[INFO] updating cached repository https://github.com/meneriaz/palaver
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fa78e2d7fd787d142b1d9ef8cd9302d631eae53b
[INFO] testing meneriaz/palaver against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeneriaz%2Fpalaver" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/meneriaz/palaver on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/meneriaz/palaver
[INFO] finished tweaking git repo https://github.com/meneriaz/palaver
[INFO] tweaked toml for git repo https://github.com/meneriaz/palaver written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/meneriaz/palaver already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 30a40dbdbd1ec2347245e941ced3e38d27569ef9688bc5b73fb32713f175290e
[INFO] running `"docker" "start" "-a" "30a40dbdbd1ec2347245e941ced3e38d27569ef9688bc5b73fb32713f175290e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling palaver v0.0.1 (/opt/rustwide/workdir)
[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: see issue #54726 <https://github.com/rust-lang/rust/issues/54726> for more information
[INFO] [stderr] 
[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
[INFO] [stderr]    |                                      |
[INFO] [stderr]    |                                      help: missing `,`
[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 `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 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]   |
[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]    |
[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]    |
[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] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         try!(buffer_message(w, prefix, command, params));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:28:18
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let stream = try!(TcpStream::connect(host, port));
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:38:24
[INFO] [stderr]    |
[INFO] [stderr] 38 |         loop { tx.send(try!(reader.read_until(b'\n'))); }
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     try!(send(&mut stream_writer,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |             try!(w.write(p));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |             try!(w.write(b" "));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     try!(w.write(command));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |         try!(w.write(b" "));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |         try!(w.write(*param));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |             try!(w.write(b" :"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/connection.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |             try!(w.write(*param));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 13 previous errors; 11 warnings emitted
[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" "30a40dbdbd1ec2347245e941ced3e38d27569ef9688bc5b73fb32713f175290e"`
[INFO] running `"docker" "rm" "-f" "30a40dbdbd1ec2347245e941ced3e38d27569ef9688bc5b73fb32713f175290e"`
[INFO] [stdout] 30a40dbdbd1ec2347245e941ced3e38d27569ef9688bc5b73fb32713f175290e