[INFO] cloning repository https://github.com/thatmarkenglishguy/move_numeric_files
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thatmarkenglishguy/move_numeric_files" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthatmarkenglishguy%2Fmove_numeric_files", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthatmarkenglishguy%2Fmove_numeric_files'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 27e8e78e0bbf815923c805c63aea3b74427806a6
[INFO] checking thatmarkenglishguy/move_numeric_files against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthatmarkenglishguy%2Fmove_numeric_files" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thatmarkenglishguy/move_numeric_files on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thatmarkenglishguy/move_numeric_files
[INFO] finished tweaking git repo https://github.com/thatmarkenglishguy/move_numeric_files
[INFO] tweaked toml for git repo https://github.com/thatmarkenglishguy/move_numeric_files written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/thatmarkenglishguy/move_numeric_files already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62f0386cf73e9a78a424410384229520d9613ecbc7547d46b2f73ebebf81b0e4
[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" "62f0386cf73e9a78a424410384229520d9613ecbc7547d46b2f73ebebf81b0e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62f0386cf73e9a78a424410384229520d9613ecbc7547d46b2f73ebebf81b0e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62f0386cf73e9a78a424410384229520d9613ecbc7547d46b2f73ebebf81b0e4", kill_on_drop: false }`
[INFO] [stdout] 62f0386cf73e9a78a424410384229520d9613ecbc7547d46b2f73ebebf81b0e4
[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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--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] 65a426559176087a41a4da9e362764a3151ea2fee7e7a7c8ceee6e7919a59aa3
[INFO] running `Command { std: "docker" "start" "-a" "65a426559176087a41a4da9e362764a3151ea2fee7e7a7c8ceee6e7919a59aa3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling argh_shared v0.1.4
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling argh_derive v0.1.4
[INFO] [stderr]     Checking argh v0.1.4
[INFO] [stderr]     Checking move_numeric_files v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `from_command_line`
[INFO] [stdout]   --> src/move_numeric_files/command_line/parameters.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn from_command_line() -> Parameters {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `directory`
[INFO] [stdout]   --> src/move_numeric_files/command_line/parameters.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn directory(self: &Self) -> &std::path::Path {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `FileWalker`
[INFO] [stdout]  --> src/move_numeric_files/file_system/file_system_walker.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct FileWalker<'a> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/move_numeric_files/file_system/file_system_walker.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn new(root: &std::path::Path) -> FileWalker {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `walk`
[INFO] [stdout]   --> src/move_numeric_files/file_system/file_system_walker.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub(crate) fn walk<W>(&self, walker: &mut W) -> std::io::Result<()>
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_command_line`
[INFO] [stdout]   --> src/move_numeric_files/command_line/parameters.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn from_command_line() -> Parameters {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `directory`
[INFO] [stdout]   --> src/move_numeric_files/command_line/parameters.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn directory(self: &Self) -> &std::path::Path {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/move_numeric_files/file_system/tests/file_adder.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |             assert_file_exists!(file_adder_directory);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/move_numeric_files/file_system/tests/file_adder.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |         assert_file_does_not_exist!(file_adder_directory);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/move_numeric_files/file_system/tests/file_adder.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |             assert_file_exists!(file_path);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/move_numeric_files/file_system/tests/file_adder.rs:165:13
[INFO] [stdout]     |
[INFO] [stdout] 165 |             assert_file_exists!(file_path);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/move_numeric_files/file_system/tests/file_adder.rs:186:13
[INFO] [stdout]     |
[INFO] [stdout] 186 |             assert_file_exists!(file_path);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.69s
[INFO] running `Command { std: "docker" "inspect" "65a426559176087a41a4da9e362764a3151ea2fee7e7a7c8ceee6e7919a59aa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65a426559176087a41a4da9e362764a3151ea2fee7e7a7c8ceee6e7919a59aa3", kill_on_drop: false }`
[INFO] [stdout] 65a426559176087a41a4da9e362764a3151ea2fee7e7a7c8ceee6e7919a59aa3