[INFO] cloning repository https://github.com/micxjo/rust-synacor-challenge
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/micxjo/rust-synacor-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmicxjo%2Frust-synacor-challenge"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmicxjo%2Frust-synacor-challenge'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1af2ddd8bc6c770610adfe05def9ba03c118ac6f
[INFO] checking micxjo/rust-synacor-challenge against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmicxjo%2Frust-synacor-challenge" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/micxjo/rust-synacor-challenge on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/micxjo/rust-synacor-challenge
[INFO] finished tweaking git repo https://github.com/micxjo/rust-synacor-challenge
[INFO] tweaked toml for git repo https://github.com/micxjo/rust-synacor-challenge written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/micxjo/rust-synacor-challenge already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 59067629bbcf9ae5ba651dab81945c2caf5c2c986693458ceb06c8f7f990ac5f
[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" "59067629bbcf9ae5ba651dab81945c2caf5c2c986693458ceb06c8f7f990ac5f"`
[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/lib.rs:63:24
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut file = try!(File::open(path));
[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:65:20
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let read = try!(file.read_to_end(&mut buf));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:63:24
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut file = try!(File::open(path));
[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:65:20
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let read = try!(file.read_to_end(&mut buf));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `"docker" "inspect" "59067629bbcf9ae5ba651dab81945c2caf5c2c986693458ceb06c8f7f990ac5f"`
[INFO] running `"docker" "rm" "-f" "59067629bbcf9ae5ba651dab81945c2caf5c2c986693458ceb06c8f7f990ac5f"`
[INFO] [stdout] 59067629bbcf9ae5ba651dab81945c2caf5c2c986693458ceb06c8f7f990ac5f