[INFO] updating cached repository meneriaz/palaver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/meneriaz/palaver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/meneriaz/palaver" "work/ex/beta-1.38-1/sources/1.37.0/gh/meneriaz/palaver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/meneriaz/palaver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/meneriaz/palaver" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/meneriaz/palaver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/meneriaz/palaver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fa78e2d7fd787d142b1d9ef8cd9302d631eae53b
[INFO] sha for GitHub repo meneriaz/palaver: fa78e2d7fd787d142b1d9ef8cd9302d631eae53b
[INFO] validating manifest of meneriaz/palaver 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 meneriaz/palaver 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 meneriaz/palaver
[INFO] finished frobbing meneriaz/palaver
[INFO] frobbed toml for meneriaz/palaver written to work/ex/beta-1.38-1/sources/1.37.0/gh/meneriaz/palaver/Cargo.toml
[INFO] started frobbing meneriaz/palaver
[INFO] finished frobbing meneriaz/palaver
[INFO] frobbed toml for meneriaz/palaver written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/meneriaz/palaver/Cargo.toml
[INFO] crate meneriaz/palaver 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 meneriaz/palaver against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/meneriaz/palaver:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] aed663aac5b7544fd615da27926d0c168cb8667ec96c8f0fc0a171eef0409cbe
[INFO] running `"docker" "start" "-a" "aed663aac5b7544fd615da27926d0c168cb8667ec96c8f0fc0a171eef0409cbe"`
[INFO] [stderr]    Compiling palaver v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error: expected one of `)`, `,`, `.`, `?`, or an operator, found `{`
[INFO] [stderr]   --> src/connection.rs:37:39
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let future = Future::spawn(proc() {
[INFO] [stderr]    |                                       ^ expected one of `)`, `,`, `.`, `?`, or an operator here
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![experimental]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]  --> src/connection.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![experimental]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved imports `std::io::BufferedReader`, `std::io::BufferedWriter`
[INFO] [stderr]  --> src/connection.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{BufferedReader, BufferedWriter};
[INFO] [stderr]   |               ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^ no `BufferedWriter` in `io`
[INFO] [stderr]   |               |
[INFO] [stderr]   |               no `BufferedReader` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved imports `std::io::IoResult`, `std::io::TcpStream`
[INFO] [stderr]  --> src/connection.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{IoResult, TcpStream};
[INFO] [stderr]   |               ^^^^^^^^  ^^^^^^^^^ no `TcpStream` in `io`
[INFO] [stderr]   |               |
[INFO] [stderr]   |               no `IoResult` in `io`
[INFO] [stderr]   |               help: a similar name exists in the module: `Result`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::sync::Future`
[INFO] [stderr]  --> src/connection.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::sync::Future;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ no `Future` in `sync`
[INFO] [stderr] 
[INFO] [stderr] error: cannot find attribute macro `experimental` in this scope
[INFO] [stderr]  --> src/main.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![experimental]
[INFO] [stderr]   |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find attribute macro `experimental` in this scope
[INFO] [stderr]  --> src/connection.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![experimental]
[INFO] [stderr]   |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `select!` in this scope
[INFO] [stderr]   --> src/main.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         select! {
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Receiver` in this scope
[INFO] [stderr]  --> src/connection.rs:7:20
[INFO] [stderr]   |
[INFO] [stderr] 7 | type Connection = (Receiver<Vec<u8>>,
[INFO] [stderr]   |                    ^^^^^^^^ not found in this scope
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::Receiver;
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::mpsc::Receiver;
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Writer` in this scope
[INFO] [stderr]   --> src/connection.rs:16:16
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn send<T: Writer>(w: &mut T, messages: &[Message]) -> IoResult<()> {
[INFO] [stderr]    |                ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `channel` in this scope
[INFO] [stderr]   --> src/connection.rs:29:20
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let (tx, rx) = channel();
[INFO] [stderr]    |                    ^^^^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::sync::mpsc::channel;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `proc` in this scope
[INFO] [stderr]   --> src/connection.rs:37:32
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let future = Future::spawn(proc() {
[INFO] [stderr]    |                                ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Writer` in this scope
[INFO] [stderr]   --> src/connection.rs:51:22
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn buffer_message<T: Writer>(w: &mut T, prefix: Option<&[u8]>, command: &[u8],
[INFO] [stderr]    |                      ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `args` in module `os`
[INFO] [stderr]   --> src/main.rs:10:20
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let args = os::args();
[INFO] [stderr]    |                    ^^^^ not found in `os`
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 3  | use std::env::args;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 15 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0405, E0412, E0425, E0432, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0405`.
[INFO] [stderr] error: Could not compile `palaver`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "aed663aac5b7544fd615da27926d0c168cb8667ec96c8f0fc0a171eef0409cbe"`
[INFO] running `"docker" "rm" "-f" "aed663aac5b7544fd615da27926d0c168cb8667ec96c8f0fc0a171eef0409cbe"`
[INFO] [stdout] aed663aac5b7544fd615da27926d0c168cb8667ec96c8f0fc0a171eef0409cbe