[INFO] fetching crate ringhopper 0.1.3...
[INFO] checking ringhopper-0.1.3 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate ringhopper 0.1.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate ringhopper 0.1.3 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 41 packages to latest compatible versions
[INFO] [stderr]       Adding jpeg-decoder v0.2.6 (latest: v0.3.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] [stderr]       Adding tiff v0.7.4 (latest: v0.9.1)
[INFO] [stderr]       Adding windows v0.43.0 (latest: v0.58.0)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.42.2 (latest: v0.52.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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]  Downloading crates ...
[INFO] [stderr]   Downloaded rat-in-a-tube-definitions v0.2.3
[INFO] [stderr]   Downloaded rat-in-a-tube v0.2.3
[INFO] [stderr]   Downloaded ringhopper-proc v0.1.3
[INFO] [stderr]   Downloaded tiff v0.7.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbc4b3d44eea09042c6044a6b19aca66a2290cc0929b820ddba59082ccd333a0
[INFO] running `Command { std: "docker" "start" "-a" "cbc4b3d44eea09042c6044a6b19aca66a2290cc0929b820ddba59082ccd333a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbc4b3d44eea09042c6044a6b19aca66a2290cc0929b820ddba59082ccd333a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbc4b3d44eea09042c6044a6b19aca66a2290cc0929b820ddba59082ccd333a0", kill_on_drop: false }`
[INFO] [stdout] cbc4b3d44eea09042c6044a6b19aca66a2290cc0929b820ddba59082ccd333a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63b717137c1074dabc8a08fe69e84605eecc53973836ea6397cab391e26da12d
[INFO] running `Command { std: "docker" "start" "-a" "63b717137c1074dabc8a08fe69e84605eecc53973836ea6397cab391e26da12d", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling serde_json v1.0.127
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]     Checking weezl v0.1.8
[INFO] [stderr]     Checking jpeg-decoder v0.2.6
[INFO] [stderr]     Checking crc32fast v1.4.2
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking flate2 v1.0.33
[INFO] [stderr]     Checking texpresso v2.0.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking tiff v0.7.4
[INFO] [stderr]    Compiling serde_derive v1.0.209
[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 20.61s
[INFO] running `Command { std: "docker" "inspect" "63b717137c1074dabc8a08fe69e84605eecc53973836ea6397cab391e26da12d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63b717137c1074dabc8a08fe69e84605eecc53973836ea6397cab391e26da12d", kill_on_drop: false }`
[INFO] [stdout] 63b717137c1074dabc8a08fe69e84605eecc53973836ea6397cab391e26da12d