[INFO] cloning repository https://github.com/jeffvandyke/char_count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeffvandyke/char_count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeffvandyke%2Fchar_count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeffvandyke%2Fchar_count'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa6f69407b91b6ca6a393ee229f902d8aa7b1b8d
[INFO] building jeffvandyke/char_count against try#9a3ef2cd3ecaae3c6ef59768612837d797602a6d for pr-137044-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeffvandyke%2Fchar_count" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeffvandyke/char_count on toolchain 9a3ef2cd3ecaae3c6ef59768612837d797602a6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9a3ef2cd3ecaae3c6ef59768612837d797602a6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jeffvandyke/char_count
[INFO] finished tweaking git repo https://github.com/jeffvandyke/char_count
[INFO] tweaked toml for git repo https://github.com/jeffvandyke/char_count written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jeffvandyke/char_count already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9a3ef2cd3ecaae3c6ef59768612837d797602a6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9a3ef2cd3ecaae3c6ef59768612837d797602a6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f720bc521a6ccd7a6be43b95bd66c0dbea51622e2fbeeef8d453728f83667db6
[INFO] running `Command { std: "docker" "start" "-a" "f720bc521a6ccd7a6be43b95bd66c0dbea51622e2fbeeef8d453728f83667db6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f720bc521a6ccd7a6be43b95bd66c0dbea51622e2fbeeef8d453728f83667db6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f720bc521a6ccd7a6be43b95bd66c0dbea51622e2fbeeef8d453728f83667db6", kill_on_drop: false }`
[INFO] [stdout] f720bc521a6ccd7a6be43b95bd66c0dbea51622e2fbeeef8d453728f83667db6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9a3ef2cd3ecaae3c6ef59768612837d797602a6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0a97d0c9e8a357b6e939bc006882a8382e7c9c1254c2818b584097822f85f96
[INFO] running `Command { std: "docker" "start" "-a" "e0a97d0c9e8a357b6e939bc006882a8382e7c9c1254c2818b584097822f85f96", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling ncurses v5.91.0
[INFO] [stderr]    Compiling pancurses v0.15.0
[INFO] [stderr]    Compiling char_count v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |             'a' ... 'z' => {
[INFO] [stdout]    |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wnd`
[INFO] [stdout]   --> src/main.rs:41:11
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn render(wnd: &curses::Window, text: &str, counts: &CharCounts)
[INFO] [stdout]    |           ^^^ help: if this is intentional, prefix it with an underscore: `_wnd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/main.rs:41:33
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn render(wnd: &curses::Window, text: &str, counts: &CharCounts)
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `counts`
[INFO] [stdout]   --> src/main.rs:41:45
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn render(wnd: &curses::Window, text: &str, counts: &CharCounts)
[INFO] [stdout]    |                                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_counts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `Command { std: "docker" "inspect" "e0a97d0c9e8a357b6e939bc006882a8382e7c9c1254c2818b584097822f85f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0a97d0c9e8a357b6e939bc006882a8382e7c9c1254c2818b584097822f85f96", kill_on_drop: false }`
[INFO] [stdout] e0a97d0c9e8a357b6e939bc006882a8382e7c9c1254c2818b584097822f85f96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9a3ef2cd3ecaae3c6ef59768612837d797602a6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e572fc5bbbc72c197ab49a0921e95ccc15d1f96713766bd47c0a5333d774af19
[INFO] running `Command { std: "docker" "start" "-a" "e572fc5bbbc72c197ab49a0921e95ccc15d1f96713766bd47c0a5333d774af19", kill_on_drop: false }`
[INFO] [stderr]    Compiling char_count v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |             'a' ... 'z' => {
[INFO] [stdout]    |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wnd`
[INFO] [stdout]   --> src/main.rs:41:11
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn render(wnd: &curses::Window, text: &str, counts: &CharCounts)
[INFO] [stdout]    |           ^^^ help: if this is intentional, prefix it with an underscore: `_wnd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]   --> src/main.rs:41:33
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn render(wnd: &curses::Window, text: &str, counts: &CharCounts)
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `counts`
[INFO] [stdout]   --> src/main.rs:41:45
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn render(wnd: &curses::Window, text: &str, counts: &CharCounts)
[INFO] [stdout]    |                                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_counts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "e572fc5bbbc72c197ab49a0921e95ccc15d1f96713766bd47c0a5333d774af19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e572fc5bbbc72c197ab49a0921e95ccc15d1f96713766bd47c0a5333d774af19", kill_on_drop: false }`
[INFO] [stdout] e572fc5bbbc72c197ab49a0921e95ccc15d1f96713766bd47c0a5333d774af19