[INFO] fetching crate shard-ecs 0.2.7...
[INFO] building shard-ecs-0.2.7 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate shard-ecs 0.2.7 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate shard-ecs 0.2.7 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shard-ecs 0.2.7
[INFO] finished tweaking crates.io crate shard-ecs 0.2.7
[INFO] tweaked toml for crates.io crate shard-ecs 0.2.7 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate shard-ecs 0.2.7 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shard_ecs_derive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1878699fde6fb3bdb0c31ff5bcba692eadb31e8e0422cc5e2b936e2b73a0e8c
[INFO] running `Command { std: "docker" "start" "-a" "b1878699fde6fb3bdb0c31ff5bcba692eadb31e8e0422cc5e2b936e2b73a0e8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1878699fde6fb3bdb0c31ff5bcba692eadb31e8e0422cc5e2b936e2b73a0e8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1878699fde6fb3bdb0c31ff5bcba692eadb31e8e0422cc5e2b936e2b73a0e8c", kill_on_drop: false }`
[INFO] [stdout] b1878699fde6fb3bdb0c31ff5bcba692eadb31e8e0422cc5e2b936e2b73a0e8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9541e7c74be7a7d18baaedd27d68464f3a6561c1f3ddaef446eb0bf0b77693c2
[INFO] running `Command { std: "docker" "start" "-a" "9541e7c74be7a7d18baaedd27d68464f3a6561c1f3ddaef446eb0bf0b77693c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling shard-ecs v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/entity_registry/mod.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let (entity, mut entry) = if self.next_free_slot == IndexInArchetype::INVALID_VALUE {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "9541e7c74be7a7d18baaedd27d68464f3a6561c1f3ddaef446eb0bf0b77693c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9541e7c74be7a7d18baaedd27d68464f3a6561c1f3ddaef446eb0bf0b77693c2", kill_on_drop: false }`
[INFO] [stdout] 9541e7c74be7a7d18baaedd27d68464f3a6561c1f3ddaef446eb0bf0b77693c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99ffd4253bbe1a9655a9bd80d8ef425b71af8b3acb5efbe3afdd7bb439f0baac
[INFO] running `Command { std: "docker" "start" "-a" "99ffd4253bbe1a9655a9bd80d8ef425b71af8b3acb5efbe3afdd7bb439f0baac", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/entity_registry/mod.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let (entity, mut entry) = if self.next_free_slot == IndexInArchetype::INVALID_VALUE {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling shard-ecs v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/entity_registry/mod.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let (entity, mut entry) = if self.next_free_slot == IndexInArchetype::INVALID_VALUE {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.81s
[INFO] running `Command { std: "docker" "inspect" "99ffd4253bbe1a9655a9bd80d8ef425b71af8b3acb5efbe3afdd7bb439f0baac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99ffd4253bbe1a9655a9bd80d8ef425b71af8b3acb5efbe3afdd7bb439f0baac", kill_on_drop: false }`
[INFO] [stdout] 99ffd4253bbe1a9655a9bd80d8ef425b71af8b3acb5efbe3afdd7bb439f0baac