[INFO] crate pngeq 0.1.0 is already in cache
[INFO] extracting crate pngeq 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/pngeq/0.1.0
[INFO] extracting crate pngeq 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pngeq/0.1.0
[INFO] validating manifest of pngeq-0.1.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pngeq-0.1.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pngeq-0.1.0
[INFO] finished frobbing pngeq-0.1.0
[INFO] frobbed toml for pngeq-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/pngeq/0.1.0/Cargo.toml
[INFO] started frobbing pngeq-0.1.0
[INFO] finished frobbing pngeq-0.1.0
[INFO] frobbed toml for pngeq-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pngeq/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing pngeq-0.1.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pngeq/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 825608d8d8ad1e94f201425112c7c8849251762b4924f06c0cf1e664eb9e820e
[INFO] running `"docker" "start" "-a" "825608d8d8ad1e94f201425112c7c8849251762b4924f06c0cf1e664eb9e820e"`
[INFO] [stderr]    Compiling lodepng v0.8.2
[INFO] [stderr]    Compiling c_vec v1.3.3
[INFO] [stderr]    Compiling exoquant v0.2.0
[INFO] [stderr]    Compiling pngeq v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:38:23
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let ditherer: Box<ditherer::Ditherer> = match matches.value_of("ditherer")
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ditherer::Ditherer`
[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/main.rs:55:38
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let (optimizer, opt_level): (Box<Optimizer>, u32) = match matches.value_of("optimization level")
[INFO] [stderr]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Optimizer`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.06s
[INFO] running `"docker" "inspect" "825608d8d8ad1e94f201425112c7c8849251762b4924f06c0cf1e664eb9e820e"`
[INFO] running `"docker" "rm" "-f" "825608d8d8ad1e94f201425112c7c8849251762b4924f06c0cf1e664eb9e820e"`
[INFO] [stdout] 825608d8d8ad1e94f201425112c7c8849251762b4924f06c0cf1e664eb9e820e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pngeq/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5abab0968512f5b914fba222669630d96d38026d53701eccd31e4201726d0098
[INFO] running `"docker" "start" "-a" "5abab0968512f5b914fba222669630d96d38026d53701eccd31e4201726d0098"`
[INFO] [stderr]    Compiling pngeq v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:38:23
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let ditherer: Box<ditherer::Ditherer> = match matches.value_of("ditherer")
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ditherer::Ditherer`
[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/main.rs:55:38
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let (optimizer, opt_level): (Box<Optimizer>, u32) = match matches.value_of("optimization level")
[INFO] [stderr]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Optimizer`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "5abab0968512f5b914fba222669630d96d38026d53701eccd31e4201726d0098"`
[INFO] running `"docker" "rm" "-f" "5abab0968512f5b914fba222669630d96d38026d53701eccd31e4201726d0098"`
[INFO] [stdout] 5abab0968512f5b914fba222669630d96d38026d53701eccd31e4201726d0098
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pngeq/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] a877876799709b3212e65669f10836fe45a2c7cdc7b61bcdeceffdbf643c2d7c
[INFO] running `"docker" "start" "-a" "a877876799709b3212e65669f10836fe45a2c7cdc7b61bcdeceffdbf643c2d7c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/pngeq-7237204fc6f26778
[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" "a877876799709b3212e65669f10836fe45a2c7cdc7b61bcdeceffdbf643c2d7c"`
[INFO] running `"docker" "rm" "-f" "a877876799709b3212e65669f10836fe45a2c7cdc7b61bcdeceffdbf643c2d7c"`
[INFO] [stdout] a877876799709b3212e65669f10836fe45a2c7cdc7b61bcdeceffdbf643c2d7c