[INFO] fetching crate lightbeam 0.30.0...
[INFO] checking lightbeam-0.30.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate lightbeam 0.30.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate lightbeam 0.30.0 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 lightbeam 0.30.0
[INFO] finished tweaking crates.io crate lightbeam 0.30.0
[INFO] tweaked toml for crates.io crate lightbeam 0.30.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate lightbeam 0.30.0 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 more-asserts v0.2.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e38ae7935a8bd536bcdd22fe1c24072fda97e0d9a278756091ade25b7c88f220
[INFO] running `Command { std: "docker" "start" "-a" "e38ae7935a8bd536bcdd22fe1c24072fda97e0d9a278756091ade25b7c88f220", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e38ae7935a8bd536bcdd22fe1c24072fda97e0d9a278756091ade25b7c88f220", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e38ae7935a8bd536bcdd22fe1c24072fda97e0d9a278756091ade25b7c88f220", kill_on_drop: false }`
[INFO] [stdout] e38ae7935a8bd536bcdd22fe1c24072fda97e0d9a278756091ade25b7c88f220
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a046f8d274aef7964178e4ee1c7ace3d5e66ef06d9cfe7f476fc1951f874f6de
[INFO] running `Command { std: "docker" "start" "-a" "a046f8d274aef7964178e4ee1c7ace3d5e66ef06d9cfe7f476fc1951f874f6de", kill_on_drop: false }`
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[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling cranelift-entity v0.77.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.77.0
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling target-lexicon v0.12.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.77.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling capstone-sys v0.13.0
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking memmap2 v0.2.3
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[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling anyhow v1.0.44
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[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]     Checking wast v38.0.0
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[INFO] [stderr]     Checking more-asserts v0.2.1
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[INFO] [stderr]    Compiling iter-enum v1.0.1
[INFO] [stderr]    Compiling derive_more v0.99.16
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[INFO] [stdout] warning: fields `reg` and `imm` are never read
[INFO] [stdout]    --> src/backend.rs:680:5
[INFO] [stdout]     |
[INFO] [stdout] 679 | struct RelocateAddress {
[INFO] [stdout]     |        --------------- fields in this struct
[INFO] [stdout] 680 |     reg: Option<GPR>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 681 |     imm: usize,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RelocateAddress` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `position`, `dst_reg`, and `address` are never read
[INFO] [stdout]    --> src/backend.rs:686:5
[INFO] [stdout]     |
[INFO] [stdout] 685 | struct RelocateAccess {
[INFO] [stdout]     |        -------------- fields in this struct
[INFO] [stdout] 686 |     position: AssemblyOffset,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 687 |     dst_reg: GPR,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 688 |     address: RelocateAddress,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RelocateAccess` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RetLabel` is never constructed
[INFO] [stdout]     --> src/backend.rs:6113:16
[INFO] [stdout]      |
[INFO] [stdout] 6113 |         struct RetLabel;
[INFO] [stdout]      |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnimplementedRelocSink` is never constructed
[INFO] [stdout]   --> src/translate_sections.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | struct UnimplementedRelocSink;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `reg` and `imm` are never read
[INFO] [stdout]    --> src/backend.rs:680:5
[INFO] [stdout]     |
[INFO] [stdout] 679 | struct RelocateAddress {
[INFO] [stdout]     |        --------------- fields in this struct
[INFO] [stdout] 680 |     reg: Option<GPR>,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 681 |     imm: usize,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RelocateAddress` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `position`, `dst_reg`, and `address` are never read
[INFO] [stdout]    --> src/backend.rs:686:5
[INFO] [stdout]     |
[INFO] [stdout] 685 | struct RelocateAccess {
[INFO] [stdout]     |        -------------- fields in this struct
[INFO] [stdout] 686 |     position: AssemblyOffset,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 687 |     dst_reg: GPR,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 688 |     address: RelocateAddress,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RelocateAccess` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RetLabel` is never constructed
[INFO] [stdout]     --> src/backend.rs:6113:16
[INFO] [stdout]      |
[INFO] [stdout] 6113 |         struct RetLabel;
[INFO] [stdout]      |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnimplementedRelocSink` is never constructed
[INFO] [stdout]   --> src/translate_sections.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | struct UnimplementedRelocSink;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.16s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "a046f8d274aef7964178e4ee1c7ace3d5e66ef06d9cfe7f476fc1951f874f6de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a046f8d274aef7964178e4ee1c7ace3d5e66ef06d9cfe7f476fc1951f874f6de", kill_on_drop: false }`
[INFO] [stdout] a046f8d274aef7964178e4ee1c7ace3d5e66ef06d9cfe7f476fc1951f874f6de