[INFO] fetching crate shard-ecs 0.2.7...
[INFO] checking shard-ecs-0.2.7 against master#f167efad2f51088d86180ee89177b3d7c9e7c2f5 for pr-129543
[INFO] extracting crate shard-ecs 0.2.7 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate shard-ecs 0.2.7 on toolchain f167efad2f51088d86180ee89177b3d7c9e7c2f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "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-3-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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.47
[INFO] [stderr]   Downloaded shard_ecs_derive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b39187738d26180aec59f496994c0dd8cb05bcbbb6f25b7f3bd04371cca8ca0
[INFO] running `Command { std: "docker" "start" "-a" "9b39187738d26180aec59f496994c0dd8cb05bcbbb6f25b7f3bd04371cca8ca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b39187738d26180aec59f496994c0dd8cb05bcbbb6f25b7f3bd04371cca8ca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b39187738d26180aec59f496994c0dd8cb05bcbbb6f25b7f3bd04371cca8ca0", kill_on_drop: false }`
[INFO] [stdout] 9b39187738d26180aec59f496994c0dd8cb05bcbbb6f25b7f3bd04371cca8ca0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee398d2d2a2ca8bec5b32fc84ef66b5937e737777b98aae8811ec97ab6a23a0d
[INFO] running `Command { std: "docker" "start" "-a" "ee398d2d2a2ca8bec5b32fc84ef66b5937e737777b98aae8811ec97ab6a23a0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking 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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.31s
[INFO] running `Command { std: "docker" "inspect" "ee398d2d2a2ca8bec5b32fc84ef66b5937e737777b98aae8811ec97ab6a23a0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee398d2d2a2ca8bec5b32fc84ef66b5937e737777b98aae8811ec97ab6a23a0d", kill_on_drop: false }`
[INFO] [stdout] ee398d2d2a2ca8bec5b32fc84ef66b5937e737777b98aae8811ec97ab6a23a0d