[INFO] updating cached repository https://github.com/ian-hamlin/qrgen
[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] d6a796c078c30005bc0e45a336bf8dbf55e3ef1d
[INFO] checking ian-hamlin/qrgen against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fian-hamlin%2Fqrgen" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ian-hamlin/qrgen on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ian-hamlin/qrgen
[INFO] finished tweaking git repo https://github.com/ian-hamlin/qrgen
[INFO] tweaked toml for git repo https://github.com/ian-hamlin/qrgen written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ian-hamlin/qrgen already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] ea7c49b0f35ab27d3e0ed32ac7bca1b3ba59c8db67a10db10b183848b479f8df
[INFO] running `"docker" "start" "-a" "ea7c49b0f35ab27d3e0ed32ac7bca1b3ba59c8db67a10db10b183848b479f8df"`
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]     Checking qrcodegen v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.28
[INFO] [stderr]     Checking memchr v2.2.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking csv v1.0.7
[INFO] [stderr]     Checking regex v1.1.6
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]     Checking qrgen v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/exporter.rs:46:48
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn export(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/exporter.rs:81:25
[INFO] [stderr]    |
[INFO] [stderr] 81 |     ) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/exporter.rs:106:25
[INFO] [stderr]     |
[INFO] [stderr] 106 |     ) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generator.rs:39:67
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn process_file(&self, file_path: &PathBuf) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/exporter.rs:46:48
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn export(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/exporter.rs:81:25
[INFO] [stderr]    |
[INFO] [stderr] 81 |     ) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/exporter.rs:106:25
[INFO] [stderr]     |
[INFO] [stderr] 106 |     ) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generator.rs:39:67
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn process_file(&self, file_path: &PathBuf) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.10s
[INFO] running `"docker" "inspect" "ea7c49b0f35ab27d3e0ed32ac7bca1b3ba59c8db67a10db10b183848b479f8df"`
[INFO] running `"docker" "rm" "-f" "ea7c49b0f35ab27d3e0ed32ac7bca1b3ba59c8db67a10db10b183848b479f8df"`
[INFO] [stdout] ea7c49b0f35ab27d3e0ed32ac7bca1b3ba59c8db67a10db10b183848b479f8df