[INFO] cloning repository https://github.com/soenkehahn/i3-pretty-tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/soenkehahn/i3-pretty-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoenkehahn%2Fi3-pretty-tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoenkehahn%2Fi3-pretty-tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c56d6f6603bb9f7350946502b9e4013247774ae
[INFO] checking soenkehahn/i3-pretty-tree against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoenkehahn%2Fi3-pretty-tree" "/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/soenkehahn/i3-pretty-tree on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/soenkehahn/i3-pretty-tree
[INFO] finished tweaking git repo https://github.com/soenkehahn/i3-pretty-tree
[INFO] tweaked toml for git repo https://github.com/soenkehahn/i3-pretty-tree written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/soenkehahn/i3-pretty-tree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/soenkehahn/i3ipc-rs`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6aaa8fb33f82e211e1ad34d1be6469d3bbd860f7dd80db7e36a87f75e4f169db
[INFO] running `Command { std: "docker" "start" "-a" "6aaa8fb33f82e211e1ad34d1be6469d3bbd860f7dd80db7e36a87f75e4f169db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aaa8fb33f82e211e1ad34d1be6469d3bbd860f7dd80db7e36a87f75e4f169db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aaa8fb33f82e211e1ad34d1be6469d3bbd860f7dd80db7e36a87f75e4f169db", kill_on_drop: false }`
[INFO] [stdout] 6aaa8fb33f82e211e1ad34d1be6469d3bbd860f7dd80db7e36a87f75e4f169db
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94502e172c49af06ada06e0bfaa9171275023e20d98539e119828e384813e7fe
[INFO] running `Command { std: "docker" "start" "-a" "94502e172c49af06ada06e0bfaa9171275023e20d98539e119828e384813e7fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking unicode-segmentation v1.2.1
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking serde_json v1.0.37
[INFO] [stderr]     Checking i3ipc v0.9.0 (https://github.com/soenkehahn/i3ipc-rs?rev=75ccae0#75ccae06)
[INFO] [stderr]     Checking i3-pretty-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | type R<A> = Result<A, Box<Error>>;
[INFO] [stdout]   |                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | type R<A> = Result<A, Box<Error>>;
[INFO] [stdout]   |                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:214:17
[INFO] [stdout]     |
[INFO] [stdout] 214 |                 dot
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 214 |                 "{}", dot
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:224:66
[INFO] [stdout]     |
[INFO] [stdout] 224 |             assert!(dot.lines().any(|line| line == "n1 -> n2;"), dot);
[INFO] [stdout]     |                                                                  ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 224 |             assert!(dot.lines().any(|line| line == "n1 -> n2;"), "{}", dot);
[INFO] [stdout]     |                                                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:233:66
[INFO] [stdout]     |
[INFO] [stdout] 233 |             assert!(dot.lines().any(|line| line == "n2 -> n3;"), dot);
[INFO] [stdout]     |                                                                  ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 233 |             assert!(dot.lines().any(|line| line == "n2 -> n3;"), "{}", dot);
[INFO] [stdout]     |                                                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.33s
[INFO] running `Command { std: "docker" "inspect" "94502e172c49af06ada06e0bfaa9171275023e20d98539e119828e384813e7fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94502e172c49af06ada06e0bfaa9171275023e20d98539e119828e384813e7fe", kill_on_drop: false }`
[INFO] [stdout] 94502e172c49af06ada06e0bfaa9171275023e20d98539e119828e384813e7fe