[INFO] cloning repository https://github.com/Dave98-dev/BukkeScript
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dave98-dev/BukkeScript" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDave98-dev%2FBukkeScript", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDave98-dev%2FBukkeScript'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bfaf8111893f87632fba6e95848be7abc3fe80dc
[INFO] checking Dave98-dev/BukkeScript against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDave98-dev%2FBukkeScript" "/workspace/builds/worker-103/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-103/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dave98-dev/BukkeScript on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Dave98-dev/BukkeScript
[INFO] finished tweaking git repo https://github.com/Dave98-dev/BukkeScript
[INFO] tweaked toml for git repo https://github.com/Dave98-dev/BukkeScript written to /workspace/builds/worker-103/source/Cargo.toml
[INFO] crate git repo https://github.com/Dave98-dev/BukkeScript already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "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-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3c080adb16309e5d3bd61fb09014b50c9d978ad916cc3d87d68892ea6913dd7
[INFO] running `Command { std: "docker" "start" "-a" "b3c080adb16309e5d3bd61fb09014b50c9d978ad916cc3d87d68892ea6913dd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3c080adb16309e5d3bd61fb09014b50c9d978ad916cc3d87d68892ea6913dd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3c080adb16309e5d3bd61fb09014b50c9d978ad916cc3d87d68892ea6913dd7", kill_on_drop: false }`
[INFO] [stdout] b3c080adb16309e5d3bd61fb09014b50c9d978ad916cc3d87d68892ea6913dd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d116da34a9ad3af8b71b37851a24a1591f6d1858ede2bbd9af569e92ee6bd8b4
[INFO] running `Command { std: "docker" "start" "-a" "d116da34a9ad3af8b71b37851a24a1591f6d1858ede2bbd9af569e92ee6bd8b4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking eval_string v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/scope_implementation.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             &self.jumps.entry(s).or_insert(line_number);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |             let _ = &self.jumps.entry(s).or_insert(line_number);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/scope_implementation.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |             &self.jumps.entry(s).or_insert(line_number);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |             let _ = &self.jumps.entry(s).or_insert(line_number);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.50s
[INFO] running `Command { std: "docker" "inspect" "d116da34a9ad3af8b71b37851a24a1591f6d1858ede2bbd9af569e92ee6bd8b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d116da34a9ad3af8b71b37851a24a1591f6d1858ede2bbd9af569e92ee6bd8b4", kill_on_drop: false }`
[INFO] [stdout] d116da34a9ad3af8b71b37851a24a1591f6d1858ede2bbd9af569e92ee6bd8b4