[INFO] crate fakes-gen 0.2.2 is already in cache
[INFO] checking fakes-gen-0.2.2 against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] extracting crate fakes-gen 0.2.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate fakes-gen 0.2.2 on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fakes-gen 0.2.2
[INFO] finished tweaking crates.io crate fakes-gen 0.2.2
[INFO] tweaked toml for crates.io crate fakes-gen 0.2.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate fakes-gen 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cbebc84927803ba86dbdfc8f70c67acae575a096ed8f96aaf7ca9beedf057f7c
[INFO] running `"docker" "start" "-a" "cbebc84927803ba86dbdfc8f70c67acae575a096ed8f96aaf7ca9beedf057f7c"`
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking fakes-gen v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `w`
[INFO] [stderr]    --> src/converter/file_convert.rs:321:39
[INFO] [stderr]     |
[INFO] [stderr] 321 |     fn to_header<W: io::Write>(&self, w: &mut W) -> io::Result<()> {
[INFO] [stderr]     |                                       ^ help: consider prefixing with an underscore: `_w`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `w`
[INFO] [stderr]    --> src/converter/file_convert.rs:321:39
[INFO] [stderr]     |
[INFO] [stderr] 321 |     fn to_header<W: io::Write>(&self, w: &mut W) -> io::Result<()> {
[INFO] [stderr]     |                                       ^ help: consider prefixing with an underscore: `_w`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UnknownStringListFormat`
[INFO] [stderr]     --> src/cli/scanner.rs:1091:5
[INFO] [stderr]      |
[INFO] [stderr] 1091 |     UnknownStringListFormat(Vec<String>),
[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:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     FakerApp::new().run();
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cli/mod.rs:98:13
[INFO] [stderr]    |
[INFO] [stderr] 98 |             app.print_help();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1099:9
[INFO] [stderr]      |
[INFO] [stderr] 1099 |         write!(f, "{}:", title);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1101:13
[INFO] [stderr]      |
[INFO] [stderr] 1101 |             write!(f, "\n\t{} := {}", option.0, option.1);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1106:9
[INFO] [stderr]      |
[INFO] [stderr] 1106 |         writeln!(f, "Unknown format is \"{}\"", target);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1110:9
[INFO] [stderr]      |
[INFO] [stderr] 1110 |         writeln!(f, "Unknown format is {}", vec_to_str(subs));
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1123:17
[INFO] [stderr]      |
[INFO] [stderr] 1123 |                 writeln!(f, "Unknown Category is {}", s);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1124:17
[INFO] [stderr]      |
[INFO] [stderr] 1124 | /                 write!(
[INFO] [stderr] 1125 | |                     f,
[INFO] [stderr] 1126 | |                     "Usable Category is {}",
[INFO] [stderr] 1127 | |                     vec_to_str(
[INFO] [stderr] ...    |
[INFO] [stderr] 1132 | |                     )
[INFO] [stderr] 1133 | |                 );
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1142:17
[INFO] [stderr]      |
[INFO] [stderr] 1142 |                 writeln!(f, "Unknown Option is \"{}\"", s);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1143:17
[INFO] [stderr]      |
[INFO] [stderr] 1143 | /                 writeln!(
[INFO] [stderr] 1144 | |                     f,
[INFO] [stderr] 1145 | |                     "Usable Option's format is ({}) | ({})",
[INFO] [stderr] 1146 | |                     Scanner::NORMAL_OPTION_FORMAT,
[INFO] [stderr] 1147 | |                     Scanner::WITH_JOIN_OPTION_FORMAT
[INFO] [stderr] 1148 | |                 );
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1149:17
[INFO] [stderr]      |
[INFO] [stderr] 1149 | /                 write!(
[INFO] [stderr] 1150 | |                     f,
[INFO] [stderr] 1151 | |                     "And usable Option is {}",
[INFO] [stderr] 1152 | |                     vec_to_str(&Scanner::readable_options(*c))
[INFO] [stderr] 1153 | |                 );
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1158:17
[INFO] [stderr]      |
[INFO] [stderr] 1158 |                 write!(f, "Unknown characters \"{}\"", s_list.join("#"));
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1194:17
[INFO] [stderr]      |
[INFO] [stderr] 1194 |                 write!(f, "Range Err: {} is not larger than {}", from, to);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1198:17
[INFO] [stderr]      |
[INFO] [stderr] 1198 |                 writeln!(f, "Unknown join item option format \"{}\"", s);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UnknownStringListFormat`
[INFO] [stderr]     --> src/cli/scanner.rs:1091:5
[INFO] [stderr]      |
[INFO] [stderr] 1091 |     UnknownStringListFormat(Vec<String>),
[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:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     FakerApp::new().run();
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cli/mod.rs:98:13
[INFO] [stderr]    |
[INFO] [stderr] 98 |             app.print_help();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1099:9
[INFO] [stderr]      |
[INFO] [stderr] 1099 |         write!(f, "{}:", title);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1101:13
[INFO] [stderr]      |
[INFO] [stderr] 1101 |             write!(f, "\n\t{} := {}", option.0, option.1);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1106:9
[INFO] [stderr]      |
[INFO] [stderr] 1106 |         writeln!(f, "Unknown format is \"{}\"", target);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1110:9
[INFO] [stderr]      |
[INFO] [stderr] 1110 |         writeln!(f, "Unknown format is {}", vec_to_str(subs));
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1123:17
[INFO] [stderr]      |
[INFO] [stderr] 1123 |                 writeln!(f, "Unknown Category is {}", s);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1124:17
[INFO] [stderr]      |
[INFO] [stderr] 1124 | /                 write!(
[INFO] [stderr] 1125 | |                     f,
[INFO] [stderr] 1126 | |                     "Usable Category is {}",
[INFO] [stderr] 1127 | |                     vec_to_str(
[INFO] [stderr] ...    |
[INFO] [stderr] 1132 | |                     )
[INFO] [stderr] 1133 | |                 );
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1142:17
[INFO] [stderr]      |
[INFO] [stderr] 1142 |                 writeln!(f, "Unknown Option is \"{}\"", s);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1143:17
[INFO] [stderr]      |
[INFO] [stderr] 1143 | /                 writeln!(
[INFO] [stderr] 1144 | |                     f,
[INFO] [stderr] 1145 | |                     "Usable Option's format is ({}) | ({})",
[INFO] [stderr] 1146 | |                     Scanner::NORMAL_OPTION_FORMAT,
[INFO] [stderr] 1147 | |                     Scanner::WITH_JOIN_OPTION_FORMAT
[INFO] [stderr] 1148 | |                 );
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1149:17
[INFO] [stderr]      |
[INFO] [stderr] 1149 | /                 write!(
[INFO] [stderr] 1150 | |                     f,
[INFO] [stderr] 1151 | |                     "And usable Option is {}",
[INFO] [stderr] 1152 | |                     vec_to_str(&Scanner::readable_options(*c))
[INFO] [stderr] 1153 | |                 );
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1158:17
[INFO] [stderr]      |
[INFO] [stderr] 1158 |                 write!(f, "Unknown characters \"{}\"", s_list.join("#"));
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1194:17
[INFO] [stderr]      |
[INFO] [stderr] 1194 |                 write!(f, "Range Err: {} is not larger than {}", from, to);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/cli/scanner.rs:1198:17
[INFO] [stderr]      |
[INFO] [stderr] 1198 |                 writeln!(f, "Unknown join item option format \"{}\"", s);
[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 a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.41s
[INFO] running `"docker" "inspect" "cbebc84927803ba86dbdfc8f70c67acae575a096ed8f96aaf7ca9beedf057f7c"`
[INFO] running `"docker" "rm" "-f" "cbebc84927803ba86dbdfc8f70c67acae575a096ed8f96aaf7ca9beedf057f7c"`
[INFO] [stdout] cbebc84927803ba86dbdfc8f70c67acae575a096ed8f96aaf7ca9beedf057f7c