[INFO] crate rcat 2.0.4 is already in cache
[INFO] extracting crate rcat 2.0.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/rcat/2.0.4
[INFO] extracting crate rcat 2.0.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rcat/2.0.4
[INFO] validating manifest of rcat-2.0.4 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 rcat-2.0.4 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 rcat-2.0.4
[INFO] finished frobbing rcat-2.0.4
[INFO] frobbed toml for rcat-2.0.4 written to work/ex/beta-1.38-1/sources/1.37.0/reg/rcat/2.0.4/Cargo.toml
[INFO] started frobbing rcat-2.0.4
[INFO] finished frobbing rcat-2.0.4
[INFO] frobbed toml for rcat-2.0.4 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rcat/2.0.4/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 rcat-2.0.4 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-4/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/rcat/2.0.4:/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] aa928cb8df76e9a81821a0fe72994065769efd034d957a0061867f2a83665eb1
[INFO] running `"docker" "start" "-a" "aa928cb8df76e9a81821a0fe72994065769efd034d957a0061867f2a83665eb1"`
[INFO] [stderr]    Compiling rcat v2.0.4 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> main.rs:10:57
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn open_file(path: &path::Path) -> Result<fs::File, Box<error::Error>> {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^ help: use `dyn`: `dyn error::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]   --> main.rs:20:27
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn print_error(error: Box<error::Error>) {
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "aa928cb8df76e9a81821a0fe72994065769efd034d957a0061867f2a83665eb1"`
[INFO] running `"docker" "rm" "-f" "aa928cb8df76e9a81821a0fe72994065769efd034d957a0061867f2a83665eb1"`
[INFO] [stdout] aa928cb8df76e9a81821a0fe72994065769efd034d957a0061867f2a83665eb1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/rcat/2.0.4:/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] 4fd992b2eb50954cf0cc6d37b4482ea795bcbae5c31e49d89fa2b080ee9460f6
[INFO] running `"docker" "start" "-a" "4fd992b2eb50954cf0cc6d37b4482ea795bcbae5c31e49d89fa2b080ee9460f6"`
[INFO] [stderr]    Compiling rcat v2.0.4 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> main.rs:10:57
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn open_file(path: &path::Path) -> Result<fs::File, Box<error::Error>> {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^ help: use `dyn`: `dyn error::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]   --> main.rs:20:27
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn print_error(error: Box<error::Error>) {
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "4fd992b2eb50954cf0cc6d37b4482ea795bcbae5c31e49d89fa2b080ee9460f6"`
[INFO] running `"docker" "rm" "-f" "4fd992b2eb50954cf0cc6d37b4482ea795bcbae5c31e49d89fa2b080ee9460f6"`
[INFO] [stdout] 4fd992b2eb50954cf0cc6d37b4482ea795bcbae5c31e49d89fa2b080ee9460f6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/rcat/2.0.4:/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] 9106d8aed233a4dcbacda8ec84aa639c5519e80d8e53f321ee4c0708d92552a5
[INFO] running `"docker" "start" "-a" "9106d8aed233a4dcbacda8ec84aa639c5519e80d8e53f321ee4c0708d92552a5"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rcat-d5b0df44c9e737a0
[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" "9106d8aed233a4dcbacda8ec84aa639c5519e80d8e53f321ee4c0708d92552a5"`
[INFO] running `"docker" "rm" "-f" "9106d8aed233a4dcbacda8ec84aa639c5519e80d8e53f321ee4c0708d92552a5"`
[INFO] [stdout] 9106d8aed233a4dcbacda8ec84aa639c5519e80d8e53f321ee4c0708d92552a5