [INFO] [stderr] 118 | let mut perms = file.metadata()?.permissions(); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:246:17 [INFO] [stderr] | [INFO] [stderr] 246 | let mut f = File::create("foo.txt")?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/io.rs:28:13 [INFO] [stderr] | [INFO] [stderr] 28 | let mut buffer2 = String::from("hello world"); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib/box_test.rs:41:13 [INFO] [stderr] | [INFO] [stderr] 41 | let mut x = Box::from([1_u8, 2, 3]); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib/rand.rs:6:13 [INFO] [stderr] | [INFO] [stderr] 6 | let mut rng = rand::thread_rng(); [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib/slice.rs:34:13 [INFO] [stderr] | [INFO] [stderr] 34 | let mut z = &[0, 1, 2]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/test/conversion.rs:48:13 [INFO] [stderr] | [INFO] [stderr] 48 | let mut contents = fs::read_to_string(&file_name)?; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/learn/net2.rs:30:13 [INFO] [stderr] | [INFO] [stderr] 30 | #[derive(Debug)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_attributes)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/learn/net2.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | #[derive(Debug)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/net2.rs:26:9 [INFO] [stderr] | [INFO] [stderr] 26 | stream.set_read_timeout(Some(Duration::new(0, 0))); [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: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/net2.rs:27:9 [INFO] [stderr] | [INFO] [stderr] 27 | stream.set_write_timeout(Some(Duration::new(0, 0))); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/net2.rs:34:13 [INFO] [stderr] | [INFO] [stderr] 34 | stream.write(&buf); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/fs.rs:357:9 [INFO] [stderr] | [INFO] [stderr] 357 | fs::write("a.txt", "test"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/macros.rs:125:9 [INFO] [stderr] | [INFO] [stderr] 125 | write(); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/macros.rs:129:9 [INFO] [stderr] | [INFO] [stderr] 129 | write!(&mut s, "{} {}", "abc", 123); // uses fmt::Write::write_fmt [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/macros.rs:130:9 [INFO] [stderr] | [INFO] [stderr] 130 | write!(&mut v, "s = {:?}", s); // uses io::Write::write_fmt [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/macros.rs:156:9 [INFO] [stderr] | [INFO] [stderr] 156 | main(); [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/macros.rs:166:9 [INFO] [stderr] | [INFO] [stderr] 166 | main2(); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: variable `Work` should have a snake case name [INFO] [stderr] --> src/test/custom_types.rs:149:13 [INFO] [stderr] | [INFO] [stderr] 149 | Work => println!("soldiers fight"), [INFO] [stderr] | ^^^^ help: convert the identifier to snake case (notice the capitalization): `work` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 54 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 7.38s [INFO] running `"docker" "inspect" "2a492d0a388201bc16eb6d6e9fc775f9b01fbee21d021872cbd379fdcb144d8a"` [INFO] running `"docker" "rm" "-f" "2a492d0a388201bc16eb6d6e9fc775f9b01fbee21d021872cbd379fdcb144d8a"` [INFO] [stdout] 2a492d0a388201bc16eb6d6e9fc775f9b01fbee21d021872cbd379fdcb144d8a [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"` [INFO] [stdout] debed4067c6a236d49f079b561ee55fc7cb69d7e1214a8f73ed52c174ed39464 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "debed4067c6a236d49f079b561ee55fc7cb69d7e1214a8f73ed52c174ed39464"` [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/lib/rand.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | / /** [INFO] [stderr] 9 | | ThreadRng { [INFO] [stderr] 10 | | rng: RefCell { [INFO] [stderr] 11 | | value: ReseedingRng { [INFO] [stderr] ... | [INFO] [stderr] 20 | | } [INFO] [stderr] 21 | | */ [INFO] [stderr] | |__________^ rustdoc does not generate documentation for macros [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stderr] = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion [INFO] [stderr] [INFO] [stderr] warning: multiple patterns covering the same range [INFO] [stderr] --> src/learn/match_test.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 14 | 13...39 => println!("A teen"), [INFO] [stderr] | ------- this range overlaps on `39u8` [INFO] [stderr] 15 | 39..=90 => println!("B teen"), [INFO] [stderr] | ^^^^^^^ overlapping patterns [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(overlapping_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/test/match_test.rs:102:9 [INFO] [stderr] | [INFO] [stderr] 101 | a => println!("{}", a), [INFO] [stderr] | - matches any value [INFO] [stderr] 102 | ref a => println!("{}", a), [INFO] [stderr] | ^^^^^ unreachable pattern [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/test/match_test.rs:103:9 [INFO] [stderr] | [INFO] [stderr] 101 | a => println!("{}", a), [INFO] [stderr] | - matches any value [INFO] [stderr] 102 | ref a => println!("{}", a), [INFO] [stderr] 103 | ref mut m => { [INFO] [stderr] | ^^^^^^^^^ unreachable pattern [INFO] [stderr] [INFO] [stderr] warning: unused variable: `result` [INFO] [stderr] --> src/learn/net2.rs:35:17 [INFO] [stderr] | [INFO] [stderr] 35 | let result = match stream.read(&mut buf2) { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/learn/net2.rs:40:21 [INFO] [stderr] | [INFO] [stderr] 40 | Err(err) => { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `larger` [INFO] [stderr] --> src/learn/test.rs:26:13 [INFO] [stderr] | [INFO] [stderr] 26 | let larger = Rectangle { width: 8, height: 7 }; [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_larger` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/learn/fs.rs:38:13 [INFO] [stderr] | [INFO] [stderr] 38 | let mut f = File::create("foo.txt")?; [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:44:13 [INFO] [stderr] | [INFO] [stderr] 44 | let file = OpenOptions::new().read(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `perms` [INFO] [stderr] --> src/learn/fs.rs:118:13 [INFO] [stderr] | [INFO] [stderr] 118 | let mut perms = file.metadata()?.permissions(); [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_perms` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `attr` [INFO] [stderr] --> src/learn/fs.rs:364:13 [INFO] [stderr] | [INFO] [stderr] 364 | let attr = fs::metadata("/some/file/path.txt")?; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_attr` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `attr` [INFO] [stderr] --> src/learn/fs.rs:371:13 [INFO] [stderr] | [INFO] [stderr] 371 | let attr = fs::symlink_metadata("symlink.txt")?; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_attr` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:131:17 [INFO] [stderr] | [INFO] [stderr] 131 | let file = options.read(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:136:17 [INFO] [stderr] | [INFO] [stderr] 136 | let file = OpenOptions::new().read(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:141:17 [INFO] [stderr] | [INFO] [stderr] 141 | let file = OpenOptions::new().write(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:146:17 [INFO] [stderr] | [INFO] [stderr] 146 | let file = OpenOptions::new().append(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:151:17 [INFO] [stderr] | [INFO] [stderr] 151 | let file = OpenOptions::new().truncate(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:156:17 [INFO] [stderr] | [INFO] [stderr] 156 | let file = OpenOptions::new().create(true).open("foo.txt"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file` [INFO] [stderr] --> src/learn/fs.rs:161:17 [INFO] [stderr] | [INFO] [stderr] 161 | let file = OpenOptions::new() [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s2` [INFO] [stderr] --> src/learn/macros.rs:198:13 [INFO] [stderr] | [INFO] [stderr] 198 | let s2 = format_args!("hello {}", "world"); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `buffer2` [INFO] [stderr] --> src/learn/io.rs:28:13 [INFO] [stderr] | [INFO] [stderr] 28 | let mut buffer2 = String::from("hello world"); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `local_dt` [INFO] [stderr] --> src/lib/chrono.rs:36:13 [INFO] [stderr] | [INFO] [stderr] 36 | let local_dt = Local.ymd(2014, 7, 8).and_hms_milli(9, 10, 11, 12); [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_local_dt` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ref_to_x` [INFO] [stderr] --> src/test/custom_types.rs:42:20 [INFO] [stderr] | [INFO] [stderr] 42 | let Point { x: ref_to_x, y: a } = point; [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ref_to_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/test/custom_types.rs:42:33 [INFO] [stderr] | [INFO] [stderr] 42 | let Point { x: ref_to_x, y: a } = point; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `Work` [INFO] [stderr] --> src/test/custom_types.rs:149:13 [INFO] [stderr] | [INFO] [stderr] 149 | Work => println!("soldiers fight"), [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_Work` [INFO] [stderr] [INFO] [stderr] warning: variable `inferred_type` is assigned to, but never used [INFO] [stderr] --> src/test/primitives.rs:14:9 [INFO] [stderr] | [INFO] [stderr] 14 | let mut inferred_type = 12; // Type i64 is inferred from another line [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_inferred_type` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `inferred_type` is never read [INFO] [stderr] --> src/test/primitives.rs:15:5 [INFO] [stderr] | [INFO] [stderr] 15 | inferred_type = 4294967296i64; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable `mutable` is assigned to, but never used [INFO] [stderr] --> src/test/primitives.rs:18:9 [INFO] [stderr] | [INFO] [stderr] 18 | let mut mutable = 12; // Mutable `i32` [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_mutable` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `mutable` is never read [INFO] [stderr] --> src/test/primitives.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | mutable = 21; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/net2.rs:11:13 [INFO] [stderr] | [INFO] [stderr] 11 | let mut sparkle_heart = vec![70]; [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: variable does not need to be mutable [INFO] [stderr] --> src/learn/net2.rs:31:21 [INFO] [stderr] | [INFO] [stderr] 31 | let mut buf = [66, 67, 68, 69, 70]; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:38:13 [INFO] [stderr] | [INFO] [stderr] 38 | let mut f = File::create("foo.txt")?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:84:13 [INFO] [stderr] | [INFO] [stderr] 84 | let mut f = File::create("foo.txt")?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:91:13 [INFO] [stderr] | [INFO] [stderr] 91 | let mut f = File::open("foo.txt")?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:108:13 [INFO] [stderr] | [INFO] [stderr] 108 | let mut file = File::open("foo.txt")?; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:118:13 [INFO] [stderr] | [INFO] [stderr] 118 | let mut perms = file.metadata()?.permissions(); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/fs.rs:246:17 [INFO] [stderr] | [INFO] [stderr] 246 | let mut f = File::create("foo.txt")?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/learn/io.rs:28:13 [INFO] [stderr] | [INFO] [stderr] 28 | let mut buffer2 = String::from("hello world"); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib/box_test.rs:41:13 [INFO] [stderr] | [INFO] [stderr] 41 | let mut x = Box::from([1_u8, 2, 3]); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib/rand.rs:6:13 [INFO] [stderr] | [INFO] [stderr] 6 | let mut rng = rand::thread_rng(); [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib/slice.rs:34:13 [INFO] [stderr] | [INFO] [stderr] 34 | let mut z = &[0, 1, 2]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/test/conversion.rs:48:13 [INFO] [stderr] | [INFO] [stderr] 48 | let mut contents = fs::read_to_string(&file_name)?; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/learn/net2.rs:30:13 [INFO] [stderr] | [INFO] [stderr] 30 | #[derive(Debug)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_attributes)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused attribute [INFO] [stderr] --> src/learn/net2.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | #[derive(Debug)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/net2.rs:26:9 [INFO] [stderr] | [INFO] [stderr] 26 | stream.set_read_timeout(Some(Duration::new(0, 0))); [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: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/net2.rs:27:9 [INFO] [stderr] | [INFO] [stderr] 27 | stream.set_write_timeout(Some(Duration::new(0, 0))); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/net2.rs:34:13 [INFO] [stderr] | [INFO] [stderr] 34 | stream.write(&buf); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/fs.rs:357:9 [INFO] [stderr] | [INFO] [stderr] 357 | fs::write("a.txt", "test"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/macros.rs:125:9 [INFO] [stderr] | [INFO] [stderr] 125 | write(); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/macros.rs:129:9 [INFO] [stderr] | [INFO] [stderr] 129 | write!(&mut s, "{} {}", "abc", 123); // uses fmt::Write::write_fmt [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/macros.rs:130:9 [INFO] [stderr] | [INFO] [stderr] 130 | write!(&mut v, "s = {:?}", s); // uses io::Write::write_fmt [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/macros.rs:156:9 [INFO] [stderr] | [INFO] [stderr] 156 | main(); [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/learn/macros.rs:166:9 [INFO] [stderr] | [INFO] [stderr] 166 | main2(); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: variable `Work` should have a snake case name [INFO] [stderr] --> src/test/custom_types.rs:149:13 [INFO] [stderr] | [INFO] [stderr] 149 | Work => println!("soldiers fight"), [INFO] [stderr] | ^^^^ help: convert the identifier to snake case (notice the capitalization): `work` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 54 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.21s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/hello_rust-4e9da5662d06d2f5 [INFO] [stdout] [INFO] [stdout] running 226 tests [INFO] [stdout] test learn::fs::fs::dir_entry::file_name ... ok [INFO] [stdout] test learn::fs::fs::dir_entry::file_type ... ok [INFO] [stdout] test learn::fs::fs::dir_entry::metadata ... ok [INFO] [stdout] test learn::fs::fs::dir_entry::path ... ok [INFO] [stdout] test learn::fs::fs::create ... FAILED [INFO] [stdout] test learn::fs::fs::copy ... FAILED [INFO] [stdout] test learn::fs::fs::filetype::is_dir ... FAILED [INFO] [stdout] test learn::fs::fs::file ... FAILED [INFO] [stdout] test learn::fs::fs::filetype::is_file ... FAILED [INFO] [stdout] test learn::fs::fs::create_dir ... FAILED [INFO] [stdout] test learn::fs::fs::filetype::is_symlink ... FAILED [INFO] [stdout] test learn::fs::fs::hard_link ... FAILED [INFO] [stdout] test learn::fs::fs::metadata2 ... FAILED [INFO] [stdout] test learn::fs::fs::metadata ... FAILED [INFO] [stdout] test learn::fs::fs::metadata::created ... FAILED [INFO] [stdout] test learn::fs::fs::metadata::is_file ... FAILED [INFO] [stdout] test learn::fs::fs::metadata::file_type ... FAILED [INFO] [stdout] test learn::fs::fs::metadata::is_dir ... FAILED [INFO] [stdout] test learn::fs::fs::metadata::len ... FAILED [INFO] [stdout] test learn::fs::fs::open_options::append ... ok [INFO] [stdout] test learn::fs::fs::open_options::read ... ok [INFO] [stdout] test learn::fs::fs::open_options::new ... ok [INFO] [stdout] test learn::fs::fs::open_options::create_new ... ok [INFO] [stdout] test learn::fs::fs::open_options::write ... ok [INFO] [stdout] test learn::fs::fs::open_options::truncate ... ok [INFO] [stdout] test learn::fs::fs::metadata::metadata ... FAILED [INFO] [stdout] test learn::fs::fs::open ... FAILED [INFO] [stdout] test learn::fs::fs::metadata::modified ... FAILED [INFO] [stdout] test learn::fs::fs::open_options::create ... ok [INFO] [stdout] test learn::fs::fs::permissions::readonly ... FAILED [INFO] [stdout] test learn::fs::fs::permissions::set_readonly ... FAILED [INFO] [stdout] test learn::fs::fs::read_to_string ... FAILED [INFO] [stdout] test learn::fs::fs::remove_file ... FAILED [INFO] [stdout] test learn::fs::fs::remove_dir_all ... FAILED [INFO] [stdout] test learn::fs::fs::set_permissions ... FAILED [INFO] [stdout] test learn::fs::fs::write ... FAILED [INFO] [stdout] test learn::fs::fs::try_clone ... FAILED [INFO] [stdout] test learn::fs::fs::write_all ... FAILED [INFO] [stdout] test learn::fs::fs::rename ... FAILED [INFO] [stdout] test learn::io::io::empty ... ok [INFO] [stdout] test learn::fs::fs::symlink_metadata ... FAILED [INFO] [stdout] test learn::fs::fs::metadata::permissions ... FAILED [INFO] [stdout] test learn::io::io::sink ... ok [INFO] [stdout] test learn::macros::macros::assert ... ok [INFO] [stdout] test learn::io::io::repeat ... ok [INFO] [stdout] test learn::fs::fs::sync_data ... FAILED [INFO] [stdout] test learn::fs::fs::sync_all ... FAILED [INFO] [stdout] test learn::macros::macros::assert_eq ... ok [INFO] [stdout] test learn::macros::macros::assert_ne ... ok [INFO] [stdout] test learn::macros::macros::current_line ... ok [INFO] [stdout] test learn::macros::macros::dbg ... ok [INFO] [stdout] test learn::macros::macros::debug_assert ... ok [INFO] [stdout] test learn::macros::macros::debug_assert_eq ... ok [INFO] [stdout] test learn::macros::macros::column ... ok [INFO] [stdout] test learn::macros::macros::concat ... ok [INFO] [stdout] test learn::fs::fs::remove_dir ... FAILED [INFO] [stdout] test learn::macros::macros::env ... ok [INFO] [stdout] test learn::macros::macros::eprint ... ok [INFO] [stdout] test learn::macros::macros::format_args ... ok [INFO] [stdout] test learn::macros::macros::option_env ... FAILED [INFO] [stdout] test learn::macros::macros::println ... ok [INFO] [stdout] test learn::macros::macros::stringify ... ok [INFO] [stdout] test learn::macros::macros::unreachable ... ok [INFO] [stdout] test learn::macros::macros::eprintln ... ok [INFO] [stdout] test learn::macros::macros::write ... ok [INFO] [stdout] test learn::macros::macros::file ... ok [INFO] [stdout] test learn::macros::macros::writeln ... ok [INFO] [stdout] test learn::net2::net::string ... ok [INFO] [stdout] test learn::macros::macros::print ... ok [INFO] [stdout] test learn::io::io::copy ... ok [INFO] [stdout] test learn::test::tests::it_works ... ok [INFO] [stdout] test learn::test::tests::larger_can_hold_smaller ... ok [INFO] [stdout] test learn::test::tests::test_test ... ok [INFO] [stdout] test learn::net2::net::client2 ... FAILED [INFO] [stdout] test learn::time::time::checked_add ... ok [INFO] [stdout] test learn::macros::macros::panic ... FAILED [INFO] [stdout] test learn::time::time::checked_sub ... ok [INFO] [stdout] test learn::test::tests::it_works2 ... FAILED [INFO] [stdout] test learn::time::time::add ... ok [INFO] [stdout] test learn::time::time::second ... ok [INFO] [stdout] test learn::test::tests::larger_can_hold_smaller2 ... FAILED [INFO] [stdout] test learn::time::time::instant_monotonic ... ok [INFO] [stdout] test learn::types_test::types_test::cast ... ok [INFO] [stdout] test lib::box_test::box_test::clone ... ok [INFO] [stdout] test lib::box_test::box_test::default ... ok [INFO] [stdout] test lib::box_test::box_test::from ... ok [INFO] [stdout] test lib::box_test::box_test::new ... ok [INFO] [stdout] test lib::char::char_test::common ... ok [INFO] [stdout] test lib::char::char_test::escape_unicode ... ok [INFO] [stdout] test lib::char::char_test::form_digit ... ok [INFO] [stdout] test lib::char::char_test::from ... ok [INFO] [stdout] test lib::char::char_test::from_u32 ... ok [INFO] [stdout] test lib::char::char_test::is_digit ... ok [INFO] [stdout] test lib::char::char_test::len_utf8 ... ok [INFO] [stdout] test lib::char::char_test::to_digit ... ok [INFO] [stdout] test learn::time::time::duration_since ... ok [INFO] [stdout] test lib::chrono::chrono::local::today ... ok [INFO] [stdout] test lib::chrono::chrono::test1 ... ok [INFO] [stdout] test lib::env::env::current_dir ... ok [INFO] [stdout] test lib::env::env::set_current_dir ... ok [INFO] [stdout] test learn::time::time::system_time_error ... ok [INFO] [stdout] test lib::env::env::var ... ok [INFO] [stdout] test lib::rand::rand::fill_bytes ... ok [INFO] [stdout] test lib::env::env::vars ... ok [INFO] [stdout] test lib::rand::rand::gen ... ok [INFO] [stdout] test lib::chrono::chrono::local::now ... ok [INFO] [stdout] test lib::rand::rand::gen_ascii_chars ... ok [INFO] [stdout] test lib::rand::rand::gen_weighted_bool ... ok [INFO] [stdout] test lib::rand::rand::gen_range ... ok [INFO] [stdout] test lib::rand::rand::thread_rng ... ok [INFO] [stdout] test lib::rand::rand::gen_iter ... ok [INFO] [stdout] test lib::rand::rand::random ... ok [INFO] [stdout] test lib::slice::slice::first_mut ... ok [INFO] [stdout] test lib::slice::slice::iter ... ok [INFO] [stdout] test lib::slice::slice::iter_mut ... ok [INFO] [stdout] test lib::slice::slice::common ... ok [INFO] [stdout] test lib::slice::slice::is_empty ... ok [INFO] [stdout] test lib::slice::slice::len ... ok [INFO] [stdout] test lib::slice::slice::reverse ... ok [INFO] [stdout] test lib::slice::slice::split_first ... ok [INFO] [stdout] test lib::slice::slice::split_first_mut ... ok [INFO] [stdout] test lib::string::string::as_str ... ok [INFO] [stdout] test lib::string::string::as_mut_str ... ok [INFO] [stdout] test lib::slice::slice::split_last ... ok [INFO] [stdout] test lib::string::string::from_utf8_lossy ... ok [INFO] [stdout] test lib::string::string::into_bytes ... ok [INFO] [stdout] test lib::string::string::from_utf8 ... ok [INFO] [stdout] test lib::string::string::new ... ok [INFO] [stdout] test lib::string::string::push_str ... ok [INFO] [stdout] test lib::string::string::remove ... ok [INFO] [stdout] test lib::string::string::pop ... ok [INFO] [stdout] test lib::string::string::reserve_exact ... ok [INFO] [stdout] test lib::string::string::reserve ... ok [INFO] [stdout] test lib::string::string::shrink_to_fit ... ok [INFO] [stdout] test lib::string::string::truncate ... ok [INFO] [stdout] test lib::string::string::with_capacity ... ok [INFO] [stdout] test lib::string::string::retain ... ok [INFO] [stdout] test lib::time::time::duration::checked_div ... ok [INFO] [stdout] test lib::time::time::duration::checked_mul ... ok [INFO] [stdout] test lib::time::time::duration::checked_add ... ok [INFO] [stdout] test lib::time::time::duration::constant ... ok [INFO] [stdout] test lib::time::time::duration::checked_sub ... ok [INFO] [stdout] test lib::time::time::duration::from_micros ... ok [INFO] [stdout] test lib::time::time::duration::from_millis ... ok [INFO] [stdout] test lib::time::time::duration::from_nanos ... ok [INFO] [stdout] test lib::time::time::duration::from_secs ... ok [INFO] [stdout] test lib::time::time::duration::new ... ok [INFO] [stdout] test lib::time::time::duration::subsec_millis ... ok [INFO] [stdout] test lib::time::time::duration::subsec_micros ... ok [INFO] [stdout] test lib::time::time::duration::subsec_nanos ... ok [INFO] [stdout] test lib::time::time::instant::nwo ... ok [INFO] [stdout] test lib::vec::vec::append ... ok [INFO] [stdout] test lib::vec::vec::as_mut_slice ... ok [INFO] [stdout] test lib::vec::vec::as_slice ... ok [INFO] [stdout] test lib::vec::vec::drain ... ok [INFO] [stdout] test lib::vec::vec::extend_from_slice ... ok [INFO] [stdout] test lib::vec::vec::new ... ok [INFO] [stdout] test lib::vec::vec::pop ... ok [INFO] [stdout] test lib::vec::vec::push ... ok [INFO] [stdout] test lib::vec::vec::reserve ... ok [INFO] [stdout] test lib::vec::vec::reserve_exact ... ok [INFO] [stdout] test lib::vec::vec::resize ... ok [INFO] [stdout] test lib::vec::vec::split_off ... ok [INFO] [stdout] test lib::vec::vec::with_capacity ... ok [INFO] [stdout] test test::conversion::conversion::from ... ok [INFO] [stdout] test test::conversion::conversion::into ... ok [INFO] [stdout] test test::conversion::conversion::string ... ok [INFO] [stdout] test test::conversion::conversion::try_test ... ok [INFO] [stdout] test test::custom_types::alias ... ok [INFO] [stdout] test test::custom_types::c_like ... ok [INFO] [stdout] test test::custom_types::constants ... ok [INFO] [stdout] test test::custom_types::enum_test ... ok [INFO] [stdout] test test::custom_types::linked_list ... ok [INFO] [stdout] test test::custom_types::struct_test ... ok [INFO] [stdout] test test::custom_types::use_test ... ok [INFO] [stdout] test test::flow_control::for_test::iterators ... ok [INFO] [stdout] test test::flow_control::for_test::range ... ok [INFO] [stdout] test test::flow_control::if_else::common ... ok [INFO] [stdout] test test::flow_control::if_else::test ... ok [INFO] [stdout] test learn::time::time::system_time ... ok [INFO] [stdout] test test::flow_control::loop_test::nested ... ok [INFO] [stdout] test learn::time::time::instant ... ok [INFO] [stdout] test test::flow_control::loop_test::return_test ... ok [INFO] [stdout] test test::flow_control::match_test::common ... ok [INFO] [stdout] test test::flow_control::match_test::binding ... ok [INFO] [stdout] test test::flow_control::match_test::if_let ... ok [INFO] [stdout] test test::flow_control::match_test::while_let ... ok [INFO] [stdout] test test::flow_control::while_test ... ok [INFO] [stdout] test test::flow_control::match_test::tuples ... ok [INFO] [stdout] test test::hello_world::display ... ok [INFO] [stdout] test test::hello_world::debug ... ok [INFO] [stdout] test test::hello_world::format ... ok [INFO] [stdout] test test::hello_world::hello_world ... ok [INFO] [stdout] test test::hello_world::list ... ok [INFO] [stdout] test test::hello_world::print ... ok [INFO] [stdout] test test::match_test::enums ... ok [INFO] [stdout] test test::hello_world::println ... ok [INFO] [stdout] test test::match_test::pointers ... ok [INFO] [stdout] test test::match_test::guard ... ok [INFO] [stdout] test test::match_test::struct_test ... ok [INFO] [stdout] test test::match_test::tuples ... ok [INFO] [stdout] test test::primitives::array ... ok [INFO] [stdout] test test::primitives::primitives ... ok [INFO] [stdout] test test::primitives::print ... ok [INFO] [stdout] test test::primitives::tuples ... ok [INFO] [stdout] test test::scope::borrow ... ok [INFO] [stdout] test test::scope::borrow_alias ... ok [INFO] [stdout] test test::scope::borrow_mut ... ok [INFO] [stdout] test test::scope::move_mut ... ok [INFO] [stdout] test test::scope::borrow_ref ... ok [INFO] [stdout] test test::scope::raii ... ok [INFO] [stdout] test test::scope::move_test ... ok [INFO] [stdout] test test::types::alias ... ok [INFO] [stdout] test test::types::cast ... ok [INFO] [stdout] test test::types::inference ... ok [INFO] [stdout] test test::types::literals ... ok [INFO] [stdout] test test::variable_bindings::declare ... ok [INFO] [stdout] test test::variable_bindings::mutability ... ok [INFO] [stdout] test test::variable_bindings::scope ... ok [INFO] [stdout] test test::variable_bindings::freeze ... ok [INFO] [stdout] test lib::time::time::duration::as_secs ... ok [INFO] [stdout] test lib::time::time::instant::duration_since ... ok [INFO] [stdout] test learn::time::time::elapsed ... ok [INFO] [stdout] test learn::net2::net::client ... test learn::net2::net::client has been running for over 60 seconds [INFO] [stdout] test learn::net2::net::server ... test learn::net2::net::server has been running for over 60 seconds [INFO] [stdout] test test::flow_control::loop_test::common ... test test::flow_control::loop_test::common has been running for over 60 seconds [ERROR] error running command: no output for 300 seconds [INFO] running `"docker" "inspect" "debed4067c6a236d49f079b561ee55fc7cb69d7e1214a8f73ed52c174ed39464"` [INFO] running `"docker" "rm" "-f" "debed4067c6a236d49f079b561ee55fc7cb69d7e1214a8f73ed52c174ed39464"` [INFO] [stdout] debed4067c6a236d49f079b561ee55fc7cb69d7e1214a8f73ed52c174ed39464