[INFO] updating cached repository https://github.com/afaur/app2png-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] f0e24d524f9938beadb965c12db0053a898ac543
[INFO] testing afaur/app2png-rs against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fafaur%2Fapp2png-rs" "work/builds/worker-10/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/afaur/app2png-rs on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/afaur/app2png-rs
[INFO] finished tweaking git repo https://github.com/afaur/app2png-rs
[INFO] tweaked toml for git repo https://github.com/afaur/app2png-rs written to work/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/afaur/app2png-rs already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-10/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 2bd2ef47dfaf2f3a5debbb3379de215af82540252cb9f4afb8c4d2489fd939ff
[INFO] running `"docker" "start" "-a" "2bd2ef47dfaf2f3a5debbb3379de215af82540252cb9f4afb8c4d2489fd939ff"`
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]    Compiling adler32 v1.0.4
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling plist v0.1.3
[INFO] [stderr]    Compiling inflate v0.1.1
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling serde v0.9.15
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling xml-rs v0.3.6
[INFO] [stderr]    Compiling gif v0.9.2
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling inflate v0.3.4
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling icns v0.2.2
[INFO] [stderr]    Compiling png v0.6.2
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.16
[INFO] [stderr]    Compiling image v0.12.4
[INFO] [stderr]    Compiling app2png-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::From<&_>`
[INFO] [stderr]   --> src/main.rs:33:24
[INFO] [stderr]    |
[INFO] [stderr] 33 |               let pi = String::from(possible_icon.as_ref());
[INFO] [stderr]    |                        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: required by `std::convert::From::from`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: Could not compile `app2png-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2bd2ef47dfaf2f3a5debbb3379de215af82540252cb9f4afb8c4d2489fd939ff"`
[INFO] running `"docker" "rm" "-f" "2bd2ef47dfaf2f3a5debbb3379de215af82540252cb9f4afb8c4d2489fd939ff"`
[INFO] [stdout] 2bd2ef47dfaf2f3a5debbb3379de215af82540252cb9f4afb8c4d2489fd939ff