[INFO] cloning repository https://github.com/CianLR/mazegen-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CianLR/mazegen-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCianLR%2Fmazegen-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCianLR%2Fmazegen-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c45d2180582696b40e400ba72e2e54971048dc1f
[INFO] checking CianLR/mazegen-rs against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCianLR%2Fmazegen-rs" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CianLR/mazegen-rs on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CianLR/mazegen-rs
[INFO] finished tweaking git repo https://github.com/CianLR/mazegen-rs
[INFO] tweaked toml for git repo https://github.com/CianLR/mazegen-rs written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/CianLR/mazegen-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca31acff69e7e0f20cdf9b1150b28c17a5356fe7d13f63157a74a5695a347ffe
[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" "ca31acff69e7e0f20cdf9b1150b28c17a5356fe7d13f63157a74a5695a347ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca31acff69e7e0f20cdf9b1150b28c17a5356fe7d13f63157a74a5695a347ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca31acff69e7e0f20cdf9b1150b28c17a5356fe7d13f63157a74a5695a347ffe", kill_on_drop: false }`
[INFO] [stdout] ca31acff69e7e0f20cdf9b1150b28c17a5356fe7d13f63157a74a5695a347ffe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 498c52e3e831c0472f5c0c9f5480d379b8259bc4a01a2ffbce492d66cdaa77cb
[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" "498c52e3e831c0472f5c0c9f5480d379b8259bc4a01a2ffbce492d66cdaa77cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking getrandom v0.1.8
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking mazegen-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/algos/algo.rs:18:62
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn get_algorithm(algo: &String, ani: bool) -> Result<Box<MazeAlgo>, String> {
[INFO] [stdout]    |                                                              ^^^^^^^^ help: use `dyn`: `dyn MazeAlgo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/maze.rs:54:43
[INFO] [stdout]    |
[INFO] [stdout] 54 | ...                   algo: &mut Box<MazeAlgo>) -> Result<(), String> {
[INFO] [stdout]    |                                      ^^^^^^^^ help: use `dyn`: `dyn MazeAlgo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/algos/algo.rs:18:62
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn get_algorithm(algo: &String, ani: bool) -> Result<Box<MazeAlgo>, String> {
[INFO] [stdout]    |                                                              ^^^^^^^^ help: use `dyn`: `dyn MazeAlgo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/maze.rs:54:43
[INFO] [stdout]    |
[INFO] [stdout] 54 | ...                   algo: &mut Box<MazeAlgo>) -> Result<(), String> {
[INFO] [stdout]    |                                      ^^^^^^^^ help: use `dyn`: `dyn MazeAlgo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.09s
[INFO] running `Command { std: "docker" "inspect" "498c52e3e831c0472f5c0c9f5480d379b8259bc4a01a2ffbce492d66cdaa77cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "498c52e3e831c0472f5c0c9f5480d379b8259bc4a01a2ffbce492d66cdaa77cb", kill_on_drop: false }`
[INFO] [stdout] 498c52e3e831c0472f5c0c9f5480d379b8259bc4a01a2ffbce492d66cdaa77cb