[INFO] cloning repository https://github.com/rodchenkov-sn/gazer [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rodchenkov-sn/gazer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodchenkov-sn%2Fgazer", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodchenkov-sn%2Fgazer'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a84c39ae0c49e93eaf5f6f5e65ede3b70637ee94 [INFO] testing rodchenkov-sn/gazer against beta-2022-04-10 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodchenkov-sn%2Fgazer" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rodchenkov-sn/gazer on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rodchenkov-sn/gazer [INFO] finished tweaking git repo https://github.com/rodchenkov-sn/gazer [INFO] tweaked toml for git repo https://github.com/rodchenkov-sn/gazer written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/rodchenkov-sn/gazer already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 1b875cfa35cf448d6b892502ffcd8bb50b444c4638d3ebc39a873b7e91062069 [INFO] running `Command { std: "docker" "start" "-a" "1b875cfa35cf448d6b892502ffcd8bb50b444c4638d3ebc39a873b7e91062069", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1b875cfa35cf448d6b892502ffcd8bb50b444c4638d3ebc39a873b7e91062069", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1b875cfa35cf448d6b892502ffcd8bb50b444c4638d3ebc39a873b7e91062069", kill_on_drop: false }` [INFO] [stdout] 1b875cfa35cf448d6b892502ffcd8bb50b444c4638d3ebc39a873b7e91062069 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 8e984c0654472ffad855b56d5e4561e564c8c25d22547d06abc39b1b5d5cd5df [INFO] running `Command { std: "docker" "start" "-a" "8e984c0654472ffad855b56d5e4561e564c8c25d22547d06abc39b1b5d5cd5df", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.70 [INFO] [stderr] Compiling textwrap v0.9.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling flate2 v1.0.14 [INFO] [stderr] Compiling clap v2.27.1 [INFO] [stderr] Compiling gazer v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `GzBuilder` [INFO] [stdout] --> src/main.rs:6:27 [INFO] [stdout] | [INFO] [stdout] 6 | use flate2::{Compression, GzBuilder}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/main.rs:11:15 [INFO] [stdout] | [INFO] [stdout] 11 | use std::io::{Read, Write, Seek, SeekFrom}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Write` [INFO] [stdout] --> src/main.rs:11:21 [INFO] [stdout] | [INFO] [stdout] 11 | use std::io::{Read, Write, Seek, SeekFrom}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `perm` [INFO] [stdout] --> src/main.rs:95:13 [INFO] [stdout] | [INFO] [stdout] 95 | let mut perm = output_file.metadata().unwrap().permissions(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_perm` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/gazer/tar_archive.rs:23:29 [INFO] [stdout] | [INFO] [stdout] 23 | if let Some(data) = archive.get_next_chunk() { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:41:14 [INFO] [stdout] | [INFO] [stdout] 41 | fn do_create(mut input: Option, mut output: Values, compress: bool, verbose: bool) -> Option<()> { [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:95:9 [INFO] [stdout] | [INFO] [stdout] 95 | let mut perm = output_file.metadata().unwrap().permissions(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | let mut traversed = File::open(archive.next()?).expect("bruh"); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `summarize` [INFO] [stdout] --> src/main.rs:127:4 [INFO] [stdout] | [INFO] [stdout] 127 | fn summarize(result: Option<()>) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:103:5 [INFO] [stdout] | [INFO] [stdout] 103 | output_file.seek(SeekFrom::End(0)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 22.56s [INFO] running `Command { std: "docker" "inspect" "8e984c0654472ffad855b56d5e4561e564c8c25d22547d06abc39b1b5d5cd5df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8e984c0654472ffad855b56d5e4561e564c8c25d22547d06abc39b1b5d5cd5df", kill_on_drop: false }` [INFO] [stdout] 8e984c0654472ffad855b56d5e4561e564c8c25d22547d06abc39b1b5d5cd5df [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 1a66f2488c9d54596adb905f4b3f53f6bbd688e4c21f544a2b93a2d7cc8340ad [INFO] running `Command { std: "docker" "start" "-a" "1a66f2488c9d54596adb905f4b3f53f6bbd688e4c21f544a2b93a2d7cc8340ad", kill_on_drop: false }` [INFO] [stderr] Compiling gazer v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `GzBuilder` [INFO] [stdout] --> src/main.rs:6:27 [INFO] [stdout] | [INFO] [stdout] 6 | use flate2::{Compression, GzBuilder}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/main.rs:11:15 [INFO] [stdout] | [INFO] [stdout] 11 | use std::io::{Read, Write, Seek, SeekFrom}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Write` [INFO] [stdout] --> src/main.rs:11:21 [INFO] [stdout] | [INFO] [stdout] 11 | use std::io::{Read, Write, Seek, SeekFrom}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `perm` [INFO] [stdout] --> src/main.rs:95:13 [INFO] [stdout] | [INFO] [stdout] 95 | let mut perm = output_file.metadata().unwrap().permissions(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_perm` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/gazer/tar_archive.rs:23:29 [INFO] [stdout] | [INFO] [stdout] 23 | if let Some(data) = archive.get_next_chunk() { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:41:14 [INFO] [stdout] | [INFO] [stdout] 41 | fn do_create(mut input: Option, mut output: Values, compress: bool, verbose: bool) -> Option<()> { [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:95:9 [INFO] [stdout] | [INFO] [stdout] 95 | let mut perm = output_file.metadata().unwrap().permissions(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | let mut traversed = File::open(archive.next()?).expect("bruh"); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `summarize` [INFO] [stdout] --> src/main.rs:127:4 [INFO] [stdout] | [INFO] [stdout] 127 | fn summarize(result: Option<()>) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:103:5 [INFO] [stdout] | [INFO] [stdout] 103 | output_file.seek(SeekFrom::End(0)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.16s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/gazer-2720d522978ed57d) [INFO] running `Command { std: "docker" "inspect" "1a66f2488c9d54596adb905f4b3f53f6bbd688e4c21f544a2b93a2d7cc8340ad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1a66f2488c9d54596adb905f4b3f53f6bbd688e4c21f544a2b93a2d7cc8340ad", kill_on_drop: false }` [INFO] [stdout] 1a66f2488c9d54596adb905f4b3f53f6bbd688e4c21f544a2b93a2d7cc8340ad [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 43325899f871827f38d03b84c513b799ee6167be882a0fd7d814409fb2f630f9 [INFO] running `Command { std: "docker" "start" "-a" "43325899f871827f38d03b84c513b799ee6167be882a0fd7d814409fb2f630f9", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `GzBuilder` [INFO] [stdout] [INFO] [stderr] --> src/main.rs:6:27 [INFO] [stdout] running 0 tests [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] 6 | use flate2::{Compression, GzBuilder}; [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::error::Error` [INFO] [stderr] --> src/main.rs:14:5 [INFO] [stderr] | [INFO] [stderr] 14 | use std::error::Error; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Read` [INFO] [stderr] --> src/main.rs:11:15 [INFO] [stderr] | [INFO] [stderr] 11 | use std::io::{Read, Write, Seek, SeekFrom}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Write` [INFO] [stderr] --> src/main.rs:11:21 [INFO] [stderr] | [INFO] [stderr] 11 | use std::io::{Read, Write, Seek, SeekFrom}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `perm` [INFO] [stderr] --> src/main.rs:95:13 [INFO] [stderr] | [INFO] [stderr] 95 | let mut perm = output_file.metadata().unwrap().permissions(); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_perm` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `data` [INFO] [stderr] --> src/gazer/tar_archive.rs:23:29 [INFO] [stderr] | [INFO] [stderr] 23 | if let Some(data) = archive.get_next_chunk() { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:41:14 [INFO] [stderr] | [INFO] [stderr] 41 | fn do_create(mut input: Option, mut output: Values, compress: bool, verbose: bool) -> Option<()> { [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/main.rs:95:9 [INFO] [stderr] | [INFO] [stderr] 95 | let mut perm = output_file.metadata().unwrap().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/main.rs:118:9 [INFO] [stderr] | [INFO] [stderr] 118 | let mut traversed = File::open(archive.next()?).expect("bruh"); [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `summarize` [INFO] [stderr] --> src/main.rs:127:4 [INFO] [stderr] | [INFO] [stderr] 127 | fn summarize(result: Option<()>) { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:103:5 [INFO] [stderr] | [INFO] [stderr] 103 | output_file.seek(SeekFrom::End(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: `gazer` (bin "gazer" test) generated 11 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/gazer-2720d522978ed57d) [INFO] running `Command { std: "docker" "inspect" "43325899f871827f38d03b84c513b799ee6167be882a0fd7d814409fb2f630f9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "43325899f871827f38d03b84c513b799ee6167be882a0fd7d814409fb2f630f9", kill_on_drop: false }` [INFO] [stdout] 43325899f871827f38d03b84c513b799ee6167be882a0fd7d814409fb2f630f9