[INFO] fetching crate pepper 0.31.0...
[INFO] checking pepper-0.31.0 against master#158f00a1c5175648af6f6099b075f78d1d014a28 for pr-121251
[INFO] extracting crate pepper 0.31.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate pepper 0.31.0 on toolchain 158f00a1c5175648af6f6099b075f78d1d014a28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pepper 0.31.0
[INFO] finished tweaking crates.io crate pepper 0.31.0
[INFO] tweaked toml for crates.io crate pepper 0.31.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate pepper 0.31.0 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" "+158f00a1c5175648af6f6099b075f78d1d014a28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9cec712f6ac6cb2fa79b922ae7cd2f190399e404804e610eabb6e0fda804da9
[INFO] running `Command { std: "docker" "start" "-a" "f9cec712f6ac6cb2fa79b922ae7cd2f190399e404804e610eabb6e0fda804da9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9cec712f6ac6cb2fa79b922ae7cd2f190399e404804e610eabb6e0fda804da9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9cec712f6ac6cb2fa79b922ae7cd2f190399e404804e610eabb6e0fda804da9", kill_on_drop: false }`
[INFO] [stdout] f9cec712f6ac6cb2fa79b922ae7cd2f190399e404804e610eabb6e0fda804da9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8bb2795586d5fb2ac11535c59034dcb80f8eb4b8d6823c29ba8c03e0fce7476
[INFO] running `Command { std: "docker" "start" "-a" "d8bb2795586d5fb2ac11535c59034dcb80f8eb4b8d6823c29ba8c03e0fce7476", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking pepper v0.31.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/events.rs:201:17
[INFO] [stdout]     |
[INFO] [stdout] 201 |                 std::mem::drop(range_deletes);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^-------------^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                argument has type `&mut BufferRangeDeletesMutGuard<'_>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/events.rs:220:17
[INFO] [stdout]     |
[INFO] [stdout] 220 |                 std::mem::drop(text_inserts);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^------------^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                argument has type `&mut BufferTextInsertsMutGuard<'_>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/events.rs:201:17
[INFO] [stdout]     |
[INFO] [stdout] 201 |                 std::mem::drop(range_deletes);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^-------------^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                argument has type `&mut BufferRangeDeletesMutGuard<'_>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/events.rs:220:17
[INFO] [stdout]     |
[INFO] [stdout] 220 |                 std::mem::drop(text_inserts);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^------------^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                argument has type `&mut BufferTextInsertsMutGuard<'_>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `Command { std: "docker" "inspect" "d8bb2795586d5fb2ac11535c59034dcb80f8eb4b8d6823c29ba8c03e0fce7476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8bb2795586d5fb2ac11535c59034dcb80f8eb4b8d6823c29ba8c03e0fce7476", kill_on_drop: false }`
[INFO] [stdout] d8bb2795586d5fb2ac11535c59034dcb80f8eb4b8d6823c29ba8c03e0fce7476
