[INFO] fetching crate asciimath 0.8.8...
[INFO] testing asciimath-0.8.8 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate asciimath 0.8.8 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate asciimath 0.8.8 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate asciimath 0.8.8
[INFO] finished tweaking crates.io crate asciimath 0.8.8
[INFO] tweaked toml for crates.io crate asciimath 0.8.8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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] 34ebc546b055572334bd424838049a0e9be4022117cc59a9686665adf5dccbac
[INFO] running `Command { std: "docker" "start" "-a" "34ebc546b055572334bd424838049a0e9be4022117cc59a9686665adf5dccbac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34ebc546b055572334bd424838049a0e9be4022117cc59a9686665adf5dccbac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34ebc546b055572334bd424838049a0e9be4022117cc59a9686665adf5dccbac", kill_on_drop: false }`
[INFO] [stdout] 34ebc546b055572334bd424838049a0e9be4022117cc59a9686665adf5dccbac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a36714f327d5b4708c27aec6cf55c49f65e0327052b65d28662b632cc606047
[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" "9a36714f327d5b4708c27aec6cf55c49f65e0327052b65d28662b632cc606047", kill_on_drop: false }`
[INFO] [stderr]    Compiling asciimath v0.8.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer/mod.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |             '0'...'9' => {
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer/mod.rs:67:16
[INFO] [stdout]    |
[INFO] [stdout] 67 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer/mod.rs:67:28
[INFO] [stdout]    |
[INFO] [stdout] 67 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stdout]    |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "9a36714f327d5b4708c27aec6cf55c49f65e0327052b65d28662b632cc606047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a36714f327d5b4708c27aec6cf55c49f65e0327052b65d28662b632cc606047", kill_on_drop: false }`
[INFO] [stdout] 9a36714f327d5b4708c27aec6cf55c49f65e0327052b65d28662b632cc606047
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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] 85104ec438f17fabe77eca75c52de856b450942fd759945f58f9a59cbed7a112
[INFO] running `Command { std: "docker" "start" "-a" "85104ec438f17fabe77eca75c52de856b450942fd759945f58f9a59cbed7a112", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling asciimath v0.8.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer/mod.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |             '0'...'9' => {
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer/mod.rs:67:16
[INFO] [stdout]    |
[INFO] [stdout] 67 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer/mod.rs:67:28
[INFO] [stdout]    |
[INFO] [stdout] 67 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stdout]    |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer/mod.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |             '0'...'9' => {
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer/mod.rs:67:16
[INFO] [stdout]    |
[INFO] [stdout] 67 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer/mod.rs:67:28
[INFO] [stdout]    |
[INFO] [stdout] 67 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stdout]    |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.83s
[INFO] running `Command { std: "docker" "inspect" "85104ec438f17fabe77eca75c52de856b450942fd759945f58f9a59cbed7a112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85104ec438f17fabe77eca75c52de856b450942fd759945f58f9a59cbed7a112", kill_on_drop: false }`
[INFO] [stdout] 85104ec438f17fabe77eca75c52de856b450942fd759945f58f9a59cbed7a112
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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] aca43429245088b6c54eaf6f7bbfbc25ded5b6d1716f6d63bce4ee891d22cbb2
[INFO] running `Command { std: "docker" "start" "-a" "aca43429245088b6c54eaf6f7bbfbc25ded5b6d1716f6d63bce4ee891d22cbb2", kill_on_drop: false }`
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer/mod.rs:57:16
[INFO] [stderr]    |
[INFO] [stderr] 57 |             '0'...'9' => {
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer/mod.rs:67:16
[INFO] [stderr]    |
[INFO] [stderr] 67 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lexer/mod.rs:67:28
[INFO] [stderr]    |
[INFO] [stderr] 67 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stderr]    |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `asciimath` (lib) generated 3 warnings
[INFO] [stderr] warning: `asciimath` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/asciimath-e3479c9dcb24c97a)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test lexer::tests::test::func_args ... ok
[INFO] [stdout] test lexer::tests::test::lexer_negative_numbers ... ok
[INFO] [stdout] test lexer::tests::test::lexer_floats ... ok
[INFO] [stdout] test lexer::tests::test::test_implicit_multiplication ... ok
[INFO] [stdout] test lexer::tests::test::lexer_word_variables ... ok
[INFO] [stdout] test lexer::tests::test::test_resolve_vars ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/lib.rs (/opt/rustwide/target/debug/deps/lib-6ad12fc351a4a64e)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test func_floor_ceil ... ok
[INFO] [stdout] test func_min ... ok
[INFO] [stdout] test func_max ... ok
[INFO] [stdout] test constants ... ok
[INFO] [stdout] test func_nested ... ok
[INFO] [stdout] test func_not_enough_args ... ok
[INFO] [stdout] test division_by_zero ... ok
[INFO] [stdout] test paren_mismatch ... ok
[INFO] [stdout] test comparison_operators ... ok
[INFO] [stdout] test func_log ... ok
[INFO] [stdout] test neg_fn ... ok
[INFO] [stdout] test neg_numbers ... ok
[INFO] [stdout] test single_item ... ok
[INFO] [stdout] test order_of_operations ... ok
[INFO] [stdout] test simple_vars ... ok
[INFO] [stdout] test too_many_brackets ... ok
[INFO] [stdout] test user_defined_functions ... ok
[INFO] [stdout] test func_trig ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/mod.rs (/opt/rustwide/target/debug/deps/mod-1694724b1f97fa7c)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test lib::constants ... ok
[INFO] [stdout] test lib::func_floor_ceil ... ok
[INFO] [stdout] test lib::func_nested ... ok
[INFO] [stdout] test lib::func_not_enough_args ... ok
[INFO] [stdout] test lib::comparison_operators ... ok
[INFO] [stdout] test lib::neg_numbers ... ok
[INFO] [stdout] test lib::order_of_operations ... ok
[INFO] [stdout] test lib::neg_fn ... ok
[INFO] [stdout] test lib::user_defined_functions ... ok
[INFO] [stdout] test lib::single_item ... ok
[INFO] [stdout] test lib::func_trig ... ok
[INFO] [stdout] test lib::func_min ... ok
[INFO] [stdout] test lib::simple_vars ... ok
[INFO] [stdout] test lib::paren_mismatch ... ok
[INFO] [stdout] test lib::func_max ... ok
[INFO] [stdout] test lib::func_log ... ok
[INFO] [stdout] test lib::division_by_zero ... ok
[INFO] [stdout] test lib::too_many_brackets ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests asciimath
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/./src/lexer/mod.rs:57:16
[INFO] [stderr]    |
[INFO] [stderr] 57 |             '0'...'9' => {
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/./src/lexer/mod.rs:67:16
[INFO] [stderr]    |
[INFO] [stderr] 67 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/./src/lexer/mod.rs:67:28
[INFO] [stderr]    |
[INFO] [stderr] 67 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stderr]    |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 8) ... ok
[INFO] [stdout] test src/lib.rs - (line 51) ... ok
[INFO] [stdout] test src/lib.rs - (line 29) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.71s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aca43429245088b6c54eaf6f7bbfbc25ded5b6d1716f6d63bce4ee891d22cbb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aca43429245088b6c54eaf6f7bbfbc25ded5b6d1716f6d63bce4ee891d22cbb2", kill_on_drop: false }`
[INFO] [stdout] aca43429245088b6c54eaf6f7bbfbc25ded5b6d1716f6d63bce4ee891d22cbb2