[INFO] updating cached repository https://github.com/Peternator7/cracker-barrel-rust
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c745de53d1a7e569c0bf536d5363019b428b2084
[INFO] checking Peternator7/cracker-barrel-rust against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeternator7%2Fcracker-barrel-rust" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Peternator7/cracker-barrel-rust on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Peternator7/cracker-barrel-rust
[INFO] finished tweaking git repo https://github.com/Peternator7/cracker-barrel-rust
[INFO] tweaked toml for git repo https://github.com/Peternator7/cracker-barrel-rust written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/Peternator7/cracker-barrel-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3aaceef73a4810aea57551f4b11b5b198070942b46fed6dff0ad268d44b3693
[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" "c3aaceef73a4810aea57551f4b11b5b198070942b46fed6dff0ad268d44b3693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3aaceef73a4810aea57551f4b11b5b198070942b46fed6dff0ad268d44b3693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3aaceef73a4810aea57551f4b11b5b198070942b46fed6dff0ad268d44b3693", kill_on_drop: false }`
[INFO] [stdout] c3aaceef73a4810aea57551f4b11b5b198070942b46fed6dff0ad268d44b3693
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f78a9cfb7183b8a2047260f3425daf8a4b45b61a15cd9af2f8a17b610fe8dda
[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" "4f78a9cfb7183b8a2047260f3425daf8a4b45b61a15cd9af2f8a17b610fe8dda", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking triangle_problem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:202:17
[INFO] [stdout]     |
[INFO] [stdout] 202 |                 try!(write!(f, "  "));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:207:21
[INFO] [stdout]     |
[INFO] [stdout] 207 |                     try!(write!(f,"[{: >#2}] ",id));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:209:21
[INFO] [stdout]     |
[INFO] [stdout] 209 |                     try!(write!(f,"[  ] "));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |             try!(writeln!(f,""));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `c` should have an upper case name
[INFO] [stdout]   --> src/graph.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | static c: Option<Piece> = None;
[INFO] [stdout]    |        ^ help: convert the identifier to upper case (notice the capitalization): `C`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:202:17
[INFO] [stdout]     |
[INFO] [stdout] 202 |                 try!(write!(f, "  "));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:207:21
[INFO] [stdout]     |
[INFO] [stdout] 207 |                     try!(write!(f,"[{: >#2}] ",id));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:209:21
[INFO] [stdout]     |
[INFO] [stdout] 209 |                     try!(write!(f,"[  ] "));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |             try!(writeln!(f,""));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `c` should have an upper case name
[INFO] [stdout]   --> src/graph.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | static c: Option<Piece> = None;
[INFO] [stdout]    |        ^ help: convert the identifier to upper case (notice the capitalization): `C`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "4f78a9cfb7183b8a2047260f3425daf8a4b45b61a15cd9af2f8a17b610fe8dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f78a9cfb7183b8a2047260f3425daf8a4b45b61a15cd9af2f8a17b610fe8dda", kill_on_drop: false }`
[INFO] [stdout] 4f78a9cfb7183b8a2047260f3425daf8a4b45b61a15cd9af2f8a17b610fe8dda