[INFO] updating cached repository https://github.com/aadonskoy/pdf_form_filler
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fa8bd36fb8e4a70c140e92c558b3d076a9784bd7
[INFO] checking aadonskoy/pdf_form_filler against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faadonskoy%2Fpdf_form_filler" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aadonskoy/pdf_form_filler on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aadonskoy/pdf_form_filler
[INFO] finished tweaking git repo https://github.com/aadonskoy/pdf_form_filler
[INFO] tweaked toml for git repo https://github.com/aadonskoy/pdf_form_filler written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/aadonskoy/pdf_form_filler already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3e7c2ed3f73b8ebf4ce71c2d4f76a52f3b20d3f57787983f606c591a1ac9dfd1
[INFO] running `"docker" "start" "-a" "3e7c2ed3f73b8ebf4ce71c2d4f76a52f3b20d3f57787983f606c591a1ac9dfd1"`
[INFO] [stderr]    Compiling libcruby-sys v0.7.5
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]     Checking cstr-macro v0.1.0
[INFO] [stderr]     Checking miniz-sys v0.1.12
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]    Compiling derive-error v0.0.4
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking helix v0.7.5
[INFO] [stderr]     Checking chrono v0.3.0
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking lopdf v0.15.3
[INFO] [stderr]     Checking pdf_form_ids v0.4.0
[INFO] [stderr]     Checking pdf_form_filler v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | / ruby! {
[INFO] [stderr] 14 | |     class PdfFormFiller {
[INFO] [stderr] 15 | |         def work() -> String {
[INFO] [stderr] 16 | |             return "It work".to_string()
[INFO] [stderr] ...  |
[INFO] [stderr] 23 | |     }
[INFO] [stderr] 24 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_out`
[INFO] [stderr]   --> src/lib.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn process_file(file_in: &str, file_out: &str, dataset: HashMap<String, String>) {
[INFO] [stderr]    |                                ^^^^^^^^ help: consider prefixing with an underscore: `_file_out`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | / ruby! {
[INFO] [stderr] 14 | |     class PdfFormFiller {
[INFO] [stderr] 15 | |         def work() -> String {
[INFO] [stderr] 16 | |             return "It work".to_string()
[INFO] [stderr] ...  |
[INFO] [stderr] 23 | |     }
[INFO] [stderr] 24 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_out`
[INFO] [stderr]   --> src/lib.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn process_file(file_in: &str, file_out: &str, dataset: HashMap<String, String>) {
[INFO] [stderr]    |                                ^^^^^^^^ help: consider prefixing with an underscore: `_file_out`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.42s
[INFO] running `"docker" "inspect" "3e7c2ed3f73b8ebf4ce71c2d4f76a52f3b20d3f57787983f606c591a1ac9dfd1"`
[INFO] running `"docker" "rm" "-f" "3e7c2ed3f73b8ebf4ce71c2d4f76a52f3b20d3f57787983f606c591a1ac9dfd1"`
[INFO] [stdout] 3e7c2ed3f73b8ebf4ce71c2d4f76a52f3b20d3f57787983f606c591a1ac9dfd1