[INFO] fetching crate ggstd 0.1.0...
[INFO] checking ggstd-0.1.0 against master#f167efad2f51088d86180ee89177b3d7c9e7c2f5 for pr-129543
[INFO] extracting crate ggstd 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate ggstd 0.1.0 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 ggstd 0.1.0
[INFO] finished tweaking crates.io crate ggstd 0.1.0
[INFO] tweaked toml for crates.io crate ggstd 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate ggstd 0.1.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 97812bed0de468b88e76a2ace5f1d39c055f6a2f03357ee6e1e3cc315564f548
[INFO] running `Command { std: "docker" "start" "-a" "97812bed0de468b88e76a2ace5f1d39c055f6a2f03357ee6e1e3cc315564f548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97812bed0de468b88e76a2ace5f1d39c055f6a2f03357ee6e1e3cc315564f548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97812bed0de468b88e76a2ace5f1d39c055f6a2f03357ee6e1e3cc315564f548", kill_on_drop: false }`
[INFO] [stdout] 97812bed0de468b88e76a2ace5f1d39c055f6a2f03357ee6e1e3cc315564f548
[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] 590155377d9ed0c10e768682a4033db41ceb1d10c2ad0caa3458ffcc4cd32e8a
[INFO] running `Command { std: "docker" "start" "-a" "590155377d9ed0c10e768682a4033db41ceb1d10c2ad0caa3458ffcc4cd32e8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ggstd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `latin_offset` is never read
[INFO] [stdout]   --> src/unicode/letter.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct RangeTable {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub latin_offset: isize, // number of entries in R16 with Hi <= MaxLatin1
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SparseReader` is never constructed
[INFO] [stdout]    --> src/compress/flate/deflate_test.rs:257:8
[INFO] [stdout]     |
[INFO] [stdout] 257 | struct SparseReader {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `latin_offset` is never read
[INFO] [stdout]   --> src/unicode/letter.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct RangeTable {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub latin_offset: isize, // number of entries in R16 with Hi <= MaxLatin1
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.58s
[INFO] running `Command { std: "docker" "inspect" "590155377d9ed0c10e768682a4033db41ceb1d10c2ad0caa3458ffcc4cd32e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "590155377d9ed0c10e768682a4033db41ceb1d10c2ad0caa3458ffcc4cd32e8a", kill_on_drop: false }`
[INFO] [stdout] 590155377d9ed0c10e768682a4033db41ceb1d10c2ad0caa3458ffcc4cd32e8a