[INFO] updating cached repository PlasmaPower/random-walk
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PlasmaPower/random-walk
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PlasmaPower/random-walk" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/PlasmaPower/random-walk"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/PlasmaPower/random-walk'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PlasmaPower/random-walk" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/PlasmaPower/random-walk"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/PlasmaPower/random-walk'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4c3be3cb2aee6f580185c50dbbc60c3aabe38750
[INFO] sha for GitHub repo PlasmaPower/random-walk: 4c3be3cb2aee6f580185c50dbbc60c3aabe38750
[INFO] validating manifest of PlasmaPower/random-walk on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of PlasmaPower/random-walk on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing PlasmaPower/random-walk
[INFO] finished frobbing PlasmaPower/random-walk
[INFO] frobbed toml for PlasmaPower/random-walk written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/PlasmaPower/random-walk/Cargo.toml
[INFO] started frobbing PlasmaPower/random-walk
[INFO] finished frobbing PlasmaPower/random-walk
[INFO] frobbed toml for PlasmaPower/random-walk written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/PlasmaPower/random-walk/Cargo.toml
[INFO] crate PlasmaPower/random-walk already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking PlasmaPower/random-walk against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-1/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/PlasmaPower/random-walk:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2b3aaeb33e975071208848c805184982f68239fc9dae89a37301e11293034fec
[INFO] running `"docker" "start" "-a" "2b3aaeb33e975071208848c805184982f68239fc9dae89a37301e11293034fec"`
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking clap v2.24.2
[INFO] [stderr]     Checking random-walk v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:51:30
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn random_walk(mut rng: &mut Rng, starting_room: &Room) -> u8 {
[INFO] [stderr]    |                              ^^^ help: use `dyn`: `dyn Rng`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | / lazy_static! {
[INFO] [stderr] 39 | |     static ref ROOMS: HashMap<&'static str, Room> = {
[INFO] [stderr] 40 | |         let mut map = HashMap::new();
[INFO] [stderr] 41 | |         map.insert("A", Room::new(vec!["F", "D"]));
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |     };
[INFO] [stderr] 49 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | / lazy_static! {
[INFO] [stderr] 39 | |     static ref ROOMS: HashMap<&'static str, Room> = {
[INFO] [stderr] 40 | |         let mut map = HashMap::new();
[INFO] [stderr] 41 | |         map.insert("A", Room::new(vec!["F", "D"]));
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |     };
[INFO] [stderr] 49 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:51:30
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn random_walk(mut rng: &mut Rng, starting_room: &Room) -> u8 {
[INFO] [stderr]    |                              ^^^ help: use `dyn`: `dyn Rng`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | / lazy_static! {
[INFO] [stderr] 39 | |     static ref ROOMS: HashMap<&'static str, Room> = {
[INFO] [stderr] 40 | |         let mut map = HashMap::new();
[INFO] [stderr] 41 | |         map.insert("A", Room::new(vec!["F", "D"]));
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |     };
[INFO] [stderr] 49 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | / lazy_static! {
[INFO] [stderr] 39 | |     static ref ROOMS: HashMap<&'static str, Room> = {
[INFO] [stderr] 40 | |         let mut map = HashMap::new();
[INFO] [stderr] 41 | |         map.insert("A", Room::new(vec!["F", "D"]));
[INFO] [stderr] ...  |
[INFO] [stderr] 48 | |     };
[INFO] [stderr] 49 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.85s
[INFO] running `"docker" "inspect" "2b3aaeb33e975071208848c805184982f68239fc9dae89a37301e11293034fec"`
[INFO] running `"docker" "rm" "-f" "2b3aaeb33e975071208848c805184982f68239fc9dae89a37301e11293034fec"`
[INFO] [stdout] 2b3aaeb33e975071208848c805184982f68239fc9dae89a37301e11293034fec