[INFO] fetching crate diatom-core 0.6.1...
[INFO] checking diatom-core-0.6.1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate diatom-core 0.6.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate diatom-core 0.6.1 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06f4508159f67fdafbb141c70ec289ff702a861994d36f7bb2a9844dfc905da8
[INFO] running `Command { std: "docker" "start" "-a" "06f4508159f67fdafbb141c70ec289ff702a861994d36f7bb2a9844dfc905da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06f4508159f67fdafbb141c70ec289ff702a861994d36f7bb2a9844dfc905da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06f4508159f67fdafbb141c70ec289ff702a861994d36f7bb2a9844dfc905da8", kill_on_drop: false }`
[INFO] [stdout] 06f4508159f67fdafbb141c70ec289ff702a861994d36f7bb2a9844dfc905da8
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3c5cd0ce6d3b580b9816a2f21066ad676296860c1e9dd95e1c355f37b2326d9
[INFO] running `Command { std: "docker" "start" "-a" "a3c5cd0ce6d3b580b9816a2f21066ad676296860c1e9dd95e1c355f37b2326d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking unicode-width v0.1.13
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]    Compiling enum_dispatch v0.3.13
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking more-asserts v0.3.1
[INFO] [stderr]     Checking bimap v0.6.3
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling const-random-macro v0.1.16
[INFO] [stderr]     Checking const-random v0.1.18
[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: 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: 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: 6 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 6.38s
[INFO] running `Command { std: "docker" "inspect" "a3c5cd0ce6d3b580b9816a2f21066ad676296860c1e9dd95e1c355f37b2326d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3c5cd0ce6d3b580b9816a2f21066ad676296860c1e9dd95e1c355f37b2326d9", kill_on_drop: false }`
[INFO] [stdout] a3c5cd0ce6d3b580b9816a2f21066ad676296860c1e9dd95e1c355f37b2326d9