[INFO] updating cached 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" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }` [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a84c39ae0c49e93eaf5f6f5e65ede3b70637ee94 [INFO] testing rodchenkov-sn/gazer against beta-2020-07-24 for beta-1.46-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodchenkov-sn%2Fgazer" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rodchenkov-sn/gazer on toolchain beta-2020-07-24 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", 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-9/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-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8fb1c0810382883f83df754b6b008317a9508a9b46c28da1cba2a80287ab514b [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "8fb1c0810382883f83df754b6b008317a9508a9b46c28da1cba2a80287ab514b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8fb1c0810382883f83df754b6b008317a9508a9b46c28da1cba2a80287ab514b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8fb1c0810382883f83df754b6b008317a9508a9b46c28da1cba2a80287ab514b", kill_on_drop: false }` [INFO] [stdout] 8fb1c0810382883f83df754b6b008317a9508a9b46c28da1cba2a80287ab514b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 47b94185058ce890255e78f8384c9f6c0b4013eae0f6cc0750024956c0fb5640 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "47b94185058ce890255e78f8384c9f6c0b4013eae0f6cc0750024956c0fb5640", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.70 [INFO] [stderr] Compiling strsim v0.6.0 [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:95:9 [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 `std::result::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 23.01s [INFO] running `Command { std: "docker" "inspect" "47b94185058ce890255e78f8384c9f6c0b4013eae0f6cc0750024956c0fb5640", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "47b94185058ce890255e78f8384c9f6c0b4013eae0f6cc0750024956c0fb5640", kill_on_drop: false }` [INFO] [stdout] 47b94185058ce890255e78f8384c9f6c0b4013eae0f6cc0750024956c0fb5640 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a1d851fbfcbe8ad702f5f6b22890dec5cc1f439e0f1f09b268974783d42fe965 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "a1d851fbfcbe8ad702f5f6b22890dec5cc1f439e0f1f09b268974783d42fe965", 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:95:9 [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 `std::result::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] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.02s [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "a1d851fbfcbe8ad702f5f6b22890dec5cc1f439e0f1f09b268974783d42fe965", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a1d851fbfcbe8ad702f5f6b22890dec5cc1f439e0f1f09b268974783d42fe965", kill_on_drop: false }` [INFO] [stdout] a1d851fbfcbe8ad702f5f6b22890dec5cc1f439e0f1f09b268974783d42fe965 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] c788b97e2fa9eb70d137ef20e972ec8951d4fa8369adba9554796541fe4034f9 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "c788b97e2fa9eb70d137ef20e972ec8951d4fa8369adba9554796541fe4034f9", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `GzBuilder` [INFO] [stderr] --> src/main.rs:6:27 [INFO] [stderr] | [INFO] [stderr] 6 | use flate2::{Compression, GzBuilder}; [INFO] [stderr] | ^^^^^^^^^ [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:95:9 [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 `std::result::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: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/gazer-2da72ada8e31a860 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "c788b97e2fa9eb70d137ef20e972ec8951d4fa8369adba9554796541fe4034f9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c788b97e2fa9eb70d137ef20e972ec8951d4fa8369adba9554796541fe4034f9", kill_on_drop: false }` [INFO] [stdout] c788b97e2fa9eb70d137ef20e972ec8951d4fa8369adba9554796541fe4034f9