[INFO] fetching crate lightbeam 0.30.0...
[INFO] checking lightbeam-0.30.0 against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] extracting crate lightbeam 0.30.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate lightbeam 0.30.0 on toolchain b286722878e18db29a7fbe672be7c4d3b02e8e4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "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-7-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" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasmparser v0.80.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e4747a60dba02edfa973902068db1cb033b531c3d90d3b8ce9f6f11a5aa62ff
[INFO] running `Command { std: "docker" "start" "-a" "1e4747a60dba02edfa973902068db1cb033b531c3d90d3b8ce9f6f11a5aa62ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e4747a60dba02edfa973902068db1cb033b531c3d90d3b8ce9f6f11a5aa62ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e4747a60dba02edfa973902068db1cb033b531c3d90d3b8ce9f6f11a5aa62ff", kill_on_drop: false }`
[INFO] [stdout] 1e4747a60dba02edfa973902068db1cb033b531c3d90d3b8ce9f6f11a5aa62ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fdcb2f05b0e66ffd3aa024caca3d02a93b2bb4bc8e5a8572265376d060b98e9
[INFO] running `Command { std: "docker" "start" "-a" "1fdcb2f05b0e66ffd3aa024caca3d02a93b2bb4bc8e5a8572265376d060b98e9", kill_on_drop: false }`
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[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
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[INFO] [stderr]    Compiling autocfg v1.0.1
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[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.77.0
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling cranelift-entity v0.77.0
[INFO] [stderr]    Compiling target-lexicon v0.12.2
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[INFO] [stderr]     Checking smallvec v1.6.1
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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 21.88s
[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" "1fdcb2f05b0e66ffd3aa024caca3d02a93b2bb4bc8e5a8572265376d060b98e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fdcb2f05b0e66ffd3aa024caca3d02a93b2bb4bc8e5a8572265376d060b98e9", kill_on_drop: false }`
[INFO] [stdout] 1fdcb2f05b0e66ffd3aa024caca3d02a93b2bb4bc8e5a8572265376d060b98e9
