[INFO] fetching crate acon 0.5.1...
[INFO] checking acon-0.5.1 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate acon 0.5.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate acon 0.5.1 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96d0dd482da68ee115b543b80ff5a8d438e161b3a4de2efd2d7a4aad4cf7c162
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "96d0dd482da68ee115b543b80ff5a8d438e161b3a4de2efd2d7a4aad4cf7c162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96d0dd482da68ee115b543b80ff5a8d438e161b3a4de2efd2d7a4aad4cf7c162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96d0dd482da68ee115b543b80ff5a8d438e161b3a4de2efd2d7a4aad4cf7c162", kill_on_drop: false }`
[INFO] [stdout] 96d0dd482da68ee115b543b80ff5a8d438e161b3a4de2efd2d7a4aad4cf7c162
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 922637d9c4b0e87f4fd67f0c3d2ef9477c8ef8aadfe83d19c0d168ca52afda8c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "922637d9c4b0e87f4fd67f0c3d2ef9477c8ef8aadfe83d19c0d168ca52afda8c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking acon v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:307:6
[INFO] [stdout]     |
[INFO] [stdout] 307 |                     try!(recurse(key, value, f, 0));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:321:6
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     try!(f.write_str(&indent));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 331 |                     wrt!("[ ", key, "\n");
[INFO] [stdout]     |                     ---------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] ...
[INFO] [stdout] 331 |                     wrt!("[ ", key, "\n");
[INFO] [stdout]     |                     ---------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:333:7
[INFO] [stdout]     |
[INFO] [stdout] 333 |                         try!(recurse("", value, f, depth + 1));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:327:13
[INFO] [stdout]     |
[INFO] [stdout] 327 |                 () => { try!(f.write_str("\n")); }
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 335 |                     nl!();
[INFO] [stdout]     |                     ------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:321:6
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     try!(f.write_str(&indent));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 336 |                     wrt!("]\n");
[INFO] [stdout]     |                     ------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] ...
[INFO] [stdout] 336 |                     wrt!("]\n");
[INFO] [stdout]     |                     ------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:321:6
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     try!(f.write_str(&indent));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 339 |                     wrt!(key, " ", string, "\n");
[INFO] [stdout]     |                     ----------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] ...
[INFO] [stdout] 339 |                     wrt!(key, " ", string, "\n");
[INFO] [stdout]     |                     ----------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:321:6
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     try!(f.write_str(&indent));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 342 |                     wrt!("{ ", key, "\n");
[INFO] [stdout]     |                     ---------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] ...
[INFO] [stdout] 342 |                     wrt!("{ ", key, "\n");
[INFO] [stdout]     |                     ---------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:344:7
[INFO] [stdout]     |
[INFO] [stdout] 344 |                         try!(recurse(key, value, f, depth + 1));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:327:13
[INFO] [stdout]     |
[INFO] [stdout] 327 |                 () => { try!(f.write_str("\n")); }
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 346 |                     nl!();
[INFO] [stdout]     |                     ------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:321:6
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     try!(f.write_str(&indent));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 347 |                     wrt!("}\n");
[INFO] [stdout]     |                     ------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] ...
[INFO] [stdout] 347 |                     wrt!("}\n");
[INFO] [stdout]     |                     ------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:393:35
[INFO] [stdout]     |
[INFO] [stdout] 393 |                     word @ "}" | word @ "]" => { try!(close_array_or_table(word, &mut stack, current_line)); continue; }
[INFO] [stdout]     |                                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:394:15
[INFO] [stdout]     |
[INFO] [stdout] 394 |                     "$" => { try!(close_all_nestings(&mut stack, current_line)); continue; }
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:407:12
[INFO] [stdout]     |
[INFO] [stdout] 407 |                         => { try!(append_entry_to_top_table(table, &first, &mut words, current_line)); }
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:307:6
[INFO] [stdout]     |
[INFO] [stdout] 307 |                     try!(recurse(key, value, f, 0));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:321:6
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     try!(f.write_str(&indent));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 331 |                     wrt!("[ ", key, "\n");
[INFO] [stdout]     |                     ---------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] ...
[INFO] [stdout] 331 |                     wrt!("[ ", key, "\n");
[INFO] [stdout]     |                     ---------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:333:7
[INFO] [stdout]     |
[INFO] [stdout] 333 |                         try!(recurse("", value, f, depth + 1));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:327:13
[INFO] [stdout]     |
[INFO] [stdout] 327 |                 () => { try!(f.write_str("\n")); }
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 335 |                     nl!();
[INFO] [stdout]     |                     ------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:321:6
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     try!(f.write_str(&indent));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 336 |                     wrt!("]\n");
[INFO] [stdout]     |                     ------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] ...
[INFO] [stdout] 336 |                     wrt!("]\n");
[INFO] [stdout]     |                     ------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:321:6
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     try!(f.write_str(&indent));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 339 |                     wrt!(key, " ", string, "\n");
[INFO] [stdout]     |                     ----------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] ...
[INFO] [stdout] 339 |                     wrt!(key, " ", string, "\n");
[INFO] [stdout]     |                     ----------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:321:6
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     try!(f.write_str(&indent));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 342 |                     wrt!("{ ", key, "\n");
[INFO] [stdout]     |                     ---------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] ...
[INFO] [stdout] 342 |                     wrt!("{ ", key, "\n");
[INFO] [stdout]     |                     ---------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:344:7
[INFO] [stdout]     |
[INFO] [stdout] 344 |                         try!(recurse(key, value, f, depth + 1));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:327:13
[INFO] [stdout]     |
[INFO] [stdout] 327 |                 () => { try!(f.write_str("\n")); }
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 346 |                     nl!();
[INFO] [stdout]     |                     ------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:321:6
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     try!(f.write_str(&indent));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 347 |                     wrt!("}\n");
[INFO] [stdout]     |                     ------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |                     $(try!(f.write_str($x));)*
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] ...
[INFO] [stdout] 347 |                     wrt!("}\n");
[INFO] [stdout]     |                     ------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:393:35
[INFO] [stdout]     |
[INFO] [stdout] 393 |                     word @ "}" | word @ "]" => { try!(close_array_or_table(word, &mut stack, current_line)); continue; }
[INFO] [stdout]     |                                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:394:15
[INFO] [stdout]     |
[INFO] [stdout] 394 |                     "$" => { try!(close_all_nestings(&mut stack, current_line)); continue; }
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:407:12
[INFO] [stdout]     |
[INFO] [stdout] 407 |                         => { try!(append_entry_to_top_table(table, &first, &mut words, current_line)); }
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "922637d9c4b0e87f4fd67f0c3d2ef9477c8ef8aadfe83d19c0d168ca52afda8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "922637d9c4b0e87f4fd67f0c3d2ef9477c8ef8aadfe83d19c0d168ca52afda8c", kill_on_drop: false }`
[INFO] [stdout] 922637d9c4b0e87f4fd67f0c3d2ef9477c8ef8aadfe83d19c0d168ca52afda8c