[INFO] cloning repository https://github.com/benbrunton/rust_cards
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benbrunton/rust_cards" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenbrunton%2Frust_cards", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenbrunton%2Frust_cards'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78c66dafee8e50e21ae42cf5f1c5282db805dfd1
[INFO] checking benbrunton/rust_cards against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenbrunton%2Frust_cards" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benbrunton/rust_cards on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benbrunton/rust_cards
[INFO] finished tweaking git repo https://github.com/benbrunton/rust_cards
[INFO] tweaked toml for git repo https://github.com/benbrunton/rust_cards written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/benbrunton/rust_cards already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--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 lazy_static v0.1.15
[INFO] [stderr]   Downloaded libc v0.2.8
[INFO] [stderr]   Downloaded colored v1.1.0
[INFO] [stderr]   Downloaded memchr v0.1.10
[INFO] [stderr]   Downloaded regex-syntax v0.3.0
[INFO] [stderr]   Downloaded regex v0.1.58
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5dae3ac77018b0ef999b4af6a47f39aa86fa95af47d7970263c4c5cbe6f6241a
[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" "5dae3ac77018b0ef999b4af6a47f39aa86fa95af47d7970263c4c5cbe6f6241a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5dae3ac77018b0ef999b4af6a47f39aa86fa95af47d7970263c4c5cbe6f6241a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dae3ac77018b0ef999b4af6a47f39aa86fa95af47d7970263c4c5cbe6f6241a", kill_on_drop: false }`
[INFO] [stdout] 5dae3ac77018b0ef999b4af6a47f39aa86fa95af47d7970263c4c5cbe6f6241a
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5cf6bbc843d6a7b2ba0b6fd2a1c1ca0d3f99c8fe36a03388103aec3bf3ca4def
[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" "5cf6bbc843d6a7b2ba0b6fd2a1c1ca0d3f99c8fe36a03388103aec3bf3ca4def", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.3.0
[INFO] [stderr]     Checking lazy_static v0.1.15
[INFO] [stderr]     Checking colored v1.1.0
[INFO] [stderr]     Checking memchr v0.1.10
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking aho-corasick v0.5.1
[INFO] [stderr]     Checking regex v0.1.58
[INFO] [stderr]     Checking solitaire v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/game.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |             'a' ... 'd'  => {
[INFO] [stdout]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/game.rs:231:17
[INFO] [stdout]     |
[INFO] [stdout] 231 |             '1' ... '7' => {
[INFO] [stdout]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/game.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |             'a' ... 'd'  => {
[INFO] [stdout]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/game.rs:231:17
[INFO] [stdout]     |
[INFO] [stdout] 231 |             '1' ... '7' => {
[INFO] [stdout]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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 4.43s
[INFO] running `Command { std: "docker" "inspect" "5cf6bbc843d6a7b2ba0b6fd2a1c1ca0d3f99c8fe36a03388103aec3bf3ca4def", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cf6bbc843d6a7b2ba0b6fd2a1c1ca0d3f99c8fe36a03388103aec3bf3ca4def", kill_on_drop: false }`
[INFO] [stdout] 5cf6bbc843d6a7b2ba0b6fd2a1c1ca0d3f99c8fe36a03388103aec3bf3ca4def