[INFO] updating cached repository quirinux/rust-core-utils [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/quirinux/rust-core-utils [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/quirinux/rust-core-utils" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/quirinux/rust-core-utils"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/quirinux/rust-core-utils'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/quirinux/rust-core-utils" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/quirinux/rust-core-utils"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/quirinux/rust-core-utils'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 92441ff9a19233642d3e5d599ddd7604c9674beb [INFO] sha for GitHub repo quirinux/rust-core-utils: 92441ff9a19233642d3e5d599ddd7604c9674beb [INFO] validating manifest of quirinux/rust-core-utils on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of quirinux/rust-core-utils on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing quirinux/rust-core-utils [INFO] finished frobbing quirinux/rust-core-utils [INFO] frobbed toml for quirinux/rust-core-utils written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/quirinux/rust-core-utils/Cargo.toml [INFO] started frobbing quirinux/rust-core-utils [INFO] finished frobbing quirinux/rust-core-utils [INFO] frobbed toml for quirinux/rust-core-utils written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/quirinux/rust-core-utils/Cargo.toml [INFO] crate quirinux/rust-core-utils already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking quirinux/rust-core-utils against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/quirinux/rust-core-utils:/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=forbid" "-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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 8b8391a25408f98844baec7e214357510f74c9f8eee044d14fc344be30dda795 [INFO] running `"docker" "start" "-a" "8b8391a25408f98844baec7e214357510f74c9f8eee044d14fc344be30dda795"` [INFO] [stderr] Compiling syn v0.15.36 [INFO] [stderr] Checking regex v1.1.7 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Compiling structopt-derive v0.2.16 [INFO] [stderr] Checking structopt v0.2.16 [INFO] [stderr] Checking rust-core-utils v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/bin/util/file.rs:17:18 [INFO] [stderr] | [INFO] [stderr] 17 | bufread: Box, [INFO] [stderr] | ^^^^^^^ help: use `dyn`: `dyn BufRead` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/bin/util/file.rs:17:18 [INFO] [stderr] | [INFO] [stderr] 17 | bufread: Box, [INFO] [stderr] | ^^^^^^^ help: use `dyn`: `dyn BufRead` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/bin/util/file.rs:17:18 [INFO] [stderr] | [INFO] [stderr] 17 | bufread: Box, [INFO] [stderr] | ^^^^^^^ help: use `dyn`: `dyn BufRead` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/bin/util/file.rs:17:18 [INFO] [stderr] | [INFO] [stderr] 17 | bufread: Box, [INFO] [stderr] | ^^^^^^^ help: use `dyn`: `dyn BufRead` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `walk_buffer_bytes` [INFO] [stderr] --> src/bin/util/file.rs:95:5 [INFO] [stderr] | [INFO] [stderr] 95 | pub fn walk_buffer_bytes(&mut self, bytes: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `walk_buffer_lines` [INFO] [stderr] --> src/bin/util/file.rs:102:5 [INFO] [stderr] | [INFO] [stderr] 102 | pub fn walk_buffer_lines(&mut self, lines: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `last_bytes` [INFO] [stderr] --> src/bin/util/file.rs:108:5 [INFO] [stderr] | [INFO] [stderr] 108 | pub fn last_bytes(&mut self, bytes: usize) -> (usize, Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `last_lines` [INFO] [stderr] --> src/bin/util/file.rs:128:5 [INFO] [stderr] | [INFO] [stderr] 128 | pub fn last_lines(&mut self, lines: usize) -> (usize, Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `path` [INFO] [stderr] --> src/bin/util/file.rs:146:5 [INFO] [stderr] | [INFO] [stderr] 146 | pub fn path(&self) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `len` [INFO] [stderr] --> src/bin/util/file.rs:150:5 [INFO] [stderr] | [INFO] [stderr] 150 | pub fn len(&self) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/head.rs:55:9 [INFO] [stderr] | [INFO] [stderr] 55 | writter.write_all(&b.unwrap()); [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 variable: `valid_line` [INFO] [stderr] --> src/bin/cat.rs:137:21 [INFO] [stderr] | [INFO] [stderr] 137 | let mut valid_line = false; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_valid_line` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `blank_line_count` [INFO] [stderr] --> src/bin/cat.rs:143:30 [INFO] [stderr] | [INFO] [stderr] 143 | let (valid_line, blank_line_count) = valid(line.clone(), blank_line_count, opt.squeeze_blank); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_blank_line_count` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/cat.rs:137:17 [INFO] [stderr] | [INFO] [stderr] 137 | let mut valid_line = false; [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: unused variable: `valid_line` [INFO] [stderr] --> src/bin/cat.rs:137:21 [INFO] [stderr] | [INFO] [stderr] 137 | let mut valid_line = false; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_valid_line` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `blank_line_count` [INFO] [stderr] --> src/bin/cat.rs:143:30 [INFO] [stderr] | [INFO] [stderr] 143 | let (valid_line, blank_line_count) = valid(line.clone(), blank_line_count, opt.squeeze_blank); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_blank_line_count` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `walk_buffer_bytes` [INFO] [stderr] --> src/bin/util/file.rs:95:5 [INFO] [stderr] | [INFO] [stderr] 95 | pub fn walk_buffer_bytes(&mut self, bytes: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `walk_buffer_lines` [INFO] [stderr] --> src/bin/util/file.rs:102:5 [INFO] [stderr] | [INFO] [stderr] 102 | pub fn walk_buffer_lines(&mut self, lines: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `last_bytes` [INFO] [stderr] --> src/bin/util/file.rs:108:5 [INFO] [stderr] | [INFO] [stderr] 108 | pub fn last_bytes(&mut self, bytes: usize) -> (usize, Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `last_lines` [INFO] [stderr] --> src/bin/util/file.rs:128:5 [INFO] [stderr] | [INFO] [stderr] 128 | pub fn last_lines(&mut self, lines: usize) -> (usize, Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `path` [INFO] [stderr] --> src/bin/util/file.rs:146:5 [INFO] [stderr] | [INFO] [stderr] 146 | pub fn path(&self) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `len` [INFO] [stderr] --> src/bin/util/file.rs:150:5 [INFO] [stderr] | [INFO] [stderr] 150 | pub fn len(&self) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/cat.rs:153:13 [INFO] [stderr] | [INFO] [stderr] 153 | / match f.read_chunk(size) { [INFO] [stderr] 154 | | Some(b) => writter.write_all(&b), [INFO] [stderr] 155 | | _ => Ok(()), [INFO] [stderr] 156 | | }; [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: variable does not need to be mutable [INFO] [stderr] --> src/bin/cat.rs:137:17 [INFO] [stderr] | [INFO] [stderr] 137 | let mut valid_line = false; [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] warning: method is never used: `walk_buffer_bytes` [INFO] [stderr] --> src/bin/util/file.rs:95:5 [INFO] [stderr] | [INFO] [stderr] 95 | pub fn walk_buffer_bytes(&mut self, bytes: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `walk_buffer_lines` [INFO] [stderr] --> src/bin/util/file.rs:102:5 [INFO] [stderr] | [INFO] [stderr] 102 | pub fn walk_buffer_lines(&mut self, lines: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `last_bytes` [INFO] [stderr] --> src/bin/util/file.rs:108:5 [INFO] [stderr] | [INFO] [stderr] 108 | pub fn last_bytes(&mut self, bytes: usize) -> (usize, Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `last_lines` [INFO] [stderr] --> src/bin/util/file.rs:128:5 [INFO] [stderr] | [INFO] [stderr] 128 | pub fn last_lines(&mut self, lines: usize) -> (usize, Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `path` [INFO] [stderr] --> src/bin/util/file.rs:146:5 [INFO] [stderr] | [INFO] [stderr] 146 | pub fn path(&self) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `len` [INFO] [stderr] --> src/bin/util/file.rs:150:5 [INFO] [stderr] | [INFO] [stderr] 150 | pub fn len(&self) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/head.rs:55:9 [INFO] [stderr] | [INFO] [stderr] 55 | writter.write_all(&b.unwrap()); [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: method is never used: `walk_buffer_bytes` [INFO] [stderr] --> src/bin/util/file.rs:95:5 [INFO] [stderr] | [INFO] [stderr] 95 | pub fn walk_buffer_bytes(&mut self, bytes: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `walk_buffer_lines` [INFO] [stderr] --> src/bin/util/file.rs:102:5 [INFO] [stderr] | [INFO] [stderr] 102 | pub fn walk_buffer_lines(&mut self, lines: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `last_bytes` [INFO] [stderr] --> src/bin/util/file.rs:108:5 [INFO] [stderr] | [INFO] [stderr] 108 | pub fn last_bytes(&mut self, bytes: usize) -> (usize, Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `last_lines` [INFO] [stderr] --> src/bin/util/file.rs:128:5 [INFO] [stderr] | [INFO] [stderr] 128 | pub fn last_lines(&mut self, lines: usize) -> (usize, Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `path` [INFO] [stderr] --> src/bin/util/file.rs:146:5 [INFO] [stderr] | [INFO] [stderr] 146 | pub fn path(&self) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `len` [INFO] [stderr] --> src/bin/util/file.rs:150:5 [INFO] [stderr] | [INFO] [stderr] 150 | pub fn len(&self) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/cat.rs:153:13 [INFO] [stderr] | [INFO] [stderr] 153 | / match f.read_chunk(size) { [INFO] [stderr] 154 | | Some(b) => writter.write_all(&b), [INFO] [stderr] 155 | | _ => Ok(()), [INFO] [stderr] 156 | | }; [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 22.01s [INFO] running `"docker" "inspect" "8b8391a25408f98844baec7e214357510f74c9f8eee044d14fc344be30dda795"` [INFO] running `"docker" "rm" "-f" "8b8391a25408f98844baec7e214357510f74c9f8eee044d14fc344be30dda795"` [INFO] [stdout] 8b8391a25408f98844baec7e214357510f74c9f8eee044d14fc344be30dda795