[INFO] crate cmail 0.3.0 is already in cache
[INFO] extracting crate cmail 0.3.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/cmail/0.3.0
[INFO] extracting crate cmail 0.3.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cmail/0.3.0
[INFO] validating manifest of cmail-0.3.0 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 cmail-0.3.0 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 cmail-0.3.0
[INFO] finished frobbing cmail-0.3.0
[INFO] frobbed toml for cmail-0.3.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/cmail/0.3.0/Cargo.toml
[INFO] started frobbing cmail-0.3.0
[INFO] finished frobbing cmail-0.3.0
[INFO] frobbed toml for cmail-0.3.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cmail/0.3.0/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] testing cmail-0.3.0 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-3/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/cmail/0.3.0:/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] f871c77f05602a12ca2d8a6a05135f29d70707d7f2481fff18d4036c2bb6de28
[INFO] running `"docker" "start" "-a" "f871c77f05602a12ca2d8a6a05135f29d70707d7f2481fff18d4036c2bb6de28"`
[INFO] [stderr]    Compiling cmail v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> cmail.rs:50:47
[INFO] [stderr]    |
[INFO] [stderr] 50 | type Result<T> = ::std::result::Result<T, Box<Error + Send + Sync>>;
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send + Sync`
[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]    --> cmail.rs:369:25
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn wtr(self) -> Box<io::Write> {
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.12s
[INFO] running `"docker" "inspect" "f871c77f05602a12ca2d8a6a05135f29d70707d7f2481fff18d4036c2bb6de28"`
[INFO] running `"docker" "rm" "-f" "f871c77f05602a12ca2d8a6a05135f29d70707d7f2481fff18d4036c2bb6de28"`
[INFO] [stdout] f871c77f05602a12ca2d8a6a05135f29d70707d7f2481fff18d4036c2bb6de28
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/cmail/0.3.0:/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] 4e5a0d34c9ca36c28cd1ae8e50c41af88323f0d7fcee4c237187859b2d8bdc73
[INFO] running `"docker" "start" "-a" "4e5a0d34c9ca36c28cd1ae8e50c41af88323f0d7fcee4c237187859b2d8bdc73"`
[INFO] [stderr]    Compiling cmail v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> cmail.rs:50:47
[INFO] [stderr]    |
[INFO] [stderr] 50 | type Result<T> = ::std::result::Result<T, Box<Error + Send + Sync>>;
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send + Sync`
[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]    --> cmail.rs:369:25
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn wtr(self) -> Box<io::Write> {
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `"docker" "inspect" "4e5a0d34c9ca36c28cd1ae8e50c41af88323f0d7fcee4c237187859b2d8bdc73"`
[INFO] running `"docker" "rm" "-f" "4e5a0d34c9ca36c28cd1ae8e50c41af88323f0d7fcee4c237187859b2d8bdc73"`
[INFO] [stdout] 4e5a0d34c9ca36c28cd1ae8e50c41af88323f0d7fcee4c237187859b2d8bdc73
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/cmail/0.3.0:/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] db5528349304c06a628ab9eb58abde019fa6a70a2186cffb56de28e5f6bc8d81
[INFO] running `"docker" "start" "-a" "db5528349304c06a628ab9eb58abde019fa6a70a2186cffb56de28e5f6bc8d81"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cmail-d915a3e0004a85f7
[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" "db5528349304c06a628ab9eb58abde019fa6a70a2186cffb56de28e5f6bc8d81"`
[INFO] running `"docker" "rm" "-f" "db5528349304c06a628ab9eb58abde019fa6a70a2186cffb56de28e5f6bc8d81"`
[INFO] [stdout] db5528349304c06a628ab9eb58abde019fa6a70a2186cffb56de28e5f6bc8d81