[INFO] cloning repository https://github.com/mreboland/rustTraitsGenerics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mreboland/rustTraitsGenerics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmreboland%2FrustTraitsGenerics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmreboland%2FrustTraitsGenerics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 484201f2259c78579a7943dcb8b1f1d9a3632acd
[INFO] testing mreboland/rustTraitsGenerics against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmreboland%2FrustTraitsGenerics" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mreboland/rustTraitsGenerics on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mreboland/rustTraitsGenerics
[INFO] finished tweaking git repo https://github.com/mreboland/rustTraitsGenerics
[INFO] tweaked toml for git repo https://github.com/mreboland/rustTraitsGenerics written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/mreboland/rustTraitsGenerics already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1178df6d8c0976230edaa89ddb8d0839f1ebfe92acb57ed2ef955ac8f5b3d64b
[INFO] running `Command { std: "docker" "start" "-a" "1178df6d8c0976230edaa89ddb8d0839f1ebfe92acb57ed2ef955ac8f5b3d64b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1178df6d8c0976230edaa89ddb8d0839f1ebfe92acb57ed2ef955ac8f5b3d64b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1178df6d8c0976230edaa89ddb8d0839f1ebfe92acb57ed2ef955ac8f5b3d64b", kill_on_drop: false }`
[INFO] [stdout] 1178df6d8c0976230edaa89ddb8d0839f1ebfe92acb57ed2ef955ac8f5b3d64b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be5d9548717e09e0588cdf28c2e495e41480e2d859677ff9938775bb9b537e00
[INFO] running `Command { std: "docker" "start" "-a" "be5d9548717e09e0588cdf28c2e495e41480e2d859677ff9938775bb9b537e00", kill_on_drop: false }`
[INFO] [stderr]    Compiling traits_generics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]   --> src/main.rs:21:61
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn write_all(&mut self, buf: &[u8]) -> Result<()> { ... }
[INFO] [stdout]    |                                                             ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn write_all(&mut self, buf: &[u8]) -> Result<()> { .. }
[INFO] [stdout]    |                                                             ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn write_all(&mut self, buf: &[u8]) -> Result<()> { ..= }
[INFO] [stdout]    |                                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0586]: inclusive range with no end
[INFO] [stdout]   --> src/main.rs:21:61
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn write_all(&mut self, buf: &[u8]) -> Result<()> { ... }
[INFO] [stdout]    |                                                             ^^^ help: use `..` instead
[INFO] [stdout]    |
[INFO] [stdout]    = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-item in item list
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     trait Write {
[INFO] [stdout]    |                 - item list starts here
[INFO] [stdout] ...
[INFO] [stdout] 22 |         ...
[INFO] [stdout]    |         ^^^ non-item starts here
[INFO] [stdout] 23 |     }
[INFO] [stdout]    |     - item list ends here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: range-to patterns with `...` are not allowed
[INFO] [stdout]   --> src/main.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut...
[INFO] [stdout]    |            ^^^ help: use `..=` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `mut` must be followed by a named binding
[INFO] [stdout]   --> src/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |       let mut...
[INFO] [stdout]    |  _________^
[INFO] [stdout] 83 | |     buf.write...
[INFO] [stdout]    | |_______^ help: remove the `mut` prefix: `..=buf`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `mut` may be followed by `variable` and `variable @ pattern`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `::`, `:`, `;`, `=`, or `|`, found `.`
[INFO] [stdout]   --> src/main.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     buf.write...
[INFO] [stdout]    |        ^ expected one of `::`, `:`, `;`, `=`, or `|`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0255]: the name `Write` is defined multiple times
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     trait Write {
[INFO] [stdout]    |     ----------- previous definition of the trait `Write` here
[INFO] [stdout] ...
[INFO] [stdout] 28 |     use std::io::Write;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ `Write` reimported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Write` must be defined only once in the type namespace of this block
[INFO] [stdout] help: you can use `as` to change the binding name of the import
[INFO] [stdout]    |
[INFO] [stdout] 28 |     use std::io::Write as OtherWrite;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0255]: the name `Write` is defined multiple times
[INFO] [stdout]   --> src/main.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     trait Write {
[INFO] [stdout]    |     ----------- previous definition of the trait `Write` here
[INFO] [stdout] ...
[INFO] [stdout] 80 |     use std::io::Write;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ `Write` reimported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Write` must be defined only once in the type namespace of this block
[INFO] [stdout] help: you can use `as` to change the binding name of the import
[INFO] [stdout]    |
[INFO] [stdout] 80 |     use std::io::Write as OtherWrite;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: half-open range patterns are unstable
[INFO] [stdout]   --> src/main.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 |       let mut...
[INFO] [stdout]    |  ____________^
[INFO] [stdout] 83 | |     buf.write...
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #67264 <https://github.com/rust-lang/rust/issues/67264> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     use std::io::Write;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:30:28
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn say_hello(out: &mut Write) -> std::io::Result<()> {
[INFO] [stdout]    |                            ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]   --> src/main.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     use std::io::Write;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this enum takes 2 generic arguments but 1 generic argument was supplied
[INFO] [stdout]    --> src/main.rs:18:44
[INFO] [stdout]     |
[INFO] [stdout] 18  |         fn write(&mut self, buf: &[u8]) -> Result<usize>;
[INFO] [stdout]     |                                            ^^^^^^ ----- supplied 1 generic argument
[INFO] [stdout]     |                                            |
[INFO] [stdout]     |                                            expected 2 generic arguments
[INFO] [stdout]     |
[INFO] [stdout] note: enum defined here, with 2 generic parameters: `T`, `E`
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]     |
[INFO] [stdout] 18  |         fn write(&mut self, buf: &[u8]) -> Result<usize, E>;
[INFO] [stdout]     |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this enum takes 2 generic arguments but 1 generic argument was supplied
[INFO] [stdout]    --> src/main.rs:19:32
[INFO] [stdout]     |
[INFO] [stdout] 19  |         fn flush(&mut self) -> Result<()>;
[INFO] [stdout]     |                                ^^^^^^ -- supplied 1 generic argument
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                expected 2 generic arguments
[INFO] [stdout]     |
[INFO] [stdout] note: enum defined here, with 2 generic parameters: `T`, `E`
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]     |
[INFO] [stdout] 19  |         fn flush(&mut self) -> Result<(), E>;
[INFO] [stdout]     |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this enum takes 2 generic arguments but 1 generic argument was supplied
[INFO] [stdout]    --> src/main.rs:21:48
[INFO] [stdout]     |
[INFO] [stdout] 21  |         fn write_all(&mut self, buf: &[u8]) -> Result<()> { ... }
[INFO] [stdout]     |                                                ^^^^^^ -- supplied 1 generic argument
[INFO] [stdout]     |                                                |
[INFO] [stdout]     |                                                expected 2 generic arguments
[INFO] [stdout]     |
[INFO] [stdout] note: enum defined here, with 2 generic parameters: `T`, `E`
[INFO] [stdout] help: add missing generic argument
[INFO] [stdout]     |
[INFO] [stdout] 21  |         fn write_all(&mut self, buf: &[u8]) -> Result<(), E> { ... }
[INFO] [stdout]     |                                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0107, E0255, E0586, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0107`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `traits_generics`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "be5d9548717e09e0588cdf28c2e495e41480e2d859677ff9938775bb9b537e00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be5d9548717e09e0588cdf28c2e495e41480e2d859677ff9938775bb9b537e00", kill_on_drop: false }`
[INFO] [stdout] be5d9548717e09e0588cdf28c2e495e41480e2d859677ff9938775bb9b537e00
