[INFO] fetching crate cranelift-faerie 0.66.0...
[INFO] checking cranelift-faerie-0.66.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate cranelift-faerie 0.66.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate cranelift-faerie 0.66.0 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 cranelift-faerie 0.66.0
[INFO] finished tweaking crates.io crate cranelift-faerie 0.66.0
[INFO] tweaked toml for crates.io crate cranelift-faerie 0.66.0 written to /workspace/builds/worker-3-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages
[INFO] [stderr]       Adding cranelift-bforest v0.66.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-codegen v0.66.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-codegen-meta v0.66.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-codegen-shared v0.66.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-entity v0.66.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-module v0.66.0 (latest: v0.106.1)
[INFO] [stderr]       Adding faerie v0.15.0 (latest: v0.16.0)
[INFO] [stderr]       Adding goblin v0.1.3 (latest: v0.8.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding regalloc v0.0.27 (latest: v0.0.34)
[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 string-interner v0.7.1 (latest: v0.15.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding target-lexicon v0.10.0 (latest: v0.12.14)
[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 target-lexicon v0.10.0
[INFO] [stderr]   Downloaded cranelift-module v0.66.0
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.66.0
[INFO] [stderr]   Downloaded cranelift-entity v0.66.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.66.0
[INFO] [stderr]   Downloaded regalloc v0.0.27
[INFO] [stderr]   Downloaded faerie v0.15.0
[INFO] [stderr]   Downloaded string-interner v0.7.1
[INFO] [stderr]   Downloaded goblin v0.1.3
[INFO] [stderr]   Downloaded cranelift-codegen v0.66.0
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.66.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b91ece7e973c9db33f18004b237858c9f4a8486e3dda4ade65d85bfa195777a2
[INFO] running `Command { std: "docker" "start" "-a" "b91ece7e973c9db33f18004b237858c9f4a8486e3dda4ade65d85bfa195777a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b91ece7e973c9db33f18004b237858c9f4a8486e3dda4ade65d85bfa195777a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b91ece7e973c9db33f18004b237858c9f4a8486e3dda4ade65d85bfa195777a2", kill_on_drop: false }`
[INFO] [stdout] b91ece7e973c9db33f18004b237858c9f4a8486e3dda4ade65d85bfa195777a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 5a3f10d0d3c828eb759e90a48dfc43a72d17fd7d6c34574f67864db0c0c5216d
[INFO] running `Command { std: "docker" "start" "-a" "5a3f10d0d3c828eb759e90a48dfc43a72d17fd7d6c34574f67864db0c0c5216d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.66.0
[INFO] [stderr]    Compiling cranelift-entity v0.66.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking regalloc v0.0.27
[INFO] [stderr]     Checking string-interner v0.7.1
[INFO] [stderr]     Checking cranelift-bforest v0.66.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.66.0
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]     Checking scroll v0.10.2
[INFO] [stderr]     Checking goblin v0.1.3
[INFO] [stderr]    Compiling cranelift-codegen v0.66.0
[INFO] [stderr]     Checking faerie v0.15.0
[INFO] [stderr]     Checking cranelift-module v0.66.0
[INFO] [stderr]     Checking cranelift-faerie v0.66.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `cranelift_codegen` is imported redundantly
[INFO] [stdout]  --> src/backend.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 | use cranelift_codegen::{self, binemit, ir};
[INFO] [stdout]   |                         ^^^^ the item `cranelift_codegen` 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 `cranelift_codegen` is imported redundantly
[INFO] [stdout]  --> src/backend.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 | use cranelift_codegen::{self, binemit, ir};
[INFO] [stdout]   |                         ^^^^ the item `cranelift_codegen` 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 `faerie` is imported redundantly
[INFO] [stdout]   --> src/backend.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use faerie;
[INFO] [stdout]    |     ^^^^^^ the item `faerie` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `faerie` is imported redundantly
[INFO] [stdout]   --> src/backend.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use faerie;
[INFO] [stdout]    |     ^^^^^^ the item `faerie` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.51s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cranelift-codegen-meta v0.66.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "5a3f10d0d3c828eb759e90a48dfc43a72d17fd7d6c34574f67864db0c0c5216d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a3f10d0d3c828eb759e90a48dfc43a72d17fd7d6c34574f67864db0c0c5216d", kill_on_drop: false }`
[INFO] [stdout] 5a3f10d0d3c828eb759e90a48dfc43a72d17fd7d6c34574f67864db0c0c5216d