[INFO] cloning repository https://github.com/madprops/succ
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/madprops/succ" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadprops%2Fsucc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadprops%2Fsucc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54626ff61d23ba098890469ddd5eae4f7dc1189c
[INFO] testing madprops/succ against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadprops%2Fsucc" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/madprops/succ on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/madprops/succ
[INFO] finished tweaking git repo https://github.com/madprops/succ
[INFO] tweaked toml for git repo https://github.com/madprops/succ written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/madprops/succ already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dda1cca09661b2718cb290a25439bd3062f820808934bf82e310627d7e36f9a2
[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" "dda1cca09661b2718cb290a25439bd3062f820808934bf82e310627d7e36f9a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dda1cca09661b2718cb290a25439bd3062f820808934bf82e310627d7e36f9a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dda1cca09661b2718cb290a25439bd3062f820808934bf82e310627d7e36f9a2", kill_on_drop: false }`
[INFO] [stdout] dda1cca09661b2718cb290a25439bd3062f820808934bf82e310627d7e36f9a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--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] 37a820c2f82afc3c13537cbb44fd06098b7015cf7f04637cac180bc7323632a2
[INFO] running `Command { std: "docker" "start" "-a" "37a820c2f82afc3c13537cbb44fd06098b7015cf7f04637cac180bc7323632a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling fs_extra v1.1.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling succ v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> src/macros.rs:11:30
[INFO] [stdout]    |
[INFO] [stdout] 11 |         println!("{}", $left);
[INFO] [stdout]    |                              ^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/main.rs:73:13
[INFO] [stdout]    |
[INFO] [stdout] 73 |             p!("That is the current working directory.")
[INFO] [stdout]    |             -------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]    = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]    = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stdout]    = note: this warning originates in the macro `p` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/macros.rs:6:32
[INFO] [stdout]     |
[INFO] [stdout] 6   |         println!($left, $right);
[INFO] [stdout]     |                                ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:194:48
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   Ok(_) => if print {p!("Moved: {}", name)},
[INFO] [stdout]     |                                          --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stdout]     = note: this warning originates in the macro `p` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/macros.rs:11:30
[INFO] [stdout]     |
[INFO] [stdout] 11  |         println!("{}", $left);
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:205:48
[INFO] [stdout]     |
[INFO] [stdout] 205 | ...                   Ok(_) => if print {p!("Directory deleted.")},
[INFO] [stdout]     |                                          ------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stdout]     = note: this warning originates in the macro `p` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/macros.rs:11:30
[INFO] [stdout]     |
[INFO] [stdout] 11  |         println!("{}", $left);
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:211:31
[INFO] [stdout]     |
[INFO] [stdout] 211 |                     if print {p!("Done!")}
[INFO] [stdout]     |                               ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stdout]     = note: this warning originates in the macro `p` (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 dev [unoptimized + debuginfo] target(s) in 14.45s
[INFO] running `Command { std: "docker" "inspect" "37a820c2f82afc3c13537cbb44fd06098b7015cf7f04637cac180bc7323632a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37a820c2f82afc3c13537cbb44fd06098b7015cf7f04637cac180bc7323632a2", kill_on_drop: false }`
[INFO] [stdout] 37a820c2f82afc3c13537cbb44fd06098b7015cf7f04637cac180bc7323632a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d99b688ab218294e67ed229545d5098ef267781a3ec6adfb9b059c3737498c9b
[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" "d99b688ab218294e67ed229545d5098ef267781a3ec6adfb9b059c3737498c9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling succ v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> src/macros.rs:11:30
[INFO] [stdout]    |
[INFO] [stdout] 11 |         println!("{}", $left);
[INFO] [stdout]    |                              ^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/main.rs:73:13
[INFO] [stdout]    |
[INFO] [stdout] 73 |             p!("That is the current working directory.")
[INFO] [stdout]    |             -------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]    = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]    = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stdout]    = note: this warning originates in the macro `p` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/macros.rs:6:32
[INFO] [stdout]     |
[INFO] [stdout] 6   |         println!($left, $right);
[INFO] [stdout]     |                                ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:194:48
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   Ok(_) => if print {p!("Moved: {}", name)},
[INFO] [stdout]     |                                          --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stdout]     = note: this warning originates in the macro `p` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/macros.rs:11:30
[INFO] [stdout]     |
[INFO] [stdout] 11  |         println!("{}", $left);
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:205:48
[INFO] [stdout]     |
[INFO] [stdout] 205 | ...                   Ok(_) => if print {p!("Directory deleted.")},
[INFO] [stdout]     |                                          ------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stdout]     = note: this warning originates in the macro `p` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/macros.rs:11:30
[INFO] [stdout]     |
[INFO] [stdout] 11  |         println!("{}", $left);
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:211:31
[INFO] [stdout]     |
[INFO] [stdout] 211 |                     if print {p!("Done!")}
[INFO] [stdout]     |                               ----------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stdout]     = note: this warning originates in the macro `p` (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 1.20s
[INFO] running `Command { std: "docker" "inspect" "d99b688ab218294e67ed229545d5098ef267781a3ec6adfb9b059c3737498c9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d99b688ab218294e67ed229545d5098ef267781a3ec6adfb9b059c3737498c9b", kill_on_drop: false }`
[INFO] [stdout] d99b688ab218294e67ed229545d5098ef267781a3ec6adfb9b059c3737498c9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 527c193df5587435eeb1a51dc63e82858b569ec0ae5f288446be7840350640ae
[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" "527c193df5587435eeb1a51dc63e82858b569ec0ae5f288446be7840350640ae", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trailing semicolon in macro used in expression position
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/macros.rs:11:30
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 11 |         println!("{}", $left);
[INFO] [stdout] 
[INFO] [stderr]    |                              ^
[INFO] [stderr]    |
[INFO] [stderr]   ::: src/main.rs:73:13
[INFO] [stderr]    |
[INFO] [stderr] 73 |             p!("That is the current working directory.")
[INFO] [stderr]    |             -------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stderr]    = note: macro invocations at the end of a block are treated as expressions
[INFO] [stderr]    = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stderr]    = note: this warning originates in the macro `p` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trailing semicolon in macro used in expression position
[INFO] [stderr]    --> src/macros.rs:6:32
[INFO] [stderr]     |
[INFO] [stderr] 6   |         println!($left, $right);
[INFO] [stderr]     |                                ^
[INFO] [stderr]     |
[INFO] [stderr]    ::: src/main.rs:194:48
[INFO] [stderr]     |
[INFO] [stderr] 194 | ...                   Ok(_) => if print {p!("Moved: {}", name)},
[INFO] [stderr]     |                                          --------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stderr]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stderr]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stderr]     = note: this warning originates in the macro `p` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trailing semicolon in macro used in expression position
[INFO] [stderr]    --> src/macros.rs:11:30
[INFO] [stderr]     |
[INFO] [stderr] 11  |         println!("{}", $left);
[INFO] [stderr]     |                              ^
[INFO] [stderr]     |
[INFO] [stderr]    ::: src/main.rs:205:48
[INFO] [stderr]     |
[INFO] [stderr] 205 | ...                   Ok(_) => if print {p!("Directory deleted.")},
[INFO] [stderr]     |                                          ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stderr]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stderr]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stderr]     = note: this warning originates in the macro `p` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trailing semicolon in macro used in expression position
[INFO] [stderr]    --> src/macros.rs:11:30
[INFO] [stderr]     |
[INFO] [stderr] 11  |         println!("{}", $left);
[INFO] [stderr]     |                              ^
[INFO] [stderr]     |
[INFO] [stderr]    ::: src/main.rs:211:31
[INFO] [stderr]     |
[INFO] [stderr] 211 |                     if print {p!("Done!")}
[INFO] [stderr]     |                               ----------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stderr]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stderr]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `p`
[INFO] [stderr]     = note: this warning originates in the macro `p` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `succ` (bin "succ" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/succ-b144f41e67b0ab5d)
[INFO] running `Command { std: "docker" "inspect" "527c193df5587435eeb1a51dc63e82858b569ec0ae5f288446be7840350640ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "527c193df5587435eeb1a51dc63e82858b569ec0ae5f288446be7840350640ae", kill_on_drop: false }`
[INFO] [stdout] 527c193df5587435eeb1a51dc63e82858b569ec0ae5f288446be7840350640ae