[INFO] fetching crate messloc 0.0.1...
[INFO] checking messloc-0.0.1 against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] extracting crate messloc 0.0.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate messloc 0.0.1 on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate messloc 0.0.1
[INFO] finished tweaking crates.io crate messloc 0.0.1
[INFO] tweaked toml for crates.io crate messloc 0.0.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate messloc 0.0.1 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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ddf9cef031f4e747df2031f9608937c07845527fcb7b28deb53e67607b98c4a4
[INFO] running `Command { std: "docker" "start" "-a" "ddf9cef031f4e747df2031f9608937c07845527fcb7b28deb53e67607b98c4a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddf9cef031f4e747df2031f9608937c07845527fcb7b28deb53e67607b98c4a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddf9cef031f4e747df2031f9608937c07845527fcb7b28deb53e67607b98c4a4", kill_on_drop: false }`
[INFO] [stdout] ddf9cef031f4e747df2031f9608937c07845527fcb7b28deb53e67607b98c4a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ece11c1dcb000b368b16b4eb864667fde2743cd36cdc834b3865de6efca4608c
[INFO] running `Command { std: "docker" "start" "-a" "ece11c1dcb000b368b16b4eb864667fde2743cd36cdc834b3865de6efca4608c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]     Checking memmap2 v0.5.8
[INFO] [stderr]     Checking messloc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: static `ALLOCATOR` is never used
[INFO] [stdout]  --> src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | static ALLOCATOR: MessyLock = MessyLock(once_cell::sync::OnceCell::new());
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Messloc::allocate` that must be used
[INFO] [stdout]   --> src/main.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 |         unsafe { allocator.allocate(std::alloc::Layout::from_size_align(48, 8).unwrap()) };
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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] 13 |         unsafe { let _ = allocator.allocate(std::alloc::Layout::from_size_align(48, 8).unwrap()); };
[INFO] [stdout]    |                  +++++++                                                                        +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Messloc::allocate` that must be used
[INFO] [stdout]   --> src/main.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 |         unsafe { allocator.allocate(std::alloc::Layout::from_size_align(1, 1).unwrap()) };
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |         unsafe { let _ = allocator.allocate(std::alloc::Layout::from_size_align(1, 1).unwrap()); };
[INFO] [stdout]    |                  +++++++                                                                       +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "ece11c1dcb000b368b16b4eb864667fde2743cd36cdc834b3865de6efca4608c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ece11c1dcb000b368b16b4eb864667fde2743cd36cdc834b3865de6efca4608c", kill_on_drop: false }`
[INFO] [stdout] ece11c1dcb000b368b16b4eb864667fde2743cd36cdc834b3865de6efca4608c
[INFO] checking messloc-0.0.1 against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] extracting crate messloc 0.0.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate messloc 0.0.1 on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate messloc 0.0.1
[INFO] finished tweaking crates.io crate messloc 0.0.1
[INFO] tweaked toml for crates.io crate messloc 0.0.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate messloc 0.0.1 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4e8ca7ed32b472a7a599960ad9cd5b32f6e458b5472583246196c6d13ef8dae
[INFO] running `Command { std: "docker" "start" "-a" "d4e8ca7ed32b472a7a599960ad9cd5b32f6e458b5472583246196c6d13ef8dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4e8ca7ed32b472a7a599960ad9cd5b32f6e458b5472583246196c6d13ef8dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4e8ca7ed32b472a7a599960ad9cd5b32f6e458b5472583246196c6d13ef8dae", kill_on_drop: false }`
[INFO] [stdout] d4e8ca7ed32b472a7a599960ad9cd5b32f6e458b5472583246196c6d13ef8dae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Ddereferencing_mut_binding" "-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" "+047472f299946caf090d1b5608ae4bd9f0416256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 343944a6af01364b926f06456dcaecc913c38d72bb9ac2d5619ae6162ecda4db
[INFO] running `Command { std: "docker" "start" "-a" "343944a6af01364b926f06456dcaecc913c38d72bb9ac2d5619ae6162ecda4db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]     Checking memmap2 v0.5.8
[INFO] [stderr]     Checking messloc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> src/global_heap.rs:632:33
[INFO] [stdout]     |
[INFO] [stdout] 632 |                 .scan((0, 0), |(mut count, mut found_count), i| {
[INFO] [stdout]     |                                 ^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> src/global_heap.rs:632:33
[INFO] [stdout]     |
[INFO] [stdout] 632 |                 .scan((0, 0), |(mut count, mut found_count), i| {
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     = note: requested on the command line with `-D dereferencing-mut-binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> src/global_heap.rs:632:44
[INFO] [stdout]     |
[INFO] [stdout] 632 |                 .scan((0, 0), |(mut count, mut found_count), i| {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> src/global_heap.rs:632:44
[INFO] [stdout]     |
[INFO] [stdout] 632 |                 .scan((0, 0), |(mut count, mut found_count), i| {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> src/global_heap.rs:632:33
[INFO] [stdout]     |
[INFO] [stdout] 632 |                 .scan((0, 0), |(mut count, mut found_count), i| {
[INFO] [stdout]     |                                 ^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> src/global_heap.rs:632:33
[INFO] [stdout]     |
[INFO] [stdout] 632 |                 .scan((0, 0), |(mut count, mut found_count), i| {
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     = note: requested on the command line with `-D dereferencing-mut-binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> src/global_heap.rs:632:44
[INFO] [stdout]     |
[INFO] [stdout] 632 |                 .scan((0, 0), |(mut count, mut found_count), i| {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> src/global_heap.rs:632:44
[INFO] [stdout]     |
[INFO] [stdout] 632 |                 .scan((0, 0), |(mut count, mut found_count), i| {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `messloc` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `messloc` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "343944a6af01364b926f06456dcaecc913c38d72bb9ac2d5619ae6162ecda4db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "343944a6af01364b926f06456dcaecc913c38d72bb9ac2d5619ae6162ecda4db", kill_on_drop: false }`
[INFO] [stdout] 343944a6af01364b926f06456dcaecc913c38d72bb9ac2d5619ae6162ecda4db