[INFO] fetching crate twiggy-parser 0.7.0...
[INFO] checking twiggy-parser-0.7.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate twiggy-parser 0.7.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate twiggy-parser 0.7.0 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 twiggy-parser 0.7.0
[INFO] finished tweaking crates.io crate twiggy-parser 0.7.0
[INFO] tweaked toml for crates.io crate twiggy-parser 0.7.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 56 packages
[INFO] [stderr]       Adding cpp_demangle v0.3.5 (latest: v0.4.3)
[INFO] [stderr]       Adding fallible-iterator v0.2.0 (latest: v0.3.0)
[INFO] [stderr]       Adding fixedbitset v0.4.2 (latest: v0.5.6)
[INFO] [stderr]       Adding gimli v0.25.0 (latest: v0.28.1)
[INFO] [stderr]       Adding goblin v0.1.3 (latest: v0.8.0)
[INFO] [stderr]       Adding object v0.17.0 (latest: v0.34.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding parity-wasm v0.41.0 (latest: v0.45.0)
[INFO] [stderr]       Adding scroll v0.10.2 (latest: v0.12.0)
[INFO] [stderr]       Adding scroll_derive v0.10.5 (latest: v0.12.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding target-lexicon v0.10.0 (latest: v0.12.14)
[INFO] [stderr]       Adding uuid v0.8.2 (latest: v1.8.0)
[INFO] [stderr]       Adding wasmparser v0.35.3 (latest: v0.202.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded frozen v1.0.0
[INFO] [stderr]   Downloaded target-lexicon v0.10.0
[INFO] [stderr]   Downloaded twiggy-ir v0.7.0
[INFO] [stderr]   Downloaded twiggy-traits v0.7.0
[INFO] [stderr]   Downloaded goblin v0.1.3
[INFO] [stderr]   Downloaded object v0.17.0
[INFO] [stderr]   Downloaded wasmparser v0.35.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] d167d3ec855ddde08fea7574bcfb8ef7209e5c8a3bbf6a0df92791b82a5d1901
[INFO] running `Command { std: "docker" "start" "-a" "d167d3ec855ddde08fea7574bcfb8ef7209e5c8a3bbf6a0df92791b82a5d1901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d167d3ec855ddde08fea7574bcfb8ef7209e5c8a3bbf6a0df92791b82a5d1901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d167d3ec855ddde08fea7574bcfb8ef7209e5c8a3bbf6a0df92791b82a5d1901", kill_on_drop: false }`
[INFO] [stdout] d167d3ec855ddde08fea7574bcfb8ef7209e5c8a3bbf6a0df92791b82a5d1901
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 51cfce0c5211a66df2fc997e26a11a5fd00ca7dc8a4887453959c86a862e7a55
[INFO] running `Command { std: "docker" "start" "-a" "51cfce0c5211a66df2fc997e26a11a5fd00ca7dc8a4887453959c86a862e7a55", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]    Compiling cpp_demangle v0.3.5
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking frozen v1.0.0
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking wasmparser v0.35.3
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking typed-arena v2.0.2
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking scroll v0.10.2
[INFO] [stderr]     Checking goblin v0.1.3
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking twiggy-ir v0.7.0
[INFO] [stderr]     Checking object v0.17.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking twiggy-traits v0.7.0
[INFO] [stderr]     Checking twiggy-parser v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `gimli` is imported redundantly
[INFO] [stdout]  --> object_parse/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use gimli;
[INFO] [stdout]   |     ^^^^^ the item `gimli` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `object` is imported redundantly
[INFO] [stdout]  --> object_parse/mod.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use object::{self, Object};
[INFO] [stdout]   |              ^^^^ the item `object` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gimli` is imported redundantly
[INFO] [stdout]  --> object_parse/compilation_unit_parse/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use gimli;
[INFO] [stdout]   |     ^^^^^ the item `gimli` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gimli` is imported redundantly
[INFO] [stdout]  --> object_parse/die_parse/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use gimli;
[INFO] [stdout]   |     ^^^^^ the item `gimli` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gimli` is imported redundantly
[INFO] [stdout]  --> object_parse/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use gimli;
[INFO] [stdout]   |     ^^^^^ the item `gimli` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gimli` is imported redundantly
[INFO] [stdout]  --> object_parse/die_parse/item_name.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use gimli;
[INFO] [stdout]   |     ^^^^^ the item `gimli` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gimli` is imported redundantly
[INFO] [stdout]  --> object_parse/die_parse/location_attrs.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use gimli;
[INFO] [stdout]   |     ^^^^^ the item `gimli` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `wasmparser` is imported redundantly
[INFO] [stdout]  --> wasm_parse/mod.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use wasmparser::{self, Operator, SectionReader, Type};
[INFO] [stdout]   |                  ^^^^ the item `wasmparser` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `object` is imported redundantly
[INFO] [stdout]  --> object_parse/mod.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use object::{self, Object};
[INFO] [stdout]   |              ^^^^ the item `object` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gimli` is imported redundantly
[INFO] [stdout]  --> object_parse/compilation_unit_parse/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use gimli;
[INFO] [stdout]   |     ^^^^^ the item `gimli` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gimli` is imported redundantly
[INFO] [stdout]  --> object_parse/die_parse/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use gimli;
[INFO] [stdout]   |     ^^^^^ the item `gimli` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gimli` is imported redundantly
[INFO] [stdout]  --> object_parse/die_parse/item_name.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use gimli;
[INFO] [stdout]   |     ^^^^^ the item `gimli` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gimli` is imported redundantly
[INFO] [stdout]  --> object_parse/die_parse/location_attrs.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use gimli;
[INFO] [stdout]   |     ^^^^^ the item `gimli` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `wasmparser` is imported redundantly
[INFO] [stdout]  --> wasm_parse/mod.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use wasmparser::{self, Operator, SectionReader, Type};
[INFO] [stdout]   |                  ^^^^ the item `wasmparser` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `Command { std: "docker" "inspect" "51cfce0c5211a66df2fc997e26a11a5fd00ca7dc8a4887453959c86a862e7a55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51cfce0c5211a66df2fc997e26a11a5fd00ca7dc8a4887453959c86a862e7a55", kill_on_drop: false }`
[INFO] [stdout] 51cfce0c5211a66df2fc997e26a11a5fd00ca7dc8a4887453959c86a862e7a55