[INFO] fetching crate lelwel 0.4.2...
[INFO] checking lelwel-0.4.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate lelwel 0.4.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate lelwel 0.4.2 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lelwel 0.4.2
[INFO] finished tweaking crates.io crate lelwel 0.4.2
[INFO] tweaked toml for crates.io crate lelwel 0.4.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate lelwel 0.4.2 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.133
[INFO] [stderr]   Downloaded lsp-server v0.5.2
[INFO] [stderr]   Downloaded serde_json v1.0.74
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.6
[INFO] [stderr]   Downloaded lsp-types v0.91.1
[INFO] [stderr]   Downloaded clap v3.0.7
[INFO] [stderr]   Downloaded serde v1.0.133
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97f3b283de43452eb176bbfc2e378fd46e2fdd09400f6ab135448a2f5c90e97a
[INFO] running `Command { std: "docker" "start" "-a" "97f3b283de43452eb176bbfc2e378fd46e2fdd09400f6ab135448a2f5c90e97a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97f3b283de43452eb176bbfc2e378fd46e2fdd09400f6ab135448a2f5c90e97a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97f3b283de43452eb176bbfc2e378fd46e2fdd09400f6ab135448a2f5c90e97a", kill_on_drop: false }`
[INFO] [stdout] 97f3b283de43452eb176bbfc2e378fd46e2fdd09400f6ab135448a2f5c90e97a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ee2291a9ebf9776db9897811e678bf78b0f8fcc71daf41159aabb976ba85fdf
[INFO] running `Command { std: "docker" "start" "-a" "5ee2291a9ebf9776db9897811e678bf78b0f8fcc71daf41159aabb976ba85fdf", kill_on_drop: false }`
[INFO] [stderr]     Checking bumpalo v3.9.1
[INFO] [stderr]     Checking lelwel v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Bump` is imported redundantly
[INFO] [stdout]  --> src/frontend/ast/imp.rs:3:53
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `Bump` is already imported here
[INFO] [stdout] 3 | use bumpalo::{boxed::Box, collections::Vec as BVec, Bump};
[INFO] [stdout]   |                                                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Bump` is imported redundantly
[INFO] [stdout]  --> src/frontend/ast/imp.rs:3:53
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `Bump` is already imported here
[INFO] [stdout] 3 | use bumpalo::{boxed::Box, collections::Vec as BVec, Bump};
[INFO] [stdout]   |                                                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 0.99s
[INFO] running `Command { std: "docker" "inspect" "5ee2291a9ebf9776db9897811e678bf78b0f8fcc71daf41159aabb976ba85fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ee2291a9ebf9776db9897811e678bf78b0f8fcc71daf41159aabb976ba85fdf", kill_on_drop: false }`
[INFO] [stdout] 5ee2291a9ebf9776db9897811e678bf78b0f8fcc71daf41159aabb976ba85fdf