[INFO] crate rw 1.0.0 is already in cache
[INFO] extracting crate rw 1.0.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/rw/1.0.0
[INFO] extracting crate rw 1.0.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rw/1.0.0
[INFO] validating manifest of rw-1.0.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rw-1.0.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rw-1.0.0
[INFO] finished frobbing rw-1.0.0
[INFO] frobbed toml for rw-1.0.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/rw/1.0.0/Cargo.toml
[INFO] started frobbing rw-1.0.0
[INFO] finished frobbing rw-1.0.0
[INFO] frobbed toml for rw-1.0.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rw/1.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing rw-1.0.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rw/1.0.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 73cb74ec1f3f91904cc527e7d22f485b6d82207917fde4a3bd26b259ccdd9eb2
[INFO] running `"docker" "start" "-a" "73cb74ec1f3f91904cc527e7d22f485b6d82207917fde4a3bd26b259ccdd9eb2"`
[INFO] [stderr]    Compiling rw v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:14:22
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn pipe(reader: &mut Read, writer: &mut Write) {
[INFO] [stderr]    |                      ^^^^ help: use `dyn`: `dyn Read`
[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:14:41
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn pipe(reader: &mut Read, writer: &mut Write) {
[INFO] [stderr]    |                                         ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:51:22
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut out: Box<Write> = match matches.free.first() {
[INFO] [stderr]    |                      ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "73cb74ec1f3f91904cc527e7d22f485b6d82207917fde4a3bd26b259ccdd9eb2"`
[INFO] running `"docker" "rm" "-f" "73cb74ec1f3f91904cc527e7d22f485b6d82207917fde4a3bd26b259ccdd9eb2"`
[INFO] [stdout] 73cb74ec1f3f91904cc527e7d22f485b6d82207917fde4a3bd26b259ccdd9eb2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rw/1.0.0:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 546c42b2ccb2006543b19cad0a016f5425ed59c2fc36d7395cb60bd7c7e9fa53
[INFO] running `"docker" "start" "-a" "546c42b2ccb2006543b19cad0a016f5425ed59c2fc36d7395cb60bd7c7e9fa53"`
[INFO] [stderr]    Compiling rw v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:14:22
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn pipe(reader: &mut Read, writer: &mut Write) {
[INFO] [stderr]    |                      ^^^^ help: use `dyn`: `dyn Read`
[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:14:41
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn pipe(reader: &mut Read, writer: &mut Write) {
[INFO] [stderr]    |                                         ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:51:22
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut out: Box<Write> = match matches.free.first() {
[INFO] [stderr]    |                      ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "546c42b2ccb2006543b19cad0a016f5425ed59c2fc36d7395cb60bd7c7e9fa53"`
[INFO] running `"docker" "rm" "-f" "546c42b2ccb2006543b19cad0a016f5425ed59c2fc36d7395cb60bd7c7e9fa53"`
[INFO] [stdout] 546c42b2ccb2006543b19cad0a016f5425ed59c2fc36d7395cb60bd7c7e9fa53
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rw/1.0.0:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 2f6320c19d6f5a3f275ccf6219f9ee60b93631e5e324eb9d0ef643beed8281bd
[INFO] running `"docker" "start" "-a" "2f6320c19d6f5a3f275ccf6219f9ee60b93631e5e324eb9d0ef643beed8281bd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rw-3cd2681f3a44d8df
[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" "2f6320c19d6f5a3f275ccf6219f9ee60b93631e5e324eb9d0ef643beed8281bd"`
[INFO] running `"docker" "rm" "-f" "2f6320c19d6f5a3f275ccf6219f9ee60b93631e5e324eb9d0ef643beed8281bd"`
[INFO] [stdout] 2f6320c19d6f5a3f275ccf6219f9ee60b93631e5e324eb9d0ef643beed8281bd