[INFO] fetching crate diatom-core 0.6.1...
[INFO] checking diatom-core-0.6.1 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate diatom-core 0.6.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate diatom-core 0.6.1 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate diatom-core 0.6.1
[INFO] finished tweaking crates.io crate diatom-core 0.6.1
[INFO] tweaked toml for crates.io crate diatom-core 0.6.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 42 packages to latest compatible versions
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94d8e1bbcfd37d646297e338b2f9aa07953dd4e64bcd21cbe749279d469a9a2f
[INFO] running `Command { std: "docker" "start" "-a" "94d8e1bbcfd37d646297e338b2f9aa07953dd4e64bcd21cbe749279d469a9a2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94d8e1bbcfd37d646297e338b2f9aa07953dd4e64bcd21cbe749279d469a9a2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94d8e1bbcfd37d646297e338b2f9aa07953dd4e64bcd21cbe749279d469a9a2f", kill_on_drop: false }`
[INFO] [stdout] 94d8e1bbcfd37d646297e338b2f9aa07953dd4e64bcd21cbe749279d469a9a2f
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88a71bad9074529c2e1147579716ce16594e2607da157869a7c6d6725f72bd17
[INFO] running `Command { std: "docker" "start" "-a" "88a71bad9074529c2e1147579716ce16594e2607da157869a7c6d6725f72bd17", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking more-asserts v0.3.1
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]    Compiling enum_dispatch v0.3.13
[INFO] [stderr]     Checking diatom-core v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Keyword` and `Operator`
[INFO] [stdout]  --> src/frontend/mod.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use lexer::{Keyword, Lexer, Operator, Token};
[INFO] [stdout]   |                 ^^^^^^^         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Keyword` and `Operator`
[INFO] [stdout]  --> src/frontend/mod.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use lexer::{Keyword, Lexer, Operator, Token};
[INFO] [stdout]   |                 ^^^^^^^         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loc` is never read
[INFO] [stdout]   --> src/frontend/parser/ast.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Expr {
[INFO] [stdout]    |     ---- field in this variant
[INFO] [stdout] 13 |         loc: Loc,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has a derived impl for the trait `Clone`, 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 `gc` and `insts` are never read
[INFO] [stdout]   --> src/interpreter/scanner/capture_scanner.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct CaptureScanner<'a, Buffer: IoWrite> {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 9  |     pub register_table: &'a mut RegisterTable,
[INFO] [stdout] 10 |     pub gc: &'a mut Gc<Buffer>,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 11 |     pub insts: &'a mut Vec<VmInst>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LibDummy` is never constructed
[INFO] [stdout]   --> src/interpreter/std_core.rs:64:19
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub(crate) struct LibDummy;
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loc` is never read
[INFO] [stdout]    --> src/vm/op.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub struct OpImport {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 193 |     pub loc: Loc,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loc` is never read
[INFO] [stdout]    --> src/vm/op.rs:339:9
[INFO] [stdout]     |
[INFO] [stdout] 338 | pub struct OpMakeClosure {
[INFO] [stdout]     |            ------------- field in this struct
[INFO] [stdout] 339 |     pub loc: Loc,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loc` is never read
[INFO] [stdout]     --> src/vm/op.rs:1436:9
[INFO] [stdout]      |
[INFO] [stdout] 1435 | pub struct OpJump {
[INFO] [stdout]      |            ------ field in this struct
[INFO] [stdout] 1436 |     pub loc: Loc,
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loc` is never read
[INFO] [stdout]   --> src/frontend/parser/ast.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Expr {
[INFO] [stdout]    |     ---- field in this variant
[INFO] [stdout] 13 |         loc: Loc,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has a derived impl for the trait `Clone`, 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 `gc` and `insts` are never read
[INFO] [stdout]   --> src/interpreter/scanner/capture_scanner.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct CaptureScanner<'a, Buffer: IoWrite> {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 9  |     pub register_table: &'a mut RegisterTable,
[INFO] [stdout] 10 |     pub gc: &'a mut Gc<Buffer>,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 11 |     pub insts: &'a mut Vec<VmInst>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loc` is never read
[INFO] [stdout]    --> src/vm/op.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub struct OpImport {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 193 |     pub loc: Loc,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loc` is never read
[INFO] [stdout]    --> src/vm/op.rs:339:9
[INFO] [stdout]     |
[INFO] [stdout] 338 | pub struct OpMakeClosure {
[INFO] [stdout]     |            ------------- field in this struct
[INFO] [stdout] 339 |     pub loc: Loc,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loc` is never read
[INFO] [stdout]     --> src/vm/op.rs:1436:9
[INFO] [stdout]      |
[INFO] [stdout] 1435 | pub struct OpJump {
[INFO] [stdout]      |            ------ field in this struct
[INFO] [stdout] 1436 |     pub loc: Loc,
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `Command { std: "docker" "inspect" "88a71bad9074529c2e1147579716ce16594e2607da157869a7c6d6725f72bd17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88a71bad9074529c2e1147579716ce16594e2607da157869a7c6d6725f72bd17", kill_on_drop: false }`
[INFO] [stdout] 88a71bad9074529c2e1147579716ce16594e2607da157869a7c6d6725f72bd17