[INFO] crate acon 0.5.1 is already in cache
[INFO] testing acon-0.5.1 against 1.44.0 for beta-1.45-1
[INFO] extracting crate acon 0.5.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate acon 0.5.1 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate acon 0.5.1
[INFO] finished tweaking crates.io crate acon 0.5.1
[INFO] tweaked toml for crates.io crate acon 0.5.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] ec0569180e3df6a4314d917c88a01de6bd6b715de1022990485e02def67e8cee
[INFO] running `"docker" "start" "-a" "ec0569180e3df6a4314d917c88a01de6bd6b715de1022990485e02def67e8cee"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling acon v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]    --> src/lib.rs:110:1
[INFO] [stderr]     |
[INFO] [stderr] 110 | #![feature(test)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:307:6
[INFO] [stderr]     |
[INFO] [stderr] 307 |                     try!(recurse(key, value, f, 0));
[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/lib.rs:321:6
[INFO] [stderr]     |
[INFO] [stderr] 321 |                     try!(f.write_str(&indent));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 331 |                     wrt!("[ ", key, "\n");
[INFO] [stderr]     |                     ---------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:322:8
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] ...
[INFO] [stderr] 331 |                     wrt!("[ ", key, "\n");
[INFO] [stderr]     |                     ---------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:333:7
[INFO] [stderr]     |
[INFO] [stderr] 333 |                         try!(recurse("", value, f, depth + 1));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:327:13
[INFO] [stderr]     |
[INFO] [stderr] 327 |                 () => { try!(f.write_str("\n")); }
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 335 |                     nl!();
[INFO] [stderr]     |                     ------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:321:6
[INFO] [stderr]     |
[INFO] [stderr] 321 |                     try!(f.write_str(&indent));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 336 |                     wrt!("]\n");
[INFO] [stderr]     |                     ------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:322:8
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] ...
[INFO] [stderr] 336 |                     wrt!("]\n");
[INFO] [stderr]     |                     ------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:321:6
[INFO] [stderr]     |
[INFO] [stderr] 321 |                     try!(f.write_str(&indent));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 339 |                     wrt!(key, " ", string, "\n");
[INFO] [stderr]     |                     ----------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:322:8
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] ...
[INFO] [stderr] 339 |                     wrt!(key, " ", string, "\n");
[INFO] [stderr]     |                     ----------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:321:6
[INFO] [stderr]     |
[INFO] [stderr] 321 |                     try!(f.write_str(&indent));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 342 |                     wrt!("{ ", key, "\n");
[INFO] [stderr]     |                     ---------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:322:8
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] ...
[INFO] [stderr] 342 |                     wrt!("{ ", key, "\n");
[INFO] [stderr]     |                     ---------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:344:7
[INFO] [stderr]     |
[INFO] [stderr] 344 |                         try!(recurse(key, value, f, depth + 1));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:327:13
[INFO] [stderr]     |
[INFO] [stderr] 327 |                 () => { try!(f.write_str("\n")); }
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 346 |                     nl!();
[INFO] [stderr]     |                     ------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:321:6
[INFO] [stderr]     |
[INFO] [stderr] 321 |                     try!(f.write_str(&indent));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 347 |                     wrt!("}\n");
[INFO] [stderr]     |                     ------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:322:8
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] ...
[INFO] [stderr] 347 |                     wrt!("}\n");
[INFO] [stderr]     |                     ------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:393:35
[INFO] [stderr]     |
[INFO] [stderr] 393 |                     word @ "}" | word @ "]" => { try!(close_array_or_table(word, &mut stack, current_line)); continue; }
[INFO] [stderr]     |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:394:15
[INFO] [stderr]     |
[INFO] [stderr] 394 |                     "$" => { try!(close_all_nestings(&mut stack, current_line)); continue; }
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:407:12
[INFO] [stderr]     |
[INFO] [stderr] 407 |                         => { try!(append_entry_to_top_table(table, &first, &mut words, current_line)); }
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `acon`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ec0569180e3df6a4314d917c88a01de6bd6b715de1022990485e02def67e8cee"`
[INFO] running `"docker" "rm" "-f" "ec0569180e3df6a4314d917c88a01de6bd6b715de1022990485e02def67e8cee"`
[INFO] [stdout] ec0569180e3df6a4314d917c88a01de6bd6b715de1022990485e02def67e8cee