[INFO] cloning repository https://github.com/janglada/yahtzee_upper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/janglada/yahtzee_upper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjanglada%2Fyahtzee_upper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjanglada%2Fyahtzee_upper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33b568d9913b7d6b84eefe3da256b6bf88be43e5
[INFO] checking janglada/yahtzee_upper against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjanglada%2Fyahtzee_upper" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/janglada/yahtzee_upper on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/janglada/yahtzee_upper
[INFO] finished tweaking git repo https://github.com/janglada/yahtzee_upper
[INFO] tweaked toml for git repo https://github.com/janglada/yahtzee_upper written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/janglada/yahtzee_upper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d009493bd3110f81ac26505a7066038fb5a153cff9730667f8c80973453fe8a
[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" "1d009493bd3110f81ac26505a7066038fb5a153cff9730667f8c80973453fe8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d009493bd3110f81ac26505a7066038fb5a153cff9730667f8c80973453fe8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d009493bd3110f81ac26505a7066038fb5a153cff9730667f8c80973453fe8a", kill_on_drop: false }`
[INFO] [stdout] 1d009493bd3110f81ac26505a7066038fb5a153cff9730667f8c80973453fe8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0eb17bbfac359d4b02a12813f39aeff70078c150bb857e07e3e4aed488bc0dd4
[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" "0eb17bbfac359d4b02a12813f39aeff70078c150bb857e07e3e4aed488bc0dd4", kill_on_drop: false }`
[INFO] [stderr]     Checking dailyprogrammer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::num::ParseIntError`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::num::ParseIntError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num::ParseIntError`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::num::ParseIntError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]   --> src/main.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let (elapsed, sum) = measure_time(|| {
[INFO] [stdout]    |                   ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]   --> src/main.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let (elapsed, sum) = measure_time(|| {
[INFO] [stdout]    |                   ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `counter` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let val = match counter.get(&num) {
[INFO] [stdout]    |                         ------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 36 |         counter.insert(num, val + num);
[INFO] [stdout]    |         ^^^^^^^             --- immutable borrow later used here
[INFO] [stdout]    |         |
[INFO] [stdout]    |         mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `counter` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let val = match counter.get(&num) {
[INFO] [stdout]    |                         ------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 36 |         counter.insert(num, val + num);
[INFO] [stdout]    |         ^^^^^^^             --- immutable borrow later used here
[INFO] [stdout]    |         |
[INFO] [stdout]    |         mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "0eb17bbfac359d4b02a12813f39aeff70078c150bb857e07e3e4aed488bc0dd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eb17bbfac359d4b02a12813f39aeff70078c150bb857e07e3e4aed488bc0dd4", kill_on_drop: false }`
[INFO] [stdout] 0eb17bbfac359d4b02a12813f39aeff70078c150bb857e07e3e4aed488bc0dd4