[INFO] updating cached repository quells/rcc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/quells/rcc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/quells/rcc" "work/ex/beta-1.38-1/sources/1.37.0/gh/quells/rcc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/quells/rcc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/quells/rcc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quells/rcc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quells/rcc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a19454b6b33872efb5c3c6e3a7941accfb6246cd
[INFO] sha for GitHub repo quells/rcc: a19454b6b33872efb5c3c6e3a7941accfb6246cd
[INFO] validating manifest of quells/rcc 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 quells/rcc 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 quells/rcc
[INFO] finished frobbing quells/rcc
[INFO] frobbed toml for quells/rcc written to work/ex/beta-1.38-1/sources/1.37.0/gh/quells/rcc/Cargo.toml
[INFO] started frobbing quells/rcc
[INFO] finished frobbing quells/rcc
[INFO] frobbed toml for quells/rcc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quells/rcc/Cargo.toml
[INFO] crate quells/rcc already has a lockfile, it will not be regenerated
[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 quells/rcc 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-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quells/rcc:/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] c21b66b639a8388b872930e415bd676b6432e111c0ea45028501d3022085a324
[INFO] running `"docker" "start" "-a" "c21b66b639a8388b872930e415bd676b6432e111c0ea45028501d3022085a324"`
[INFO] [stderr]    Compiling rcc v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:10:72
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn run(input: &str, output: &str, verbose: bool) -> 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]     Finished dev [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `"docker" "inspect" "c21b66b639a8388b872930e415bd676b6432e111c0ea45028501d3022085a324"`
[INFO] running `"docker" "rm" "-f" "c21b66b639a8388b872930e415bd676b6432e111c0ea45028501d3022085a324"`
[INFO] [stdout] c21b66b639a8388b872930e415bd676b6432e111c0ea45028501d3022085a324
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quells/rcc:/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] 19057a36be252802a7c7dd63c9d75294012a7b2b4d2cfec06ec76e4c4a52a395
[INFO] running `"docker" "start" "-a" "19057a36be252802a7c7dd63c9d75294012a7b2b4d2cfec06ec76e4c4a52a395"`
[INFO] [stderr]    Compiling rcc v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:10:72
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn run(input: &str, output: &str, verbose: bool) -> 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `"docker" "inspect" "19057a36be252802a7c7dd63c9d75294012a7b2b4d2cfec06ec76e4c4a52a395"`
[INFO] running `"docker" "rm" "-f" "19057a36be252802a7c7dd63c9d75294012a7b2b4d2cfec06ec76e4c4a52a395"`
[INFO] [stdout] 19057a36be252802a7c7dd63c9d75294012a7b2b4d2cfec06ec76e4c4a52a395
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quells/rcc:/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] 21a73b4f351ee5e1c77531392a77c000beee7f5d0fd5f1daf9a02b54f961f36b
[INFO] running `"docker" "start" "-a" "21a73b4f351ee5e1c77531392a77c000beee7f5d0fd5f1daf9a02b54f961f36b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rcc-f537e1219b707c0c
[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/crater/target/debug/deps/rcc-ec5c0276a70e0fb1
[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]    Doc-tests rcc
[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" "21a73b4f351ee5e1c77531392a77c000beee7f5d0fd5f1daf9a02b54f961f36b"`
[INFO] running `"docker" "rm" "-f" "21a73b4f351ee5e1c77531392a77c000beee7f5d0fd5f1daf9a02b54f961f36b"`
[INFO] [stdout] 21a73b4f351ee5e1c77531392a77c000beee7f5d0fd5f1daf9a02b54f961f36b