[INFO] cloning repository https://github.com/bhamrick/rust_splay
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bhamrick/rust_splay" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbhamrick%2Frust_splay", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbhamrick%2Frust_splay'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90b77d8f7206999f6caedf03ffcc5c5b95bbde9d
[INFO] testing bhamrick/rust_splay against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbhamrick%2Frust_splay" "/workspace/builds/worker-37/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-37/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bhamrick/rust_splay 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/bhamrick/rust_splay
[INFO] finished tweaking git repo https://github.com/bhamrick/rust_splay
[INFO] tweaked toml for git repo https://github.com/bhamrick/rust_splay written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] crate git repo https://github.com/bhamrick/rust_splay 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] 4ec52c82238552d0357934a13677229f8248dbe060f0af553c9e453e82d4b07a
[INFO] running `Command { std: "docker" "start" "-a" "4ec52c82238552d0357934a13677229f8248dbe060f0af553c9e453e82d4b07a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ec52c82238552d0357934a13677229f8248dbe060f0af553c9e453e82d4b07a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ec52c82238552d0357934a13677229f8248dbe060f0af553c9e453e82d4b07a", kill_on_drop: false }`
[INFO] [stdout] 4ec52c82238552d0357934a13677229f8248dbe060f0af553c9e453e82d4b07a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] [stdout] 32549b1a2bac08ebee7f4adf622aec593dbc1b0e29a107bc1da82e082eee397a
[INFO] running `Command { std: "docker" "start" "-a" "32549b1a2bac08ebee7f4adf622aec593dbc1b0e29a107bc1da82e082eee397a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_splay v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/main.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn combine(TreeF<A, Self>) -> Self;
[INFO] [stdout]    |                ^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: TreeF<A, Self>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/main.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn separate(Self) -> TreeF<A, Self>;
[INFO] [stdout]    |                 ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Self`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/main.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn is_branch(&Self) -> bool;
[INFO] [stdout]    |                  ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/main.rs:497:26
[INFO] [stdout]     |
[INFO] [stdout] 497 |     fn insert(&mut self, A);
[INFO] [stdout]     |                          ^ help: try naming the parameter or explicitly ignoring it: `_: A`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/main.rs:498:28
[INFO] [stdout]     |
[INFO] [stdout] 498 |     fn contains(&mut self, A) -> bool;
[INFO] [stdout]     |                            ^ help: try naming the parameter or explicitly ignoring it: `_: A`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/main.rs:499:33
[INFO] [stdout]     |
[INFO] [stdout] 499 |     fn splay_to_root(&mut self, A);
[INFO] [stdout]     |                                 ^ help: try naming the parameter or explicitly ignoring it: `_: A`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/main.rs:552:17
[INFO] [stdout]     |
[INFO] [stdout] 552 |     fn reversed(Self) -> Self;
[INFO] [stdout]     |                 ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Self`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:788:65
[INFO] [stdout]     |
[INFO] [stdout] 788 |         Err(why) => panic!("Could not open input file: {}", why.description()),
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:793:66
[INFO] [stdout]     |
[INFO] [stdout] 793 |         Err(why) => panic!("Could not open output file: {}", why.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:800:58
[INFO] [stdout]     |
[INFO] [stdout] 800 |         Err(why) => panic!("Error reading data: {}", why.description()),
[INFO] [stdout]     |                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stdout]    --> src/main.rs:803:42
[INFO] [stdout]     |
[INFO] [stdout] 803 |     let line1_tokens : Vec<&str> = line1.trim_right().split(' ').collect();
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:805:58
[INFO] [stdout]     |
[INFO] [stdout] 805 |         Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:809:58
[INFO] [stdout]     |
[INFO] [stdout] 809 |         Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:816:62
[INFO] [stdout]     |
[INFO] [stdout] 816 |             Err(why) => panic!("Error reading data: {}", why.description()),
[INFO] [stdout]     |                                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stdout]    --> src/main.rs:819:39
[INFO] [stdout]     |
[INFO] [stdout] 819 |         let tokens : Vec<&str> = line.trim_right().split(' ').collect();
[INFO] [stdout]     |                                       ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:822:66
[INFO] [stdout]     |
[INFO] [stdout] 822 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:829:66
[INFO] [stdout]     |
[INFO] [stdout] 829 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:839:66
[INFO] [stdout]     |
[INFO] [stdout] 839 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:843:66
[INFO] [stdout]     |
[INFO] [stdout] 843 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `Command { std: "docker" "inspect" "32549b1a2bac08ebee7f4adf622aec593dbc1b0e29a107bc1da82e082eee397a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32549b1a2bac08ebee7f4adf622aec593dbc1b0e29a107bc1da82e082eee397a", kill_on_drop: false }`
[INFO] [stdout] 32549b1a2bac08ebee7f4adf622aec593dbc1b0e29a107bc1da82e082eee397a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] e19395528a60c5cbda0f765a61a889952cfdb354a1166fb08e6341494125b862
[INFO] running `Command { std: "docker" "start" "-a" "e19395528a60c5cbda0f765a61a889952cfdb354a1166fb08e6341494125b862", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_splay v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/main.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn combine(TreeF<A, Self>) -> Self;
[INFO] [stdout]    |                ^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: TreeF<A, Self>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/main.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn separate(Self) -> TreeF<A, Self>;
[INFO] [stdout]    |                 ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Self`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/main.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn is_branch(&Self) -> bool;
[INFO] [stdout]    |                  ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/main.rs:497:26
[INFO] [stdout]     |
[INFO] [stdout] 497 |     fn insert(&mut self, A);
[INFO] [stdout]     |                          ^ help: try naming the parameter or explicitly ignoring it: `_: A`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/main.rs:498:28
[INFO] [stdout]     |
[INFO] [stdout] 498 |     fn contains(&mut self, A) -> bool;
[INFO] [stdout]     |                            ^ help: try naming the parameter or explicitly ignoring it: `_: A`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/main.rs:499:33
[INFO] [stdout]     |
[INFO] [stdout] 499 |     fn splay_to_root(&mut self, A);
[INFO] [stdout]     |                                 ^ help: try naming the parameter or explicitly ignoring it: `_: A`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/main.rs:552:17
[INFO] [stdout]     |
[INFO] [stdout] 552 |     fn reversed(Self) -> Self;
[INFO] [stdout]     |                 ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Self`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:788:65
[INFO] [stdout]     |
[INFO] [stdout] 788 |         Err(why) => panic!("Could not open input file: {}", why.description()),
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:793:66
[INFO] [stdout]     |
[INFO] [stdout] 793 |         Err(why) => panic!("Could not open output file: {}", why.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:800:58
[INFO] [stdout]     |
[INFO] [stdout] 800 |         Err(why) => panic!("Error reading data: {}", why.description()),
[INFO] [stdout]     |                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stdout]    --> src/main.rs:803:42
[INFO] [stdout]     |
[INFO] [stdout] 803 |     let line1_tokens : Vec<&str> = line1.trim_right().split(' ').collect();
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:805:58
[INFO] [stdout]     |
[INFO] [stdout] 805 |         Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:809:58
[INFO] [stdout]     |
[INFO] [stdout] 809 |         Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:816:62
[INFO] [stdout]     |
[INFO] [stdout] 816 |             Err(why) => panic!("Error reading data: {}", why.description()),
[INFO] [stdout]     |                                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stdout]    --> src/main.rs:819:39
[INFO] [stdout]     |
[INFO] [stdout] 819 |         let tokens : Vec<&str> = line.trim_right().split(' ').collect();
[INFO] [stdout]     |                                       ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:822:66
[INFO] [stdout]     |
[INFO] [stdout] 822 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:829:66
[INFO] [stdout]     |
[INFO] [stdout] 829 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:839:66
[INFO] [stdout]     |
[INFO] [stdout] 839 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:843:66
[INFO] [stdout]     |
[INFO] [stdout] 843 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "e19395528a60c5cbda0f765a61a889952cfdb354a1166fb08e6341494125b862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e19395528a60c5cbda0f765a61a889952cfdb354a1166fb08e6341494125b862", kill_on_drop: false }`
[INFO] [stdout] e19395528a60c5cbda0f765a61a889952cfdb354a1166fb08e6341494125b862
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] 5fde239ba04b859038f6b3fdae54c9b884ca4808491f51a634cec4d4edf1dc2c
[INFO] running `Command { std: "docker" "start" "-a" "5fde239ba04b859038f6b3fdae54c9b884ca4808491f51a634cec4d4edf1dc2c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/main.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn combine(TreeF<A, Self>) -> Self;
[INFO] [stderr]    |                ^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: TreeF<A, Self>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/main.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn separate(Self) -> TreeF<A, Self>;
[INFO] [stderr]    |                 ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Self`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/main.rs:19:18
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn is_branch(&Self) -> bool;
[INFO] [stderr]    |                  ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]    --> src/main.rs:497:26
[INFO] [stderr]     |
[INFO] [stderr] 497 |     fn insert(&mut self, A);
[INFO] [stderr]     |                          ^ help: try naming the parameter or explicitly ignoring it: `_: A`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]    --> src/main.rs:498:28
[INFO] [stderr]     |
[INFO] [stderr] 498 |     fn contains(&mut self, A) -> bool;
[INFO] [stderr]     |                            ^ help: try naming the parameter or explicitly ignoring it: `_: A`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]    --> src/main.rs:499:33
[INFO] [stderr]     |
[INFO] [stderr] 499 |     fn splay_to_root(&mut self, A);
[INFO] [stderr]     |                                 ^ help: try naming the parameter or explicitly ignoring it: `_: A`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]    --> src/main.rs:552:17
[INFO] [stderr]     |
[INFO] [stderr] 552 |     fn reversed(Self) -> Self;
[INFO] [stderr]     |                 ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Self`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:788:65
[INFO] [stderr]     |
[INFO] [stderr] 788 |         Err(why) => panic!("Could not open input file: {}", why.description()),
[INFO] [stderr]     |                                                                 ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:793:66
[INFO] [stderr]     |
[INFO] [stderr] 793 |         Err(why) => panic!("Could not open output file: {}", why.description()),
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:800:58
[INFO] [stderr]     |
[INFO] [stderr] 800 |         Err(why) => panic!("Error reading data: {}", why.description()),
[INFO] [stderr]     |                                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stderr]    --> src/main.rs:803:42
[INFO] [stderr]     |
[INFO] [stderr] 803 |     let line1_tokens : Vec<&str> = line1.trim_right().split(' ').collect();
[INFO] [stderr]     |                                          ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:805:58
[INFO] [stderr]     |
[INFO] [stderr] 805 |         Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stderr]     |                                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:809:58
[INFO] [stderr]     |
[INFO] [stderr] 809 |         Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stderr]     |                                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:816:62
[INFO] [stderr]     |
[INFO] [stderr] 816 |             Err(why) => panic!("Error reading data: {}", why.description()),
[INFO] [stderr]     |                                                              ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stderr]    --> src/main.rs:819:39
[INFO] [stderr]     |
[INFO] [stderr] 819 |         let tokens : Vec<&str> = line.trim_right().split(' ').collect();
[INFO] [stderr]     |                                       ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:822:66
[INFO] [stderr]     |
[INFO] [stderr] 822 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:829:66
[INFO] [stderr]     |
[INFO] [stderr] 829 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:839:66
[INFO] [stderr]     |
[INFO] [stderr] 839 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:843:66
[INFO] [stderr]     |
[INFO] [stderr] 843 |                 Err(why) => panic!("Error parsing data: {}", why.description()),
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_splay` (bin "rust_splay" test) generated 19 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 16.48s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_splay-131c98d5574bb1be)
[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" "5fde239ba04b859038f6b3fdae54c9b884ca4808491f51a634cec4d4edf1dc2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fde239ba04b859038f6b3fdae54c9b884ca4808491f51a634cec4d4edf1dc2c", kill_on_drop: false }`
[INFO] [stdout] 5fde239ba04b859038f6b3fdae54c9b884ca4808491f51a634cec4d4edf1dc2c