[INFO] fetching crate cargo-update-installed 0.1.2... [INFO] testing cargo-update-installed-0.1.2 against 1.55.0 for beta-1.56-1 [INFO] extracting crate cargo-update-installed 0.1.2 into /workspace/builds/worker-14/source [INFO] validating manifest of crates.io crate cargo-update-installed 0.1.2 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 crates.io crate cargo-update-installed 0.1.2 [INFO] finished tweaking crates.io crate cargo-update-installed 0.1.2 [INFO] tweaked toml for crates.io crate cargo-update-installed 0.1.2 written to /workspace/builds/worker-14/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] eab1ca9964041cddfed3661839e91d1b36b7261de1693307c0b9e18fd4739965 [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" "eab1ca9964041cddfed3661839e91d1b36b7261de1693307c0b9e18fd4739965", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "eab1ca9964041cddfed3661839e91d1b36b7261de1693307c0b9e18fd4739965", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "eab1ca9964041cddfed3661839e91d1b36b7261de1693307c0b9e18fd4739965", kill_on_drop: false }` [INFO] [stdout] eab1ca9964041cddfed3661839e91d1b36b7261de1693307c0b9e18fd4739965 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 01decde195d57abb5a4b29560a469f64b9a92823bb5cec3efaf4ce373f09cedf [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" "01decde195d57abb5a4b29560a469f64b9a92823bb5cec3efaf4ce373f09cedf", kill_on_drop: false }` [INFO] [stderr] Compiling cargo-update-installed v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `fs` is imported redundantly [INFO] [stdout] --> src/lib.rs:97:13 [INFO] [stdout] | [INFO] [stdout] 40 | use std::fs; [INFO] [stdout] | ------- the item `fs` is already imported here [INFO] [stdout] ... [INFO] [stdout] 97 | use std::fs; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:132:17 [INFO] [stdout] | [INFO] [stdout] 132 | ... writeln!(stderr(), "Warning: package {} is present multiple times in dummy Cargo.lock. Choosing version {}.", crate_name, version); [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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:213:17 [INFO] [stdout] | [INFO] [stdout] 213 | / writeln!( [INFO] [stdout] 214 | | stderr(), [INFO] [stdout] 215 | | "Warning: Git binaries are not supported. Ignoring `{}`.", [INFO] [stdout] 216 | | name [INFO] [stdout] 217 | | ); [INFO] [stdout] | |__________________^ [INFO] [stdout] | [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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:221:17 [INFO] [stdout] | [INFO] [stdout] 221 | / writeln!( [INFO] [stdout] 222 | | stderr(), [INFO] [stdout] 223 | | "Warning: Local binaries are not supported. Ignoring `{}`.", [INFO] [stdout] 224 | | name [INFO] [stdout] 225 | | ); [INFO] [stdout] | |__________________^ [INFO] [stdout] | [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: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:11:13 [INFO] [stdout] | [INFO] [stdout] 11 | writeln!(stderr(), "Error: {}", err); [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.97s [INFO] running `Command { std: "docker" "inspect" "01decde195d57abb5a4b29560a469f64b9a92823bb5cec3efaf4ce373f09cedf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "01decde195d57abb5a4b29560a469f64b9a92823bb5cec3efaf4ce373f09cedf", kill_on_drop: false }` [INFO] [stdout] 01decde195d57abb5a4b29560a469f64b9a92823bb5cec3efaf4ce373f09cedf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 535481d55fa79cd07a09e9a2b5bf9edf39686039e82a0c9f169e35115c22b915 [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" "535481d55fa79cd07a09e9a2b5bf9edf39686039e82a0c9f169e35115c22b915", kill_on_drop: false }` [INFO] [stderr] Compiling cargo-update-installed v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `fs` is imported redundantly [INFO] [stdout] --> src/lib.rs:97:13 [INFO] [stdout] | [INFO] [stdout] 40 | use std::fs; [INFO] [stdout] | ------- the item `fs` is already imported here [INFO] [stdout] ... [INFO] [stdout] 97 | use std::fs; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:132:17 [INFO] [stdout] | [INFO] [stdout] 132 | ... writeln!(stderr(), "Warning: package {} is present multiple times in dummy Cargo.lock. Choosing version {}.", crate_name, version); [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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:213:17 [INFO] [stdout] | [INFO] [stdout] 213 | / writeln!( [INFO] [stdout] 214 | | stderr(), [INFO] [stdout] 215 | | "Warning: Git binaries are not supported. Ignoring `{}`.", [INFO] [stdout] 216 | | name [INFO] [stdout] 217 | | ); [INFO] [stdout] | |__________________^ [INFO] [stdout] | [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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:221:17 [INFO] [stdout] | [INFO] [stdout] 221 | / writeln!( [INFO] [stdout] 222 | | stderr(), [INFO] [stdout] 223 | | "Warning: Local binaries are not supported. Ignoring `{}`.", [INFO] [stdout] 224 | | name [INFO] [stdout] 225 | | ); [INFO] [stdout] | |__________________^ [INFO] [stdout] | [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: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `fs` is imported redundantly [INFO] [stdout] --> src/lib.rs:97:13 [INFO] [stdout] | [INFO] [stdout] 40 | use std::fs; [INFO] [stdout] | ------- the item `fs` is already imported here [INFO] [stdout] ... [INFO] [stdout] 97 | use std::fs; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:11:13 [INFO] [stdout] | [INFO] [stdout] 11 | writeln!(stderr(), "Error: {}", err); [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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:132:17 [INFO] [stdout] | [INFO] [stdout] 132 | ... writeln!(stderr(), "Warning: package {} is present multiple times in dummy Cargo.lock. Choosing version {}.", crate_name, version); [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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:213:17 [INFO] [stdout] | [INFO] [stdout] 213 | / writeln!( [INFO] [stdout] 214 | | stderr(), [INFO] [stdout] 215 | | "Warning: Git binaries are not supported. Ignoring `{}`.", [INFO] [stdout] 216 | | name [INFO] [stdout] 217 | | ); [INFO] [stdout] | |__________________^ [INFO] [stdout] | [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: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:221:17 [INFO] [stdout] | [INFO] [stdout] 221 | / writeln!( [INFO] [stdout] 222 | | stderr(), [INFO] [stdout] 223 | | "Warning: Local binaries are not supported. Ignoring `{}`.", [INFO] [stdout] 224 | | name [INFO] [stdout] 225 | | ); [INFO] [stdout] | |__________________^ [INFO] [stdout] | [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: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.55s [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "535481d55fa79cd07a09e9a2b5bf9edf39686039e82a0c9f169e35115c22b915", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "535481d55fa79cd07a09e9a2b5bf9edf39686039e82a0c9f169e35115c22b915", kill_on_drop: false }` [INFO] [stdout] 535481d55fa79cd07a09e9a2b5bf9edf39686039e82a0c9f169e35115c22b915 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] fe364baaa294f7e08ed5f5a27e6cb1a1f9af8f3f86fe74ddbc24b8770c6f835b [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" "fe364baaa294f7e08ed5f5a27e6cb1a1f9af8f3f86fe74ddbc24b8770c6f835b", kill_on_drop: false }` [INFO] [stderr] warning: the item `fs` is imported redundantly [INFO] [stderr] --> src/lib.rs:97:13 [INFO] [stderr] | [INFO] [stderr] 40 | use std::fs; [INFO] [stderr] | ------- the item `fs` is already imported here [INFO] [stderr] ... [INFO] [stderr] 97 | use std::fs; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/lib.rs:132:17 [INFO] [stderr] | [INFO] [stderr] 132 | ... writeln!(stderr(), "Warning: package {} is present multiple times in dummy Cargo.lock. Choosing version {}.", crate_name, version); [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: unused `Result` that must be used [INFO] [stderr] --> src/lib.rs:213:17 [INFO] [stderr] | [INFO] [stderr] 213 | / writeln!( [INFO] [stderr] 214 | | stderr(), [INFO] [stderr] 215 | | "Warning: Git binaries are not supported. Ignoring `{}`.", [INFO] [stderr] 216 | | name [INFO] [stderr] 217 | | ); [INFO] [stderr] | |__________________^ [INFO] [stderr] | [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: unused `Result` that must be used [INFO] [stderr] --> src/lib.rs:221:17 [INFO] [stderr] | [INFO] [stderr] 221 | / writeln!( [INFO] [stderr] 222 | | stderr(), [INFO] [stderr] 223 | | "Warning: Local binaries are not supported. Ignoring `{}`.", [INFO] [stderr] 224 | | name [INFO] [stderr] 225 | | ); [INFO] [stderr] | |__________________^ [INFO] [stderr] | [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: `cargo-update-installed` (lib) generated 4 warnings [INFO] [stderr] warning: `cargo-update-installed` (lib test) generated 4 warnings (4 duplicates) [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:11:13 [INFO] [stderr] | [INFO] [stderr] 11 | writeln!(stderr(), "Error: {}", err); [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: `cargo-update-installed` (bin "cargo-update-installed" test) generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/cargo_update_installed-25c038d829fe3eae) [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] [stderr] Running unittests (/opt/rustwide/target/debug/deps/cargo_update_installed-fae260f785287560) [INFO] [stdout] [INFO] [stderr] Doc-tests cargo-update-installed [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] [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" "fe364baaa294f7e08ed5f5a27e6cb1a1f9af8f3f86fe74ddbc24b8770c6f835b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fe364baaa294f7e08ed5f5a27e6cb1a1f9af8f3f86fe74ddbc24b8770c6f835b", kill_on_drop: false }` [INFO] [stdout] fe364baaa294f7e08ed5f5a27e6cb1a1f9af8f3f86fe74ddbc24b8770c6f835b