[INFO] updating cached repository https://github.com/cab/mdv [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] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 253c2c0ac03a2eb35a5f7bc8e0345993d81a587c [INFO] checking cab/mdv against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcab%2Fmdv" "/workspace/builds/worker-2/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cab/mdv on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c [INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/cab/mdv [INFO] finished tweaking git repo https://github.com/cab/mdv [INFO] tweaked toml for git repo https://github.com/cab/mdv written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/cab/mdv already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 37bcf9eb14d7eac39130760ad603f49fc891542404198ab921a545e63d551c16 [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" "37bcf9eb14d7eac39130760ad603f49fc891542404198ab921a545e63d551c16"` [INFO] [stderr] Compiling cairo-rs v0.7.1 [INFO] [stderr] Checking float-cmp v0.5.3 [INFO] [stderr] Checking xmlparser v0.10.0 [INFO] [stderr] Compiling pulldown-cmark v0.6.1 [INFO] [stderr] Compiling cairo-sys-rs v0.9.2 [INFO] [stderr] Compiling servo-freetype-sys v4.0.5 [INFO] [stderr] Compiling harfbuzz-sys v0.3.3 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Checking simplecss v0.2.0 [INFO] [stderr] Checking svgtypes v0.5.0 [INFO] [stderr] Checking kurbo v0.2.3 [INFO] [stderr] Checking png v0.15.2 [INFO] [stderr] Checking roxmltree v0.7.3 [INFO] [stderr] Checking signal-hook v0.1.12 [INFO] [stderr] Checking native-tls v0.2.3 [INFO] [stderr] Compiling env_logger v0.6.2 [INFO] [stderr] Checking publicsuffix v1.5.4 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking crossterm v0.14.1 [INFO] [stderr] Compiling failure v0.1.6 [INFO] [stderr] Checking serde_urlencoded v0.5.5 [INFO] [stderr] Checking plist v0.4.2 [INFO] [stderr] Checking tokio-reactor v0.1.11 [INFO] [stderr] Checking freetype v0.4.1 [INFO] [stderr] Checking cookie_store v0.7.0 [INFO] [stderr] Checking tokio-threadpool v0.1.17 [INFO] [stderr] Compiling which v2.0.1 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Compiling bindgen v0.50.1 [INFO] [stderr] Checking harfbuzz_rs v1.0.0 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking usvg v0.8.0 [INFO] [stderr] Checking hyper v0.12.35 [INFO] [stderr] Checking resvg v0.8.0 [INFO] [stderr] Checking hyper-tls v0.3.2 [INFO] [stderr] Checking reqwest v0.9.24 [INFO] [stderr] Compiling onig_sys v69.2.0 [INFO] [stderr] Checking onig v5.0.0 [INFO] [stderr] Checking syntect v3.3.0 [INFO] [stderr] Checking mdv v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused imports: `ClearType`, `Clear`, `Color`, `ExecutableCommand`, `Print`, `ResetColor`, `SetBackgroundColor`, `SetForegroundColor`, `cursor::Hide` [INFO] [stderr] --> src/main.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | cursor::Hide, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] 3 | style::{Color, Print, ResetColor, SetBackgroundColor, SetForegroundColor}, [INFO] [stderr] | ^^^^^ ^^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 4 | terminal::{Clear, ClearType}, [INFO] [stderr] | ^^^^^ ^^^^^^^^^ [INFO] [stderr] 5 | ExecutableCommand, Result, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `html` [INFO] [stderr] --> src/main.rs:7:22 [INFO] [stderr] | [INFO] [stderr] 7 | use pulldown_cmark::{html, Options, Parser}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Write`, `stdout` [INFO] [stderr] --> src/main.rs:9:15 [INFO] [stderr] | [INFO] [stderr] 9 | use std::io::{stdout, Write}; [INFO] [stderr] | ^^^^^^ ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `ClearType`, `Clear`, `Print`, `Result`, `cursor::Hide` [INFO] [stderr] --> src/main.rs:32:9 [INFO] [stderr] | [INFO] [stderr] 32 | cursor::Hide, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] 33 | style::{ [INFO] [stderr] 34 | Attribute, Color, Print, ResetColor, SetAttribute, SetBackgroundColor, [INFO] [stderr] | ^^^^^ [INFO] [stderr] ... [INFO] [stderr] 37 | terminal::{Clear, ClearType}, [INFO] [stderr] | ^^^^^ ^^^^^^^^^ [INFO] [stderr] 38 | ExecutableCommand, Result, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::HashMap` [INFO] [stderr] --> src/main.rs:42:9 [INFO] [stderr] | [INFO] [stderr] 42 | use std::collections::HashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Arguments` [INFO] [stderr] --> src/main.rs:43:20 [INFO] [stderr] | [INFO] [stderr] 43 | use std::fmt::{Arguments, Write as FmtWrite}; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `ErrorKind` [INFO] [stderr] --> src/main.rs:44:25 [INFO] [stderr] | [INFO] [stderr] 44 | use std::io::{self, ErrorKind, Write}; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `as_24_bit_terminal_escaped` [INFO] [stderr] --> src/main.rs:170:49 [INFO] [stderr] | [INFO] [stderr] 170 | ... use syntect::util::{as_24_bit_terminal_escaped, LinesWithEndings}; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Write` [INFO] [stderr] --> src/main.rs:43:31 [INFO] [stderr] | [INFO] [stderr] 43 | use std::fmt::{Arguments, Write as FmtWrite}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:76:44 [INFO] [stderr] | [INFO] [stderr] 76 | reqwest::get(url).map_err(|e| io::Error::from(io::ErrorKind::Other))?; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:82:27 [INFO] [stderr] | [INFO] [stderr] 82 | .map_err(|e| io::Error::from(io::ErrorKind::Other))?; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:88:92 [INFO] [stderr] | [INFO] [stderr] 88 | let content_type = mime::Mime::from_str(content_type.to_str().map_err(|e| ())?) [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:89:35 [INFO] [stderr] | [INFO] [stderr] 89 | .map_err(|e| ())?; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:98:35 [INFO] [stderr] | [INFO] [stderr] 98 | .map_err(|e| io::Error::from(io::ErrorKind::Other))?; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `saved` [INFO] [stderr] --> src/main.rs:105:25 [INFO] [stderr] | [INFO] [stderr] 105 | let saved = img.save_png(&tmp.path()); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_saved` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ty` [INFO] [stderr] --> src/main.rs:152:35 [INFO] [stderr] | [INFO] [stderr] 152 | Tag::Link(ty, url, title) => {} [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_ty` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `url` [INFO] [stderr] --> src/main.rs:152:39 [INFO] [stderr] | [INFO] [stderr] 152 | Tag::Link(ty, url, title) => {} [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_url` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `title` [INFO] [stderr] --> src/main.rs:152:44 [INFO] [stderr] | [INFO] [stderr] 152 | Tag::Link(ty, url, title) => {} [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_title` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `level` [INFO] [stderr] --> src/main.rs:153:38 [INFO] [stderr] | [INFO] [stderr] 153 | Tag::Heading(level) => self.style(SetAttribute(Attribute::Bold))?, [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_level` [INFO] [stderr] [INFO] [stderr] warning: unused imports: `ClearType`, `Clear`, `Color`, `ExecutableCommand`, `Print`, `ResetColor`, `SetBackgroundColor`, `SetForegroundColor`, `cursor::Hide` [INFO] [stderr] --> src/main.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | cursor::Hide, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] 3 | style::{Color, Print, ResetColor, SetBackgroundColor, SetForegroundColor}, [INFO] [stderr] | ^^^^^ ^^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 4 | terminal::{Clear, ClearType}, [INFO] [stderr] | ^^^^^ ^^^^^^^^^ [INFO] [stderr] 5 | ExecutableCommand, Result, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `html` [INFO] [stderr] --> src/main.rs:7:22 [INFO] [stderr] | [INFO] [stderr] 7 | use pulldown_cmark::{html, Options, Parser}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ty` [INFO] [stderr] --> src/main.rs:154:36 [INFO] [stderr] | [INFO] [stderr] 154 | Tag::Image(ty, url, title) => { [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_ty` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `level` [INFO] [stderr] --> src/main.rs:227:38 [INFO] [stderr] | [INFO] [stderr] 227 | Tag::Heading(level) => self.write_str("\n")?, [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_level` [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Write`, `stdout` [INFO] [stderr] --> src/main.rs:9:15 [INFO] [stderr] | [INFO] [stderr] 9 | use std::io::{stdout, Write}; [INFO] [stderr] | ^^^^^^ ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `ClearType`, `Clear`, `Print`, `Result`, `cursor::Hide` [INFO] [stderr] --> src/main.rs:32:9 [INFO] [stderr] | [INFO] [stderr] 32 | cursor::Hide, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] 33 | style::{ [INFO] [stderr] 34 | Attribute, Color, Print, ResetColor, SetAttribute, SetBackgroundColor, [INFO] [stderr] | ^^^^^ [INFO] [stderr] ... [INFO] [stderr] 37 | terminal::{Clear, ClearType}, [INFO] [stderr] | ^^^^^ ^^^^^^^^^ [INFO] [stderr] 38 | ExecutableCommand, Result, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::HashMap` [INFO] [stderr] --> src/main.rs:42:9 [INFO] [stderr] | [INFO] [stderr] 42 | use std::collections::HashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Arguments` [INFO] [stderr] --> src/main.rs:43:20 [INFO] [stderr] | [INFO] [stderr] 43 | use std::fmt::{Arguments, Write as FmtWrite}; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `ErrorKind` [INFO] [stderr] --> src/main.rs:44:25 [INFO] [stderr] | [INFO] [stderr] 44 | use std::io::{self, ErrorKind, Write}; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `as_24_bit_terminal_escaped` [INFO] [stderr] --> src/main.rs:170:49 [INFO] [stderr] | [INFO] [stderr] 170 | ... use syntect::util::{as_24_bit_terminal_escaped, LinesWithEndings}; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:96:25 [INFO] [stderr] | [INFO] [stderr] 96 | let mut opt = resvg::Options::default(); [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `WriteWrapper` [INFO] [stderr] --> src/main.rs:243:12 [INFO] [stderr] | [INFO] [stderr] 243 | struct WriteWrapper(W); [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:117:13 [INFO] [stderr] | [INFO] [stderr] 117 | self.writer.execute(command); [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 import: `Write` [INFO] [stderr] --> src/main.rs:43:31 [INFO] [stderr] | [INFO] [stderr] 43 | use std::fmt::{Arguments, Write as FmtWrite}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:76:44 [INFO] [stderr] | [INFO] [stderr] 76 | reqwest::get(url).map_err(|e| io::Error::from(io::ErrorKind::Other))?; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:82:27 [INFO] [stderr] | [INFO] [stderr] 82 | .map_err(|e| io::Error::from(io::ErrorKind::Other))?; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:88:92 [INFO] [stderr] | [INFO] [stderr] 88 | let content_type = mime::Mime::from_str(content_type.to_str().map_err(|e| ())?) [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:89:35 [INFO] [stderr] | [INFO] [stderr] 89 | .map_err(|e| ())?; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:98:35 [INFO] [stderr] | [INFO] [stderr] 98 | .map_err(|e| io::Error::from(io::ErrorKind::Other))?; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `saved` [INFO] [stderr] --> src/main.rs:105:25 [INFO] [stderr] | [INFO] [stderr] 105 | let saved = img.save_png(&tmp.path()); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_saved` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ty` [INFO] [stderr] --> src/main.rs:152:35 [INFO] [stderr] | [INFO] [stderr] 152 | Tag::Link(ty, url, title) => {} [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_ty` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `url` [INFO] [stderr] --> src/main.rs:152:39 [INFO] [stderr] | [INFO] [stderr] 152 | Tag::Link(ty, url, title) => {} [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_url` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `title` [INFO] [stderr] --> src/main.rs:152:44 [INFO] [stderr] | [INFO] [stderr] 152 | Tag::Link(ty, url, title) => {} [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_title` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `level` [INFO] [stderr] --> src/main.rs:153:38 [INFO] [stderr] | [INFO] [stderr] 153 | Tag::Heading(level) => self.style(SetAttribute(Attribute::Bold))?, [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_level` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ty` [INFO] [stderr] --> src/main.rs:154:36 [INFO] [stderr] | [INFO] [stderr] 154 | Tag::Image(ty, url, title) => { [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_ty` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `level` [INFO] [stderr] --> src/main.rs:227:38 [INFO] [stderr] | [INFO] [stderr] 227 | Tag::Heading(level) => self.write_str("\n")?, [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_level` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:96:25 [INFO] [stderr] | [INFO] [stderr] 96 | let mut opt = resvg::Options::default(); [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `WriteWrapper` [INFO] [stderr] --> src/main.rs:243:12 [INFO] [stderr] | [INFO] [stderr] 243 | struct WriteWrapper(W); [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:117:13 [INFO] [stderr] | [INFO] [stderr] 117 | self.writer.execute(command); [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 1m 36s [INFO] running `"docker" "inspect" "37bcf9eb14d7eac39130760ad603f49fc891542404198ab921a545e63d551c16"` [INFO] running `"docker" "rm" "-f" "37bcf9eb14d7eac39130760ad603f49fc891542404198ab921a545e63d551c16"` [INFO] [stdout] 37bcf9eb14d7eac39130760ad603f49fc891542404198ab921a545e63d551c16