[INFO] cloning repository https://github.com/erikjohnston/synapse-find-unreferenced-state-groups [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erikjohnston/synapse-find-unreferenced-state-groups" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferikjohnston%2Fsynapse-find-unreferenced-state-groups", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferikjohnston%2Fsynapse-find-unreferenced-state-groups'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 82817e4357fb44dda2d76087157c9b8a96781882 [INFO] testing erikjohnston/synapse-find-unreferenced-state-groups against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferikjohnston%2Fsynapse-find-unreferenced-state-groups" "/workspace/builds/worker-117/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-117/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups [INFO] finished tweaking git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups [INFO] tweaked toml for git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups written to /workspace/builds/worker-117/source/Cargo.toml [INFO] crate git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded digest v0.7.5 [INFO] [stderr] Downloaded postgres-shared v0.4.2 [INFO] [stderr] Downloaded md5 v0.3.8 [INFO] [stderr] Downloaded hmac v0.5.0 [INFO] [stderr] Downloaded console v0.6.2 [INFO] [stderr] Downloaded postgres-protocol v0.3.2 [INFO] [stderr] Downloaded crypto-mac v0.5.2 [INFO] [stderr] Downloaded postgres v0.15.2 [INFO] [stderr] Downloaded termios v0.3.0 [INFO] [stderr] Downloaded fallible-iterator v0.1.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8ea8691bbbc511b74e2280e53b46ce2af83ca2b2dc4f8c56ee9dd6d19da27140 [INFO] running `Command { std: "docker" "start" "-a" "8ea8691bbbc511b74e2280e53b46ce2af83ca2b2dc4f8c56ee9dd6d19da27140", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8ea8691bbbc511b74e2280e53b46ce2af83ca2b2dc4f8c56ee9dd6d19da27140", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8ea8691bbbc511b74e2280e53b46ce2af83ca2b2dc4f8c56ee9dd6d19da27140", kill_on_drop: false }` [INFO] [stdout] 8ea8691bbbc511b74e2280e53b46ce2af83ca2b2dc4f8c56ee9dd6d19da27140 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3424000d935180ab7e3fcf42835a986bea37caedb36ae45add3c3c7fd8c2a158 [INFO] running `Command { std: "docker" "start" "-a" "3424000d935180ab7e3fcf42835a986bea37caedb36ae45add3c3c7fd8c2a158", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.43 [INFO] [stderr] Compiling version_check v0.1.4 [INFO] [stderr] Compiling typenum v1.10.0 [INFO] [stderr] Compiling cfg-if v0.1.5 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling void v1.0.2 [INFO] [stderr] Compiling ucd-util v0.1.1 [INFO] [stderr] Compiling stable_deref_trait v1.1.1 [INFO] [stderr] Compiling arrayref v0.3.5 [INFO] [stderr] Compiling matches v0.1.8 [INFO] [stderr] Compiling byte-tools v0.2.0 [INFO] [stderr] Compiling rand_core v0.2.1 [INFO] [stderr] Compiling byteorder v1.2.6 [INFO] [stderr] Compiling constant_time_eq v0.1.3 [INFO] [stderr] Compiling safemem v0.2.0 [INFO] [stderr] Compiling fake-simd v0.1.2 [INFO] [stderr] Compiling siphasher v0.2.3 [INFO] [stderr] Compiling unicode-width v0.1.5 [INFO] [stderr] Compiling scopeguard v0.3.3 [INFO] [stderr] Compiling regex v1.0.5 [INFO] [stderr] Compiling unicode-normalization v0.1.7 [INFO] [stderr] Compiling utf8-ranges v1.0.1 [INFO] [stderr] Compiling fallible-iterator v0.1.5 [INFO] [stderr] Compiling md5 v0.3.8 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Compiling lazy_static v0.2.11 [INFO] [stderr] Compiling hex v0.2.0 [INFO] [stderr] Compiling strsim v0.7.0 [INFO] [stderr] Compiling vec_map v0.8.1 [INFO] [stderr] Compiling bitflags v1.0.4 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling log v0.4.5 [INFO] [stderr] Compiling unicode-bidi v0.3.4 [INFO] [stderr] Compiling owning_ref v0.3.3 [INFO] [stderr] Compiling unreachable v1.0.0 [INFO] [stderr] Compiling block-buffer v0.3.3 [INFO] [stderr] Compiling regex-syntax v0.6.2 [INFO] [stderr] Compiling regex-syntax v0.5.6 [INFO] [stderr] Compiling textwrap v0.10.0 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling smallvec v0.6.5 [INFO] [stderr] Compiling base64 v0.6.0 [INFO] [stderr] Compiling lock_api v0.1.3 [INFO] [stderr] Compiling phf_shared v0.7.23 [INFO] [stderr] Compiling memchr v2.1.0 [INFO] [stderr] Compiling lazy_static v1.1.0 [INFO] [stderr] Compiling phf v0.7.23 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling rand v0.4.3 [INFO] [stderr] Compiling rand v0.5.5 [INFO] [stderr] Compiling iovec v0.1.2 [INFO] [stderr] Compiling memchr v1.0.2 [INFO] [stderr] Compiling atty v0.2.11 [INFO] [stderr] Compiling termios v0.3.0 [INFO] [stderr] Compiling clicolors-control v0.2.0 [INFO] [stderr] Compiling socket2 v0.3.8 [INFO] [stderr] Compiling bytes v0.4.10 [INFO] [stderr] Compiling clap v2.32.0 [INFO] [stderr] Compiling parking_lot_core v0.3.1 [INFO] [stderr] Compiling thread_local v0.3.6 [INFO] [stderr] Compiling aho-corasick v0.6.8 [INFO] [stderr] Compiling rand v0.3.22 [INFO] [stderr] Compiling generic-array v0.9.0 [INFO] [stderr] Compiling stringprep v0.1.2 [INFO] [stderr] Compiling digest v0.7.5 [INFO] [stderr] Compiling crypto-mac v0.5.2 [INFO] [stderr] Compiling hmac v0.5.0 [INFO] [stderr] Compiling sha2 v0.7.1 [INFO] [stderr] Compiling parking_lot v0.6.4 [INFO] [stderr] Compiling postgres-protocol v0.3.2 [INFO] [stderr] Compiling postgres-shared v0.4.2 [INFO] [stderr] Compiling postgres v0.15.2 [INFO] [stderr] Compiling console v0.6.2 [INFO] [stderr] Compiling indicatif v0.9.0 [INFO] [stderr] Compiling rust-synapse-find-unreferenced-state-groups v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:42:24 [INFO] [stdout] | [INFO] [stdout] 42 | let mut args: Vec<&ToSql> = Vec::new(); [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn ToSql` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred [INFO] [stdout] --> src/main.rs:135:17 [INFO] [stdout] | [INFO] [stdout] 135 | .author(crate_authors!("\n")) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] = note: this warning originates in the macro `crate_authors` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred [INFO] [stdout] --> src/main.rs:135:17 [INFO] [stdout] | [INFO] [stdout] 135 | .author(crate_authors!("\n")) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `crate_authors` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:110:13 [INFO] [stdout] | [INFO] [stdout] 110 | let mut rows = stmt.query(&[&missing_sg]).unwrap(); [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: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:250:17 [INFO] [stdout] | [INFO] [stdout] 250 | writeln!(fs, "{}", state_group); [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] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 7.35s [INFO] running `Command { std: "docker" "inspect" "3424000d935180ab7e3fcf42835a986bea37caedb36ae45add3c3c7fd8c2a158", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3424000d935180ab7e3fcf42835a986bea37caedb36ae45add3c3c7fd8c2a158", kill_on_drop: false }` [INFO] [stdout] 3424000d935180ab7e3fcf42835a986bea37caedb36ae45add3c3c7fd8c2a158 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7f229485a6de2f329fc8b6e11606cae1c32f4d6bedc7ee04faf61b15708d58c5 [INFO] running `Command { std: "docker" "start" "-a" "7f229485a6de2f329fc8b6e11606cae1c32f4d6bedc7ee04faf61b15708d58c5", kill_on_drop: false }` [INFO] [stderr] Compiling rust-synapse-find-unreferenced-state-groups v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:42:24 [INFO] [stdout] | [INFO] [stdout] 42 | let mut args: Vec<&ToSql> = Vec::new(); [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn ToSql` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred [INFO] [stdout] --> src/main.rs:135:17 [INFO] [stdout] | [INFO] [stdout] 135 | .author(crate_authors!("\n")) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] = note: this warning originates in the macro `crate_authors` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred [INFO] [stdout] --> src/main.rs:135:17 [INFO] [stdout] | [INFO] [stdout] 135 | .author(crate_authors!("\n")) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `crate_authors` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:110:13 [INFO] [stdout] | [INFO] [stdout] 110 | let mut rows = stmt.query(&[&missing_sg]).unwrap(); [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: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:250:17 [INFO] [stdout] | [INFO] [stdout] 250 | writeln!(fs, "{}", state_group); [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] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.43s [INFO] running `Command { std: "docker" "inspect" "7f229485a6de2f329fc8b6e11606cae1c32f4d6bedc7ee04faf61b15708d58c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f229485a6de2f329fc8b6e11606cae1c32f4d6bedc7ee04faf61b15708d58c5", kill_on_drop: false }` [INFO] [stdout] 7f229485a6de2f329fc8b6e11606cae1c32f4d6bedc7ee04faf61b15708d58c5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 1a0b228fec1cab1a4f48bf5072f19a6528ef0e9b1b5573da9ee1ac9ba625939b [INFO] running `Command { std: "docker" "start" "-a" "1a0b228fec1cab1a4f48bf5072f19a6528ef0e9b1b5573da9ee1ac9ba625939b", kill_on_drop: false }` [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:42:24 [INFO] [stderr] | [INFO] [stderr] 42 | let mut args: Vec<&ToSql> = Vec::new(); [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn ToSql` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see issue #80165 [INFO] [stderr] [INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred [INFO] [stderr] --> src/main.rs:135:17 [INFO] [stderr] | [INFO] [stderr] 135 | .author(crate_authors!("\n")) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in the macro `crate_authors` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred [INFO] [stderr] --> src/main.rs:135:17 [INFO] [stderr] | [INFO] [stderr] 135 | .author(crate_authors!("\n")) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in the macro `crate_authors` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:110:13 [INFO] [stderr] | [INFO] [stderr] 110 | let mut rows = stmt.query(&[&missing_sg]).unwrap(); [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: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:250:17 [INFO] [stderr] | [INFO] [stderr] 250 | writeln!(fs, "{}", state_group); [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] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: `rust-synapse-find-unreferenced-state-groups` (bin "rust-synapse-find-unreferenced-state-groups" test) generated 5 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_synapse_find_unreferenced_state_groups-3008ec900a613248) [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; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "1a0b228fec1cab1a4f48bf5072f19a6528ef0e9b1b5573da9ee1ac9ba625939b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1a0b228fec1cab1a4f48bf5072f19a6528ef0e9b1b5573da9ee1ac9ba625939b", kill_on_drop: false }` [INFO] [stdout] 1a0b228fec1cab1a4f48bf5072f19a6528ef0e9b1b5573da9ee1ac9ba625939b