[INFO] updating cached repository https://github.com/alex34567/synacor-challenge
[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] 5a0f64456a63c24c78c9f83a4e763f0d17dd9082
[INFO] checking alex34567/synacor-challenge against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falex34567%2Fsynacor-challenge" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alex34567/synacor-challenge on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/alex34567/synacor-challenge
[INFO] finished tweaking git repo https://github.com/alex34567/synacor-challenge
[INFO] tweaked toml for git repo https://github.com/alex34567/synacor-challenge written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/alex34567/synacor-challenge already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f956643f4553e076b94cce0d12c6afcd1d0be51d83033944c925db6c7b5c4b25
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "f956643f4553e076b94cce0d12c6afcd1d0be51d83033944c925db6c7b5c4b25"`
[INFO] [stderr]     Checking synacor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:92:28
[INFO] [stderr]    |
[INFO] [stderr] 92 |                 let word = try!(self.read_word_data(word_loc));
[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/main.rs:97:28
[INFO] [stderr]    |
[INFO] [stderr] 97 |                 let word = try!(self.read_word_data(location));
[INFO] [stderr]    |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:104:21
[INFO] [stderr]     |
[INFO] [stderr] 104 |                     try!(self.write_word_data(location, word));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:114:20
[INFO] [stderr]     |
[INFO] [stderr] 114 |                 if try!(self.read_word_data(location_b)) == try!(self.read_word_data(location_c)) {
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:114:61
[INFO] [stderr]     |
[INFO] [stderr] 114 |                 if try!(self.read_word_data(location_b)) == try!(self.read_word_data(location_c)) {
[INFO] [stderr]     |                                                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:124:20
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 if try!(self.read_word_data(location_b)) > try!(self.read_word_data(location_c)) {
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:124:60
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 if try!(self.read_word_data(location_b)) > try!(self.read_word_data(location_c)) {
[INFO] [stderr]     |                                                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:132:28
[INFO] [stderr]     |
[INFO] [stderr] 132 |                 let jump = try!(self.read_word_data(location));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:138:28
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 let test = try!(self.read_word_data(test_loc));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:141:32
[INFO] [stderr]     |
[INFO] [stderr] 141 |                     let jump = try!(self.read_word_data(jump_loc));
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:150:28
[INFO] [stderr]     |
[INFO] [stderr] 150 |                 let test = try!(self.read_word_data(test_loc));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:153:32
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     let jump = try!(self.read_word_data(jump_loc));
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:164:25
[INFO] [stderr]     |
[INFO] [stderr] 164 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:165:25
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 let c = try!(self.read_word_data(location_c));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:174:25
[INFO] [stderr]     |
[INFO] [stderr] 174 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:175:25
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 let c = try!(self.read_word_data(location_c));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:184:25
[INFO] [stderr]     |
[INFO] [stderr] 184 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:185:25
[INFO] [stderr]     |
[INFO] [stderr] 185 |                 let c = try!(self.read_word_data(location_c));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:194:25
[INFO] [stderr]     |
[INFO] [stderr] 194 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:195:25
[INFO] [stderr]     |
[INFO] [stderr] 195 |                 let c = try!(self.read_word_data(location_c));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:203:25
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:204:25
[INFO] [stderr]     |
[INFO] [stderr] 204 |                 let c = try!(self.read_word_data(location_c));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:211:25
[INFO] [stderr]     |
[INFO] [stderr] 211 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:218:25
[INFO] [stderr]     |
[INFO] [stderr] 218 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:225:25
[INFO] [stderr]     |
[INFO] [stderr] 225 |                 let a = try!(self.read_word_data(location_a));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:226:25
[INFO] [stderr]     |
[INFO] [stderr] 226 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:232:25
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 let a = try!(self.read_word_data(location_a));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:247:28
[INFO] [stderr]     |
[INFO] [stderr] 247 |                 let char = try!(self.read_word_data(location)) as u8 as char;
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:252:17
[INFO] [stderr]     |
[INFO] [stderr] 252 |                 ;
[INFO] [stderr]     |                 ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:92:28
[INFO] [stderr]    |
[INFO] [stderr] 92 |                 let word = try!(self.read_word_data(word_loc));
[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/main.rs:97:28
[INFO] [stderr]    |
[INFO] [stderr] 97 |                 let word = try!(self.read_word_data(location));
[INFO] [stderr]    |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:104:21
[INFO] [stderr]     |
[INFO] [stderr] 104 |                     try!(self.write_word_data(location, word));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:114:20
[INFO] [stderr]     |
[INFO] [stderr] 114 |                 if try!(self.read_word_data(location_b)) == try!(self.read_word_data(location_c)) {
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:114:61
[INFO] [stderr]     |
[INFO] [stderr] 114 |                 if try!(self.read_word_data(location_b)) == try!(self.read_word_data(location_c)) {
[INFO] [stderr]     |                                                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:124:20
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 if try!(self.read_word_data(location_b)) > try!(self.read_word_data(location_c)) {
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:124:60
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 if try!(self.read_word_data(location_b)) > try!(self.read_word_data(location_c)) {
[INFO] [stderr]     |                                                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:132:28
[INFO] [stderr]     |
[INFO] [stderr] 132 |                 let jump = try!(self.read_word_data(location));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:138:28
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 let test = try!(self.read_word_data(test_loc));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:141:32
[INFO] [stderr]     |
[INFO] [stderr] 141 |                     let jump = try!(self.read_word_data(jump_loc));
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:150:28
[INFO] [stderr]     |
[INFO] [stderr] 150 |                 let test = try!(self.read_word_data(test_loc));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:153:32
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     let jump = try!(self.read_word_data(jump_loc));
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:164:25
[INFO] [stderr]     |
[INFO] [stderr] 164 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:165:25
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 let c = try!(self.read_word_data(location_c));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:174:25
[INFO] [stderr]     |
[INFO] [stderr] 174 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:175:25
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 let c = try!(self.read_word_data(location_c));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:184:25
[INFO] [stderr]     |
[INFO] [stderr] 184 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:185:25
[INFO] [stderr]     |
[INFO] [stderr] 185 |                 let c = try!(self.read_word_data(location_c));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:194:25
[INFO] [stderr]     |
[INFO] [stderr] 194 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:195:25
[INFO] [stderr]     |
[INFO] [stderr] 195 |                 let c = try!(self.read_word_data(location_c));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:203:25
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:204:25
[INFO] [stderr]     |
[INFO] [stderr] 204 |                 let c = try!(self.read_word_data(location_c));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:211:25
[INFO] [stderr]     |
[INFO] [stderr] 211 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:218:25
[INFO] [stderr]     |
[INFO] [stderr] 218 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:225:25
[INFO] [stderr]     |
[INFO] [stderr] 225 |                 let a = try!(self.read_word_data(location_a));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:226:25
[INFO] [stderr]     |
[INFO] [stderr] 226 |                 let b = try!(self.read_word_data(location_b));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:232:25
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 let a = try!(self.read_word_data(location_a));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:247:28
[INFO] [stderr]     |
[INFO] [stderr] 247 |                 let char = try!(self.read_word_data(location)) as u8 as char;
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:252:17
[INFO] [stderr]     |
[INFO] [stderr] 252 |                 ;
[INFO] [stderr]     |                 ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 29 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 29 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `"docker" "inspect" "f956643f4553e076b94cce0d12c6afcd1d0be51d83033944c925db6c7b5c4b25"`
[INFO] running `"docker" "rm" "-f" "f956643f4553e076b94cce0d12c6afcd1d0be51d83033944c925db6c7b5c4b25"`
[INFO] [stdout] f956643f4553e076b94cce0d12c6afcd1d0be51d83033944c925db6c7b5c4b25