[INFO] crate chainbuf 0.0.9 is already in cache
[INFO] testing chainbuf-0.0.9 against 1.38.0 for beta-1.39-1
[INFO] extracting crate chainbuf 0.0.9 into work/builds/worker-0/source
[INFO] validating manifest of crates.io crate chainbuf 0.0.9 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate chainbuf 0.0.9
[INFO] finished tweaking crates.io crate chainbuf 0.0.9
[INFO] tweaked toml for crates.io crate chainbuf 0.0.9 written to work/builds/worker-0/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] ba4c9a54c8586a9822b88a5e41d0e500c40c040b2dcf2455a72ad57586f50f08
[INFO] running `"docker" "start" "-a" "ba4c9a54c8586a9822b88a5e41d0e500c40c040b2dcf2455a72ad57586f50f08"`
[INFO] [stderr]    Compiling chainbuf v0.0.9 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1022:38
[INFO] [stderr]      |
[INFO] [stderr] 1022 |     fn as_immut<'a>(&'a self) -> &'a ImmutableDataHolder;
[INFO] [stderr]      |                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ImmutableDataHolder`
[INFO] [stderr]      |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]     --> src/lib.rs:3:9
[INFO] [stderr]      |
[INFO] [stderr] 3    | #![deny(warnings)]
[INFO] [stderr]      |         ^^^^^^^^
[INFO] [stderr]      = note: `#[warn(bare_trait_objects)]` implied by `#[warn(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1027:16
[INFO] [stderr]      |
[INFO] [stderr] 1027 |     Mutable(Rc<MutableDataHolder + 'src>),
[INFO] [stderr]      |                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MutableDataHolder + 'src`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1028:18
[INFO] [stderr]      |
[INFO] [stderr] 1028 |     Immutable(Rc<ImmutableDataHolder + 'src>),
[INFO] [stderr]      |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ImmutableDataHolder + 'src`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1033:45
[INFO] [stderr]      |
[INFO] [stderr] 1033 |     fn holder_mut(&mut self) -> Option<&mut MutableDataHolder> {
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MutableDataHolder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1047:26
[INFO] [stderr]      |
[INFO] [stderr] 1047 |     fn holder(&self) -> &ImmutableDataHolder {
[INFO] [stderr]      |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ImmutableDataHolder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1120:38
[INFO] [stderr]      |
[INFO] [stderr] 1120 |     fn as_immut<'a>(&'a self) -> &'a ImmutableDataHolder {
[INFO] [stderr]      |                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ImmutableDataHolder`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "ba4c9a54c8586a9822b88a5e41d0e500c40c040b2dcf2455a72ad57586f50f08"`
[INFO] running `"docker" "rm" "-f" "ba4c9a54c8586a9822b88a5e41d0e500c40c040b2dcf2455a72ad57586f50f08"`
[INFO] [stdout] ba4c9a54c8586a9822b88a5e41d0e500c40c040b2dcf2455a72ad57586f50f08
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 57bb430a5d4402f158463f5286b45fd332b5e1389686b78a71d29cbcdf3c5ec9
[INFO] running `"docker" "start" "-a" "57bb430a5d4402f158463f5286b45fd332b5e1389686b78a71d29cbcdf3c5ec9"`
[INFO] [stderr]    Compiling chainbuf v0.0.9 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1022:38
[INFO] [stderr]      |
[INFO] [stderr] 1022 |     fn as_immut<'a>(&'a self) -> &'a ImmutableDataHolder;
[INFO] [stderr]      |                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ImmutableDataHolder`
[INFO] [stderr]      |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]     --> src/lib.rs:3:9
[INFO] [stderr]      |
[INFO] [stderr] 3    | #![deny(warnings)]
[INFO] [stderr]      |         ^^^^^^^^
[INFO] [stderr]      = note: `#[warn(bare_trait_objects)]` implied by `#[warn(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1027:16
[INFO] [stderr]      |
[INFO] [stderr] 1027 |     Mutable(Rc<MutableDataHolder + 'src>),
[INFO] [stderr]      |                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MutableDataHolder + 'src`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1028:18
[INFO] [stderr]      |
[INFO] [stderr] 1028 |     Immutable(Rc<ImmutableDataHolder + 'src>),
[INFO] [stderr]      |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ImmutableDataHolder + 'src`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1033:45
[INFO] [stderr]      |
[INFO] [stderr] 1033 |     fn holder_mut(&mut self) -> Option<&mut MutableDataHolder> {
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MutableDataHolder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1047:26
[INFO] [stderr]      |
[INFO] [stderr] 1047 |     fn holder(&self) -> &ImmutableDataHolder {
[INFO] [stderr]      |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ImmutableDataHolder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/chainbuf.rs:1120:38
[INFO] [stderr]      |
[INFO] [stderr] 1120 |     fn as_immut<'a>(&'a self) -> &'a ImmutableDataHolder {
[INFO] [stderr]      |                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ImmutableDataHolder`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> tests/unit.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> tests/integration.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `chainbuf`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `chainbuf`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "57bb430a5d4402f158463f5286b45fd332b5e1389686b78a71d29cbcdf3c5ec9"`
[INFO] running `"docker" "rm" "-f" "57bb430a5d4402f158463f5286b45fd332b5e1389686b78a71d29cbcdf3c5ec9"`
[INFO] [stdout] 57bb430a5d4402f158463f5286b45fd332b5e1389686b78a71d29cbcdf3c5ec9