[INFO] fetching crate symphonia-format-mkv 0.5.4...
[INFO] building symphonia-format-mkv-0.5.4 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate symphonia-format-mkv 0.5.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate symphonia-format-mkv 0.5.4
[INFO] finished tweaking crates.io crate symphonia-format-mkv 0.5.4
[INFO] tweaked toml for crates.io crate symphonia-format-mkv 0.5.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate symphonia-format-mkv 0.5.4 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f654ccb45c3d4a985a0557827dcfe2176489bce6b3b87c16b3564f2d00f2951d
[INFO] running `Command { std: "docker" "start" "-a" "f654ccb45c3d4a985a0557827dcfe2176489bce6b3b87c16b3564f2d00f2951d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f654ccb45c3d4a985a0557827dcfe2176489bce6b3b87c16b3564f2d00f2951d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f654ccb45c3d4a985a0557827dcfe2176489bce6b3b87c16b3564f2d00f2951d", kill_on_drop: false }`
[INFO] [stdout] f654ccb45c3d4a985a0557827dcfe2176489bce6b3b87c16b3564f2d00f2951d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c420ed18b7a49acb09bff5ab05aae87d48092e79d3e8657f4d0921678f2b1dd
[INFO] running `Command { std: "docker" "start" "-a" "7c420ed18b7a49acb09bff5ab05aae87d48092e79d3e8657f4d0921678f2b1dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling symphonia-core v0.5.4
[INFO] [stderr]    Compiling encoding_rs v0.8.35
[INFO] [stderr]    Compiling symphonia-metadata v0.5.4
[INFO] [stderr]    Compiling symphonia-utils-xiph v0.5.4
[INFO] [stderr]    Compiling symphonia-format-mkv v0.5.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/ebml.rs:518:15
[INFO] [stdout]     |
[INFO] [stdout] 518 |     SignedInt(i64),
[INFO] [stdout]     |     --------- ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ElementData` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 518 -     SignedInt(i64),
[INFO] [stdout] 518 +     SignedInt(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/ebml.rs:526:10
[INFO] [stdout]     |
[INFO] [stdout] 526 |     Date(i64),
[INFO] [stdout]     |     ---- ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ElementData` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 526 -     Date(i64),
[INFO] [stdout] 526 +     Date(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "7c420ed18b7a49acb09bff5ab05aae87d48092e79d3e8657f4d0921678f2b1dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c420ed18b7a49acb09bff5ab05aae87d48092e79d3e8657f4d0921678f2b1dd", kill_on_drop: false }`
[INFO] [stdout] 7c420ed18b7a49acb09bff5ab05aae87d48092e79d3e8657f4d0921678f2b1dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a8dbc72be1c1e35795a23d16ffab31d7a22ea9ca3d60a2361e37362a080db5a
[INFO] running `Command { std: "docker" "start" "-a" "8a8dbc72be1c1e35795a23d16ffab31d7a22ea9ca3d60a2361e37362a080db5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling symphonia-format-mkv v0.5.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/ebml.rs:518:15
[INFO] [stdout]     |
[INFO] [stdout] 518 |     SignedInt(i64),
[INFO] [stdout]     |     --------- ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ElementData` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 518 -     SignedInt(i64),
[INFO] [stdout] 518 +     SignedInt(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/ebml.rs:526:10
[INFO] [stdout]     |
[INFO] [stdout] 526 |     Date(i64),
[INFO] [stdout]     |     ---- ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ElementData` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 526 -     Date(i64),
[INFO] [stdout] 526 +     Date(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/ebml.rs:518:15
[INFO] [stdout]     |
[INFO] [stdout] 518 |     SignedInt(i64),
[INFO] [stdout]     |     --------- ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ElementData` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 518 -     SignedInt(i64),
[INFO] [stdout] 518 +     SignedInt(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/ebml.rs:526:10
[INFO] [stdout]     |
[INFO] [stdout] 526 |     Date(i64),
[INFO] [stdout]     |     ---- ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ElementData` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 526 -     Date(i64),
[INFO] [stdout] 526 +     Date(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "8a8dbc72be1c1e35795a23d16ffab31d7a22ea9ca3d60a2361e37362a080db5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a8dbc72be1c1e35795a23d16ffab31d7a22ea9ca3d60a2361e37362a080db5a", kill_on_drop: false }`
[INFO] [stdout] 8a8dbc72be1c1e35795a23d16ffab31d7a22ea9ca3d60a2361e37362a080db5a
