[INFO] updating cached repository https://github.com/mohanrajendran/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] 02cdd7f2ac574e7d034483440ec1537014d7f04e
[INFO] testing mohanrajendran/synacor-challenge against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohanrajendran%2Fsynacor-challenge" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mohanrajendran/synacor-challenge on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mohanrajendran/synacor-challenge
[INFO] finished tweaking git repo https://github.com/mohanrajendran/synacor-challenge
[INFO] tweaked toml for git repo https://github.com/mohanrajendran/synacor-challenge written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/mohanrajendran/synacor-challenge already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] 34e16d922dff1cbbe90373116e1d78cd16a5d7d4f36d93e036489acca1570f0d
[INFO] running `"docker" "start" "-a" "34e16d922dff1cbbe90373116e1d78cd16a5d7d4f36d93e036489acca1570f0d"`
[INFO] [stderr]    Compiling synacor-vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/main.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut f = try!(File::open(file_name.to_string()));
[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:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let size = try!(f.read_to_end(&mut buffer))/2;
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "34e16d922dff1cbbe90373116e1d78cd16a5d7d4f36d93e036489acca1570f0d"`
[INFO] running `"docker" "rm" "-f" "34e16d922dff1cbbe90373116e1d78cd16a5d7d4f36d93e036489acca1570f0d"`
[INFO] [stdout] 34e16d922dff1cbbe90373116e1d78cd16a5d7d4f36d93e036489acca1570f0d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b471918da1a542e3c6a672c492d08afd2f7d091f56911a995ac8b41f11888794
[INFO] running `"docker" "start" "-a" "b471918da1a542e3c6a672c492d08afd2f7d091f56911a995ac8b41f11888794"`
[INFO] [stderr]    Compiling synacor-vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/main.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut f = try!(File::open(file_name.to_string()));
[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:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let size = try!(f.read_to_end(&mut buffer))/2;
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "b471918da1a542e3c6a672c492d08afd2f7d091f56911a995ac8b41f11888794"`
[INFO] running `"docker" "rm" "-f" "b471918da1a542e3c6a672c492d08afd2f7d091f56911a995ac8b41f11888794"`
[INFO] [stdout] b471918da1a542e3c6a672c492d08afd2f7d091f56911a995ac8b41f11888794
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7bb2592c524c9c6a44b0410c5cdfabf1036b9f2c710ccf1632f0590063a1467c
[INFO] running `"docker" "start" "-a" "7bb2592c524c9c6a44b0410c5cdfabf1036b9f2c710ccf1632f0590063a1467c"`
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/main.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut f = try!(File::open(file_name.to_string()));
[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:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let size = try!(f.read_to_end(&mut buffer))/2;
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/synacor_vm-b2d7eef7e4b6a067
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7bb2592c524c9c6a44b0410c5cdfabf1036b9f2c710ccf1632f0590063a1467c"`
[INFO] running `"docker" "rm" "-f" "7bb2592c524c9c6a44b0410c5cdfabf1036b9f2c710ccf1632f0590063a1467c"`
[INFO] [stdout] 7bb2592c524c9c6a44b0410c5cdfabf1036b9f2c710ccf1632f0590063a1467c