[INFO] cloning repository https://github.com/lmmqxyx404/png_info [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lmmqxyx404/png_info" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flmmqxyx404%2Fpng_info", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flmmqxyx404%2Fpng_info'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a8146409378f3a9ee33db3b73bac64f6ce42c7ea [INFO] checking lmmqxyx404/png_info against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flmmqxyx404%2Fpng_info" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/lmmqxyx404/png_info [INFO] finished tweaking git repo https://github.com/lmmqxyx404/png_info [INFO] tweaked toml for git repo https://github.com/lmmqxyx404/png_info written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/lmmqxyx404/png_info on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/lmmqxyx404/png_info already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 81891ab9448f314b516781356904be381973e7ffc2b501a6f06971851d2ba7b0 [INFO] running `Command { std: "docker" "start" "-a" "81891ab9448f314b516781356904be381973e7ffc2b501a6f06971851d2ba7b0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "81891ab9448f314b516781356904be381973e7ffc2b501a6f06971851d2ba7b0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "81891ab9448f314b516781356904be381973e7ffc2b501a6f06971851d2ba7b0", kill_on_drop: false }` [INFO] [stdout] 81891ab9448f314b516781356904be381973e7ffc2b501a6f06971851d2ba7b0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0a6901e05fefcf31707a1d1d734196b87ab77da681eedad95202cdfd0f91b1a3 [INFO] running `Command { std: "docker" "start" "-a" "0a6901e05fefcf31707a1d1d734196b87ab77da681eedad95202cdfd0f91b1a3", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.99 [INFO] [stderr] Compiling unicode-segmentation v1.9.0 [INFO] [stderr] Checking crc-catalog v2.1.0 [INFO] [stderr] Compiling libc v0.2.132 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking crc v3.0.0 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling structopt-derive v0.4.18 [INFO] [stderr] Checking structopt v0.3.26 [INFO] [stderr] Checking png_info v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Algorithm` [INFO] [stdout] --> src/chunk/mod.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use crc::{Algorithm, Crc, CRC_32_ISO_HDLC}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/chunk/mod.rs:6:18 [INFO] [stdout] | [INFO] [stdout] 6 | chunk_type::{self, ChunkType}, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `invalidByte` should have an upper camel case name [INFO] [stdout] --> src/chunk_type/mod.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | invalidByte(u8), [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `InvalidByte` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `ChunkType` and `self` [INFO] [stdout] --> src/png/mod.rs:2:25 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::chunk_type::{self, ChunkType}; [INFO] [stdout] | ^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Display` [INFO] [stdout] --> src/png/mod.rs:5:22 [INFO] [stdout] | [INFO] [stdout] 5 | use std::fmt::{self, Display}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Algorithm` [INFO] [stdout] --> src/chunk/mod.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use crc::{Algorithm, Crc, CRC_32_ISO_HDLC}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/chunk/mod.rs:6:18 [INFO] [stdout] | [INFO] [stdout] 6 | chunk_type::{self, ChunkType}, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `invalidByte` should have an upper camel case name [INFO] [stdout] --> src/chunk_type/mod.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | invalidByte(u8), [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `InvalidByte` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `ChunkType` and `self` [INFO] [stdout] --> src/png/mod.rs:2:25 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::chunk_type::{self, ChunkType}; [INFO] [stdout] | ^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Display` [INFO] [stdout] --> src/png/mod.rs:5:22 [INFO] [stdout] | [INFO] [stdout] 5 | use std::fmt::{self, Display}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/commands/mod.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let mut png_item = take_png(&input).unwrap(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/commands/mod.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let mut png_item = take_png(&input).unwrap(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `length` and `data` are never used [INFO] [stdout] --> src/chunk/mod.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 20 | impl Chunk { [INFO] [stdout] | ---------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 33 | fn length(&self) -> usize { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 37 | fn data(&self) -> &[u8] { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `is_critical`, `is_public`, `is_reserved_bit_valid`, `is_safe_to_copy`, and `is_valid` are never used [INFO] [stdout] --> src/chunk_type/mod.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 28 | impl ChunkType { [INFO] [stdout] | -------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 33 | fn is_critical(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 36 | fn is_public(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 40 | fn is_reserved_bit_valid(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 43 | fn is_safe_to_copy(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 46 | fn is_valid(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> src/args/mod.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | pub message: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> src/args/mod.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | pub chunk_type: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> src/args/mod.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | pub chunk_type: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> src/args/mod.rs:40:5 [INFO] [stdout] | [INFO] [stdout] 40 | pub chunk_type: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `CASTAGNOLI` should have a snake case name [INFO] [stdout] --> src/chunk/mod.rs:23:13 [INFO] [stdout] | [INFO] [stdout] 23 | let CASTAGNOLI: Crc = Crc::::new(&CRC_32_ISO_HDLC); [INFO] [stdout] | ^^^^^^^^^^ help: convert the identifier to snake case: `castagnoli` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `CASTAGNOLI` should have a snake case name [INFO] [stdout] --> src/chunk/mod.rs:77:13 [INFO] [stdout] | [INFO] [stdout] 77 | let CASTAGNOLI: Crc = Crc::::new(&CRC_32_ISO_HDLC); [INFO] [stdout] | ^^^^^^^^^^ help: convert the identifier to snake case: `castagnoli` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/chunk/mod.rs:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | writeln!(f, "type :{}", self.chunk_type()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 96 | let _ = writeln!(f, "type :{}", self.chunk_type()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/chunk/mod.rs:97:9 [INFO] [stdout] | [INFO] [stdout] 97 | writeln!(f, "data size :{}", self.chunk_data.len()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 97 | let _ = writeln!(f, "data size :{}", self.chunk_data.len()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/chunk/mod.rs:98:9 [INFO] [stdout] | [INFO] [stdout] 98 | writeln!(f, "crc :{}", self.crc()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 98 | let _ = writeln!(f, "crc :{}", self.crc()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/commands/mod.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | file_buffer.read_to_end(&mut buffer); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 18 | let _ = file_buffer.read_to_end(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/commands/mod.rs:54:5 [INFO] [stdout] | [INFO] [stdout] 54 | png_item.remove_chunk(&args.chunk_type); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 54 | let _ = png_item.remove_chunk(&args.chunk_type); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::str::FromStr` [INFO] [stdout] --> src/png/mod.rs:85:9 [INFO] [stdout] | [INFO] [stdout] 85 | use std::str::FromStr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `png_info` (lib) due to 4 previous errors; 16 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/commands/mod.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let mut png_item = take_png(&input).unwrap(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/commands/mod.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let mut png_item = take_png(&input).unwrap(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `data` is never used [INFO] [stdout] --> src/chunk/mod.rs:37:8 [INFO] [stdout] | [INFO] [stdout] 20 | impl Chunk { [INFO] [stdout] | ---------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 37 | fn data(&self) -> &[u8] { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> src/args/mod.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | pub message: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> src/args/mod.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | pub chunk_type: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> src/args/mod.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | pub chunk_type: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> src/args/mod.rs:40:5 [INFO] [stdout] | [INFO] [stdout] 40 | pub chunk_type: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `CASTAGNOLI` should have a snake case name [INFO] [stdout] --> src/chunk/mod.rs:23:13 [INFO] [stdout] | [INFO] [stdout] 23 | let CASTAGNOLI: Crc = Crc::::new(&CRC_32_ISO_HDLC); [INFO] [stdout] | ^^^^^^^^^^ help: convert the identifier to snake case: `castagnoli` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `CASTAGNOLI` should have a snake case name [INFO] [stdout] --> src/chunk/mod.rs:77:13 [INFO] [stdout] | [INFO] [stdout] 77 | let CASTAGNOLI: Crc = Crc::::new(&CRC_32_ISO_HDLC); [INFO] [stdout] | ^^^^^^^^^^ help: convert the identifier to snake case: `castagnoli` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/chunk/mod.rs:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | writeln!(f, "type :{}", self.chunk_type()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 96 | let _ = writeln!(f, "type :{}", self.chunk_type()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/chunk/mod.rs:97:9 [INFO] [stdout] | [INFO] [stdout] 97 | writeln!(f, "data size :{}", self.chunk_data.len()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 97 | let _ = writeln!(f, "data size :{}", self.chunk_data.len()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/chunk/mod.rs:98:9 [INFO] [stdout] | [INFO] [stdout] 98 | writeln!(f, "crc :{}", self.crc()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 98 | let _ = writeln!(f, "crc :{}", self.crc()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/commands/mod.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | file_buffer.read_to_end(&mut buffer); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 18 | let _ = file_buffer.read_to_end(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/commands/mod.rs:54:5 [INFO] [stdout] | [INFO] [stdout] 54 | png_item.remove_chunk(&args.chunk_type); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 54 | let _ = png_item.remove_chunk(&args.chunk_type); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `png_info` (lib test) due to 4 previous errors; 16 warnings emitted [INFO] running `Command { std: "docker" "inspect" "0a6901e05fefcf31707a1d1d734196b87ab77da681eedad95202cdfd0f91b1a3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0a6901e05fefcf31707a1d1d734196b87ab77da681eedad95202cdfd0f91b1a3", kill_on_drop: false }` [INFO] [stdout] 0a6901e05fefcf31707a1d1d734196b87ab77da681eedad95202cdfd0f91b1a3