[INFO] updating cached repository https://github.com/chucksmash/hejmo
[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] 86a850454cbbcaa9d943bfe334b3a124875c4802
[INFO] testing chucksmash/hejmo against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchucksmash%2Fhejmo" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chucksmash/hejmo on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chucksmash/hejmo
[INFO] finished tweaking git repo https://github.com/chucksmash/hejmo
[INFO] tweaked toml for git repo https://github.com/chucksmash/hejmo written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/chucksmash/hejmo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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_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" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbdb7208ebb7e3b94c1d9103364ac7e640e2022926dafb3259b496ec911db46e
[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" "bbdb7208ebb7e3b94c1d9103364ac7e640e2022926dafb3259b496ec911db46e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbdb7208ebb7e3b94c1d9103364ac7e640e2022926dafb3259b496ec911db46e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbdb7208ebb7e3b94c1d9103364ac7e640e2022926dafb3259b496ec911db46e", kill_on_drop: false }`
[INFO] [stdout] bbdb7208ebb7e3b94c1d9103364ac7e640e2022926dafb3259b496ec911db46e
[INFO] running `Command { std: "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=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" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cf6a85830d4f5805d3cffdfdf08c425f31c768dd02002ba1f2c735583ddd7ad
[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" "2cf6a85830d4f5805d3cffdfdf08c425f31c768dd02002ba1f2c735583ddd7ad", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling regex-syntax v0.6.0
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling hejmo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/rope/tree.rs:535:52
[INFO] [stdout]     |
[INFO] [stdout] 535 |     pub fn prev<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/rope/tree.rs:585:52
[INFO] [stdout]     |
[INFO] [stdout] 585 |     pub fn next<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/document.rs:76:33
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 Delta::Delete { text, pos } => {
[INFO] [stdout]    |                                 ^^^^ help: try ignoring the field: `text: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/document.rs:93:33
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 Delta::Delete { text, pos } => {
[INFO] [stdout]    |                                 ^^^^ help: try ignoring the field: `text: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.37s
[INFO] running `Command { std: "docker" "inspect" "2cf6a85830d4f5805d3cffdfdf08c425f31c768dd02002ba1f2c735583ddd7ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cf6a85830d4f5805d3cffdfdf08c425f31c768dd02002ba1f2c735583ddd7ad", kill_on_drop: false }`
[INFO] [stdout] 2cf6a85830d4f5805d3cffdfdf08c425f31c768dd02002ba1f2c735583ddd7ad
[INFO] running `Command { std: "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=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" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97b3997a62f49883652d1946185fac675acc2d432a68d2bdd34541c4b4e548c5
[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" "97b3997a62f49883652d1946185fac675acc2d432a68d2bdd34541c4b4e548c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling hejmo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/rope/tree.rs:535:52
[INFO] [stdout]     |
[INFO] [stdout] 535 |     pub fn prev<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/rope/tree.rs:585:52
[INFO] [stdout]     |
[INFO] [stdout] 585 |     pub fn next<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/document.rs:76:33
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 Delta::Delete { text, pos } => {
[INFO] [stdout]    |                                 ^^^^ help: try ignoring the field: `text: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/document.rs:93:33
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 Delta::Delete { text, pos } => {
[INFO] [stdout]    |                                 ^^^^ help: try ignoring the field: `text: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/rope/tree.rs:535:52
[INFO] [stdout]     |
[INFO] [stdout] 535 |     pub fn prev<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/rope/tree.rs:585:52
[INFO] [stdout]     |
[INFO] [stdout] 585 |     pub fn next<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stdout]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/document.rs:76:33
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 Delta::Delete { text, pos } => {
[INFO] [stdout]    |                                 ^^^^ help: try ignoring the field: `text: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/document.rs:93:33
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 Delta::Delete { text, pos } => {
[INFO] [stdout]    |                                 ^^^^ help: try ignoring the field: `text: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `Command { std: "docker" "inspect" "97b3997a62f49883652d1946185fac675acc2d432a68d2bdd34541c4b4e548c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97b3997a62f49883652d1946185fac675acc2d432a68d2bdd34541c4b4e548c5", kill_on_drop: false }`
[INFO] [stdout] 97b3997a62f49883652d1946185fac675acc2d432a68d2bdd34541c4b4e548c5
[INFO] running `Command { std: "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=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" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 31bf4d1be9cc2a9a7e069a16cabf5c46c9d88eaee7163b65ec3cee92b6bd0dd3
[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" "31bf4d1be9cc2a9a7e069a16cabf5c46c9d88eaee7163b65ec3cee92b6bd0dd3", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/rope/tree.rs:535:52
[INFO] [stderr]     |
[INFO] [stderr] 535 |     pub fn prev<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stderr]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/rope/tree.rs:585:52
[INFO] [stderr]     |
[INFO] [stderr] 585 |     pub fn next<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stderr]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]   --> src/document.rs:76:33
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 Delta::Delete { text, pos } => {
[INFO] [stderr]    |                                 ^^^^ help: try ignoring the field: `text: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]   --> src/document.rs:93:33
[INFO] [stderr]    |
[INFO] [stderr] 93 |                 Delta::Delete { text, pos } => {
[INFO] [stderr]    |                                 ^^^^ help: try ignoring the field: `text: _`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/rope/tree.rs:535:52
[INFO] [stderr]     |
[INFO] [stderr] 535 |     pub fn prev<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stderr]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/rope/tree.rs:585:52
[INFO] [stderr]     |
[INFO] [stderr] 585 |     pub fn next<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stderr]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]   --> src/document.rs:76:33
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 Delta::Delete { text, pos } => {
[INFO] [stderr]    |                                 ^^^^ help: try ignoring the field: `text: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]   --> src/document.rs:93:33
[INFO] [stderr]    |
[INFO] [stderr] 93 |                 Delta::Delete { text, pos } => {
[INFO] [stderr]    |                                 ^^^^ help: try ignoring the field: `text: _`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/hejmo-2d5330f193c44038
[INFO] [stdout] 
[INFO] [stdout] running 35 tests
[INFO] [stdout] test rope::interval::tests::translate ... ok
[INFO] [stdout] test rope::interval::tests::suffix ... ok
[INFO] [stdout] test rope::interval::tests::new_variants ... ok
[INFO] [stdout] test delta::test::initialization_works ... ok
[INFO] [stdout] test rope::interval::tests::size ... ok
[INFO] [stdout] test rope::interval::tests::contains ... ok
[INFO] [stdout] test delta::test::doc_deltas ... ok
[INFO] [stdout] test rope::rope::tests::eq_small ... ok
[INFO] [stdout] test rope::interval::tests::empty ... ok
[INFO] [stdout] test rope::interval::tests::intersect ... ok
[INFO] [stdout] test rope::interval::tests::new_params ... ok
[INFO] [stdout] test rope::interval::tests::prefix ... ok
[INFO] [stdout] test rope::interval::tests::after ... ok
[INFO] [stdout] test rope::rope::tests::lines_raw_small ... ok
[INFO] [stdout] test rope::rope::tests::lines_small ... ok
[INFO] [stdout] test rope::rope::tests::offset_of_line_small ... ok
[INFO] [stdout] test rope::rope::tests::lines_med ... ok
[INFO] [stdout] test rope::rope::tests::next_codepoint_offset_small ... ok
[INFO] [stdout] test rope::rope::tests::next_grapheme_offset ... ok
[INFO] [stdout] test rope::tree::test::cursor_next_empty ... ok
[INFO] [stdout] test rope::interval::tests::before ... ok
[INFO] [stdout] test rope::rope::tests::eq_med ... ok
[INFO] [stdout] test rope::rope::tests::line_offsets ... ok
[INFO] [stdout] test rope::rope::tests::prev_grapheme_offset ... ok
[INFO] [stdout] test rope::rope::tests::replace_small ... ok
[INFO] [stdout] test delta::test::easy_inverse_works ... ok
[INFO] [stdout] test rope::rope::tests::prev_codepoint_offset_small ... ok
[INFO] [stdout] test rope::tree::test::cursor_prev_misc ... ok
[INFO] [stdout] test rope::rope::tests::line_of_offset_small ... ok
[INFO] [stdout] test rope::tree::test::cursor_next_misc ... ok
[INFO] [stdout] test rope::rope::tests::offset_of_line_panic ... ok
[INFO] [stdout] test rope::rope::tests::line_of_offset_panic ... ok
[INFO] [stdout] test rope::tree::test::cursor_next_triangle ... ok
[INFO] [stdout] test rope::rope::tests::append_large ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/demo-f511426ca6cc30f1
[INFO] [stdout] test rope::rope::tests::next_grapheme_offset_with_ris_of_leaf_boundaries ... ok
[INFO] [stderr]    Doc-tests hejmo
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 35 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/rope/tree.rs:535:52
[INFO] [stderr]     |
[INFO] [stderr] 535 |     pub fn prev<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stderr]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/rope/tree.rs:585:52
[INFO] [stderr]     |
[INFO] [stderr] 585 |     pub fn next<M: Metric<N>>(&mut self) -> Option<(usize)> {
[INFO] [stderr]     |                                                    ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[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" "31bf4d1be9cc2a9a7e069a16cabf5c46c9d88eaee7163b65ec3cee92b6bd0dd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31bf4d1be9cc2a9a7e069a16cabf5c46c9d88eaee7163b65ec3cee92b6bd0dd3", kill_on_drop: false }`
[INFO] [stdout] 31bf4d1be9cc2a9a7e069a16cabf5c46c9d88eaee7163b65ec3cee92b6bd0dd3