[INFO] fetching crate yolol-runner 0.2.2...
[INFO] checking yolol-runner-0.2.2 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate yolol-runner 0.2.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate yolol-runner 0.2.2 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yolol-runner 0.2.2
[INFO] finished tweaking crates.io crate yolol-runner 0.2.2
[INFO] tweaked toml for crates.io crate yolol-runner 0.2.2 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" "+38352b01ae4af9300be03b805d6db68c45e51068" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] [stderr]       Adding convert_case v0.4.0 (available: v0.6.0)
[INFO] [stderr]       Adding peg v0.7.0 (available: v0.8.4)
[INFO] [stderr]       Adding peg-macros v0.7.0 (available: v0.8.4)
[INFO] [stderr]       Adding peg-runtime v0.7.0 (available: v0.8.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yolol-devices v0.3.3
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57fb5862785c01571bb8f83e529d4eecba9c50bf87c058575107b467dde06c70
[INFO] running `Command { std: "docker" "start" "-a" "57fb5862785c01571bb8f83e529d4eecba9c50bf87c058575107b467dde06c70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57fb5862785c01571bb8f83e529d4eecba9c50bf87c058575107b467dde06c70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57fb5862785c01571bb8f83e529d4eecba9c50bf87c058575107b467dde06c70", kill_on_drop: false }`
[INFO] [stdout] 57fb5862785c01571bb8f83e529d4eecba9c50bf87c058575107b467dde06c70
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28c7a7a92649879d14c311af00071c97693d0367d2ebdb3948277e73a66c2c29
[INFO] running `Command { std: "docker" "start" "-a" "28c7a7a92649879d14c311af00071c97693d0367d2ebdb3948277e73a66c2c29", kill_on_drop: false }`
[INFO] [stderr]    Compiling peg-runtime v0.7.0
[INFO] [stderr]     Checking convert_case v0.4.0
[INFO] [stderr]    Compiling concat-idents v1.1.5
[INFO] [stderr]    Compiling enum_dispatch v0.3.13
[INFO] [stderr]    Compiling peg-macros v0.7.0
[INFO] [stderr]     Checking yolol-devices v0.3.3
[INFO] [stderr]     Checking peg v0.7.0
[INFO] [stderr]     Checking yolol-runner v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Empty` and `Error` are never constructed
[INFO] [stdout]  --> src/ast.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Tree {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 3 |     Empty,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     Error,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Tree` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Empty` and `Error` are never constructed
[INFO] [stdout]  --> src/ast.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Tree {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 3 |     Empty,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     Error,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Tree` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "28c7a7a92649879d14c311af00071c97693d0367d2ebdb3948277e73a66c2c29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28c7a7a92649879d14c311af00071c97693d0367d2ebdb3948277e73a66c2c29", kill_on_drop: false }`
[INFO] [stdout] 28c7a7a92649879d14c311af00071c97693d0367d2ebdb3948277e73a66c2c29