[INFO] fetching crate asset_structure 0.1.2...
[INFO] checking asset_structure-0.1.2 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate asset_structure 0.1.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate asset_structure 0.1.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate asset_structure 0.1.2
[INFO] tweaked toml for crates.io crate asset_structure 0.1.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate asset_structure 0.1.2 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate asset_structure 0.1.2 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66405db6752dbf7d45c80a4a6724463a195ed6dfa7588c958a3f76a3c06a7053
[INFO] running `Command { std: "docker" "start" "-a" "66405db6752dbf7d45c80a4a6724463a195ed6dfa7588c958a3f76a3c06a7053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66405db6752dbf7d45c80a4a6724463a195ed6dfa7588c958a3f76a3c06a7053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66405db6752dbf7d45c80a4a6724463a195ed6dfa7588c958a3f76a3c06a7053", kill_on_drop: false }`
[INFO] [stdout] 66405db6752dbf7d45c80a4a6724463a195ed6dfa7588c958a3f76a3c06a7053
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b3c8b2acdaee7bc655f420508c06221d45eb9e23a84528bbbd914411b658b34
[INFO] running `Command { std: "docker" "start" "-a" "9b3c8b2acdaee7bc655f420508c06221d45eb9e23a84528bbbd914411b658b34", kill_on_drop: false }`
[INFO] [stderr]     Checking asset_structure v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `dir` is never read
[INFO] [stdout]   --> src/lib.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub struct AssetBranch {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 64 |     path: Box<Path>,
[INFO] [stdout] 65 |     dir: Option<Dir>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `msg` and `kind` are never read
[INFO] [stdout]    --> src/lib.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub struct Error {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 115 |     msg: Box<str>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 116 |     kind: ErrorKind,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `dir` is never read
[INFO] [stdout]   --> src/lib.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub struct AssetBranch {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 64 |     path: Box<Path>,
[INFO] [stdout] 65 |     dir: Option<Dir>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `msg` and `kind` are never read
[INFO] [stdout]    --> src/lib.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub struct Error {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 115 |     msg: Box<str>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 116 |     kind: ErrorKind,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "9b3c8b2acdaee7bc655f420508c06221d45eb9e23a84528bbbd914411b658b34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b3c8b2acdaee7bc655f420508c06221d45eb9e23a84528bbbd914411b658b34", kill_on_drop: false }`
[INFO] [stdout] 9b3c8b2acdaee7bc655f420508c06221d45eb9e23a84528bbbd914411b658b34