[INFO] crate stego 0.1.4 is already in cache
[INFO] testing stego-0.1.4 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate stego 0.1.4 into work/builds/worker-10/source
[INFO] validating manifest of crates.io crate stego 0.1.4 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate stego 0.1.4
[INFO] finished tweaking crates.io crate stego 0.1.4
[INFO] tweaked toml for crates.io crate stego 0.1.4 written to work/builds/worker-10/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] c4f0f63c001087a9e07c745b830b19895a5d32678b63b1a233f069d64911d148
[INFO] running `"docker" "start" "-a" "c4f0f63c001087a9e07c745b830b19895a5d32678b63b1a233f069d64911d148"`
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.16
[INFO] [stderr]    Compiling image v0.21.3
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling stego v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:111:17
[INFO] [stderr]     |
[INFO] [stderr] 111 |             let mut im2;
[INFO] [stderr]     |                 ----^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.82s
[INFO] running `"docker" "inspect" "c4f0f63c001087a9e07c745b830b19895a5d32678b63b1a233f069d64911d148"`
[INFO] running `"docker" "rm" "-f" "c4f0f63c001087a9e07c745b830b19895a5d32678b63b1a233f069d64911d148"`
[INFO] [stdout] c4f0f63c001087a9e07c745b830b19895a5d32678b63b1a233f069d64911d148
[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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 412b9dc00b3124a43eceb63a278e7c1ec620bddf7079ac9b1bc4f64ec8464a5e
[INFO] running `"docker" "start" "-a" "412b9dc00b3124a43eceb63a278e7c1ec620bddf7079ac9b1bc4f64ec8464a5e"`
[INFO] [stderr]    Compiling stego v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:111:17
[INFO] [stderr]     |
[INFO] [stderr] 111 |             let mut im2;
[INFO] [stderr]     |                 ----^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.18s
[INFO] running `"docker" "inspect" "412b9dc00b3124a43eceb63a278e7c1ec620bddf7079ac9b1bc4f64ec8464a5e"`
[INFO] running `"docker" "rm" "-f" "412b9dc00b3124a43eceb63a278e7c1ec620bddf7079ac9b1bc4f64ec8464a5e"`
[INFO] [stdout] 412b9dc00b3124a43eceb63a278e7c1ec620bddf7079ac9b1bc4f64ec8464a5e
[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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 8e47a14aa5beea73462bb807395e181f8469f1a34b9f799b28ec26b460b6c800
[INFO] running `"docker" "start" "-a" "8e47a14aa5beea73462bb807395e181f8469f1a34b9f799b28ec26b460b6c800"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/stego-346e5d1791746f8b
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/stego-8160369af000ac11
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/common-91d94443667c029a
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test encode_decode_text ... ok
[INFO] [stdout] test encode_decode_binary ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stego
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "8e47a14aa5beea73462bb807395e181f8469f1a34b9f799b28ec26b460b6c800"`
[INFO] running `"docker" "rm" "-f" "8e47a14aa5beea73462bb807395e181f8469f1a34b9f799b28ec26b460b6c800"`
[INFO] [stdout] 8e47a14aa5beea73462bb807395e181f8469f1a34b9f799b28ec26b460b6c800