[INFO] cloning repository https://github.com/Aidiakapi/advent_of_code_2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Aidiakapi/advent_of_code_2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAidiakapi%2Fadvent_of_code_2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAidiakapi%2Fadvent_of_code_2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e387ea9764cf3ca0ee1c2ffb010d0b0b2c0b8d5b
[INFO] testing Aidiakapi/advent_of_code_2019 against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAidiakapi%2Fadvent_of_code_2019" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Aidiakapi/advent_of_code_2019 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Aidiakapi/advent_of_code_2019
[INFO] finished tweaking git repo https://github.com/Aidiakapi/advent_of_code_2019
[INFO] tweaked toml for git repo https://github.com/Aidiakapi/advent_of_code_2019 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Aidiakapi/advent_of_code_2019 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.42
[INFO] [stderr]   Downloaded http v0.1.20
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.16
[INFO] [stderr]   Downloaded unicode-normalization v0.1.11
[INFO] [stderr]   Downloaded reqwest v0.9.22
[INFO] [stderr]   Downloaded syn v1.0.9
[INFO] [stderr]   Downloaded thiserror v1.0.6
[INFO] [stderr]   Downloaded thiserror-impl v1.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fb4953ef73fa5fedf34698b67805dba85bd0157795fb9358b0d998cc03977a8
[INFO] running `Command { std: "docker" "start" "-a" "9fb4953ef73fa5fedf34698b67805dba85bd0157795fb9358b0d998cc03977a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fb4953ef73fa5fedf34698b67805dba85bd0157795fb9358b0d998cc03977a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fb4953ef73fa5fedf34698b67805dba85bd0157795fb9358b0d998cc03977a8", kill_on_drop: false }`
[INFO] [stdout] 9fb4953ef73fa5fedf34698b67805dba85bd0157795fb9358b0d998cc03977a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 353e6131d5960bf74409e119b4a45c3d25f561e49fa0e67f01692ac1f59fc482
[INFO] running `Command { std: "docker" "start" "-a" "353e6131d5960bf74409e119b4a45c3d25f561e49fa0e67f01692ac1f59fc482", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling syn v1.0.9
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling siphasher v0.3.1
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling const-random v0.1.13
[INFO] [stderr]    Compiling thiserror-impl v1.0.6
[INFO] [stderr]    Compiling string_cache v0.8.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling thiserror v1.0.6
[INFO] [stderr]    Compiling advent_of_code_2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / #![feature(
[INFO] [stdout] 2  | |     auto_traits,
[INFO] [stdout] 3  | |     drain_filter,
[INFO] [stdout] 4  | |     entry_insert,
[INFO] [stdout] ...  |
[INFO] [stdout] 13 | |     trusted_len
[INFO] [stdout] 14 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `insert` found for enum `std::collections::hash_map::Entry` in the current scope
[INFO] [stdout]   --> src/graph/flood.rs:27:23
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let entry = entry.insert(());
[INFO] [stdout]    |                       ^^^^^^ method not found in `std::collections::hash_map::Entry<'_, N, ()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `insert` found for enum `std::collections::hash_map::Entry` in the current scope
[INFO] [stdout]   --> src/graph/bfs.rs:36:31
[INFO] [stdout]    |
[INFO] [stdout] 36 |             let entry = entry.insert(current.1);
[INFO] [stdout]    |                               ^^^^^^ method not found in `std::collections::hash_map::Entry<'_, N, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `advent_of_code_2019` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "353e6131d5960bf74409e119b4a45c3d25f561e49fa0e67f01692ac1f59fc482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "353e6131d5960bf74409e119b4a45c3d25f561e49fa0e67f01692ac1f59fc482", kill_on_drop: false }`
[INFO] [stdout] 353e6131d5960bf74409e119b4a45c3d25f561e49fa0e67f01692ac1f59fc482