[INFO] fetching crate ringhopper 0.1.3...
[INFO] checking ringhopper-0.1.3 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate ringhopper 0.1.3 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate ringhopper 0.1.3 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ringhopper 0.1.3
[INFO] finished tweaking crates.io crate ringhopper 0.1.3
[INFO] tweaked toml for crates.io crate ringhopper 0.1.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 40 packages to latest compatible versions
[INFO] [stderr]       Adding jpeg-decoder v0.2.6 (available: v0.3.1)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[INFO] [stderr]       Adding tiff v0.7.4 (available: v0.9.1)
[INFO] [stderr]       Adding windows v0.43.0 (available: v0.58.0)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.42.2 (available: v0.52.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fdba51c4a1cb77ae3cc0bfd6d82095ec86d05cf2a6ece7e9cefb9595a9d7b6f
[INFO] running `Command { std: "docker" "start" "-a" "5fdba51c4a1cb77ae3cc0bfd6d82095ec86d05cf2a6ece7e9cefb9595a9d7b6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fdba51c4a1cb77ae3cc0bfd6d82095ec86d05cf2a6ece7e9cefb9595a9d7b6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fdba51c4a1cb77ae3cc0bfd6d82095ec86d05cf2a6ece7e9cefb9595a9d7b6f", kill_on_drop: false }`
[INFO] [stdout] 5fdba51c4a1cb77ae3cc0bfd6d82095ec86d05cf2a6ece7e9cefb9595a9d7b6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c73490f5a5a3b8cd7d50b2498d549a1f886d03286f28a0b5eaa42d7b78eb0ea
[INFO] running `Command { std: "docker" "start" "-a" "0c73490f5a5a3b8cd7d50b2498d549a1f886d03286f28a0b5eaa42d7b78eb0ea", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]     Checking jpeg-decoder v0.2.6
[INFO] [stderr]     Checking weezl v0.1.8
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking crc32fast v1.4.2
[INFO] [stderr]     Checking texpresso v2.0.1
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking flate2 v1.0.34
[INFO] [stderr]     Checking tiff v0.7.4
[INFO] [stderr]    Compiling rat-in-a-tube-definitions v0.2.3
[INFO] [stderr]    Compiling ringhopper-proc v0.1.3
[INFO] [stderr]     Checking rat-in-a-tube v0.2.3
[INFO] [stderr]     Checking ringhopper v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/types/tag/tests.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let mut vector_level_1_0 = match value_level_1_0.get_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: variable does not need to be mutable
[INFO] [stdout]    --> src/types/tag/tests.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |     let mut vector_level_1_1 = match block_level_1_1.field_at_index_mut(0).field {
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/types/tag/tests.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |     let mut vector_level_2_0 = match value_level_2_0.get_value() {
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.14s
[INFO] running `Command { std: "docker" "inspect" "0c73490f5a5a3b8cd7d50b2498d549a1f886d03286f28a0b5eaa42d7b78eb0ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c73490f5a5a3b8cd7d50b2498d549a1f886d03286f28a0b5eaa42d7b78eb0ea", kill_on_drop: false }`
[INFO] [stdout] 0c73490f5a5a3b8cd7d50b2498d549a1f886d03286f28a0b5eaa42d7b78eb0ea