[INFO] updating cached repository jfyuen/rstgc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jfyuen/rstgc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jfyuen/rstgc" "work/ex/beta-1.38-1/sources/1.37.0/gh/jfyuen/rstgc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jfyuen/rstgc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jfyuen/rstgc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jfyuen/rstgc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jfyuen/rstgc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cd057b9c6b7666b99f821501d6db993ee68c179f
[INFO] sha for GitHub repo jfyuen/rstgc: cd057b9c6b7666b99f821501d6db993ee68c179f
[INFO] validating manifest of jfyuen/rstgc 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 jfyuen/rstgc 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 jfyuen/rstgc
[INFO] finished frobbing jfyuen/rstgc
[INFO] frobbed toml for jfyuen/rstgc written to work/ex/beta-1.38-1/sources/1.37.0/gh/jfyuen/rstgc/Cargo.toml
[INFO] started frobbing jfyuen/rstgc
[INFO] finished frobbing jfyuen/rstgc
[INFO] frobbed toml for jfyuen/rstgc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jfyuen/rstgc/Cargo.toml
[INFO] crate jfyuen/rstgc 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 jfyuen/rstgc against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jfyuen/rstgc:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 4e0758dbb6a949faf5aee4159cb876e191318f654bca7bf235c305143311fea0
[INFO] running `"docker" "start" "-a" "4e0758dbb6a949faf5aee4159cb876e191318f654bca7bf235c305143311fea0"`
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]    Compiling term v0.5.1
[INFO] [stderr]    Compiling slog-term v2.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]    Compiling rstgc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:36:32
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn cause(&self) -> Option<&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]   --> src/message.rs:22:21
[INFO] [stderr]    |
[INFO] [stderr] 22 |     mut writer: Box<std::io::Write>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/message.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |     mut reader: Box<std::io::Read>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:39:48
[INFO] [stderr]    |
[INFO] [stderr] 39 |             TgcError::ChanReceiveError(e) => e.cause(),
[INFO] [stderr]    |                                                ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:40:39
[INFO] [stderr]    |
[INFO] [stderr] 40 |             TgcError::IOError(e) => e.cause(),
[INFO] [stderr]    |                                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:41:46
[INFO] [stderr]    |
[INFO] [stderr] 41 |             TgcError::SerializeError(e) => e.cause(),
[INFO] [stderr]    |                                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/server.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let mut stream = stream?;
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.75s
[INFO] running `"docker" "inspect" "4e0758dbb6a949faf5aee4159cb876e191318f654bca7bf235c305143311fea0"`
[INFO] running `"docker" "rm" "-f" "4e0758dbb6a949faf5aee4159cb876e191318f654bca7bf235c305143311fea0"`
[INFO] [stdout] 4e0758dbb6a949faf5aee4159cb876e191318f654bca7bf235c305143311fea0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jfyuen/rstgc:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a927496d614e32b4057eef82de0078ce0fb3c4626c0f3306c3fd39964cb23494
[INFO] running `"docker" "start" "-a" "a927496d614e32b4057eef82de0078ce0fb3c4626c0f3306c3fd39964cb23494"`
[INFO] [stderr]    Compiling rstgc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:36:32
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn cause(&self) -> Option<&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]   --> src/message.rs:22:21
[INFO] [stderr]    |
[INFO] [stderr] 22 |     mut writer: Box<std::io::Write>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/message.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |     mut reader: Box<std::io::Read>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:39:48
[INFO] [stderr]    |
[INFO] [stderr] 39 |             TgcError::ChanReceiveError(e) => e.cause(),
[INFO] [stderr]    |                                                ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:40:39
[INFO] [stderr]    |
[INFO] [stderr] 40 |             TgcError::IOError(e) => e.cause(),
[INFO] [stderr]    |                                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:41:46
[INFO] [stderr]    |
[INFO] [stderr] 41 |             TgcError::SerializeError(e) => e.cause(),
[INFO] [stderr]    |                                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/server.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let mut stream = stream?;
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `"docker" "inspect" "a927496d614e32b4057eef82de0078ce0fb3c4626c0f3306c3fd39964cb23494"`
[INFO] running `"docker" "rm" "-f" "a927496d614e32b4057eef82de0078ce0fb3c4626c0f3306c3fd39964cb23494"`
[INFO] [stdout] a927496d614e32b4057eef82de0078ce0fb3c4626c0f3306c3fd39964cb23494
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jfyuen/rstgc:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 537470a8fa5e66d58f6c1d0d51255102034b1012e75482efbd09360c3df319f8
[INFO] running `"docker" "start" "-a" "537470a8fa5e66d58f6c1d0d51255102034b1012e75482efbd09360c3df319f8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rstgc-6868e4c41f4da72d
[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" "537470a8fa5e66d58f6c1d0d51255102034b1012e75482efbd09360c3df319f8"`
[INFO] running `"docker" "rm" "-f" "537470a8fa5e66d58f6c1d0d51255102034b1012e75482efbd09360c3df319f8"`
[INFO] [stdout] 537470a8fa5e66d58f6c1d0d51255102034b1012e75482efbd09360c3df319f8