[INFO] fetching crate jkl-lang 0.1.51...
[INFO] checking jkl-lang-0.1.51 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate jkl-lang 0.1.51 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate jkl-lang 0.1.51
[INFO] finished tweaking crates.io crate jkl-lang 0.1.51
[INFO] tweaked toml for crates.io crate jkl-lang 0.1.51 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate jkl-lang 0.1.51 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate jkl-lang 0.1.51 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-complex v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e77641543db1fc37a3a9f8b0ee756a05e1241171f4c3cde9be210a794c88aed
[INFO] running `Command { std: "docker" "start" "-a" "5e77641543db1fc37a3a9f8b0ee756a05e1241171f4c3cde9be210a794c88aed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e77641543db1fc37a3a9f8b0ee756a05e1241171f4c3cde9be210a794c88aed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e77641543db1fc37a3a9f8b0ee756a05e1241171f4c3cde9be210a794c88aed", kill_on_drop: false }`
[INFO] [stdout] 5e77641543db1fc37a3a9f8b0ee756a05e1241171f4c3cde9be210a794c88aed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ffbd36173067bf7e306153e55f6aab54370591c39640bb0889fc0447c8c4aaf
[INFO] running `Command { std: "docker" "start" "-a" "0ffbd36173067bf7e306153e55f6aab54370591c39640bb0889fc0447c8c4aaf", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking jkl-lang v0.1.51 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]    --> src/expr.rs:242:9
[INFO] [stdout]     |
[INFO] [stdout] 240 |     AnonFunction {
[INFO] [stdout]     |     ------------ field in this variant
[INFO] [stdout] 241 |         id: usize,
[INFO] [stdout] 242 |         paren: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` 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: field `paren` is never read
[INFO] [stdout]    --> src/expr.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |     Call {
[INFO] [stdout]     |     ---- field in this variant
[INFO] [stdout] ...
[INFO] [stdout] 260 |         paren: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]   --> src/stmt.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     ReturnStmt {
[INFO] [stdout]    |     ---------- field in this variant
[INFO] [stdout] 47 |         keyword: Token,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]    --> src/expr.rs:242:9
[INFO] [stdout]     |
[INFO] [stdout] 240 |     AnonFunction {
[INFO] [stdout]     |     ------------ field in this variant
[INFO] [stdout] 241 |         id: usize,
[INFO] [stdout] 242 |         paren: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` 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: field `paren` is never read
[INFO] [stdout]    --> src/expr.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |     Call {
[INFO] [stdout]     |     ---- field in this variant
[INFO] [stdout] ...
[INFO] [stdout] 260 |         paren: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]   --> src/stmt.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     ReturnStmt {
[INFO] [stdout]    |     ---------- field in this variant
[INFO] [stdout] 47 |         keyword: Token,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.43s
[INFO] running `Command { std: "docker" "inspect" "0ffbd36173067bf7e306153e55f6aab54370591c39640bb0889fc0447c8c4aaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ffbd36173067bf7e306153e55f6aab54370591c39640bb0889fc0447c8c4aaf", kill_on_drop: false }`
[INFO] [stdout] 0ffbd36173067bf7e306153e55f6aab54370591c39640bb0889fc0447c8c4aaf