[INFO] cloning repository https://github.com/UnlawfulMonad/regtest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/UnlawfulMonad/regtest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnlawfulMonad%2Fregtest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnlawfulMonad%2Fregtest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 263c3a5cdf093113a911b84579d4c0eb3b609b49
[INFO] checking UnlawfulMonad/regtest against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnlawfulMonad%2Fregtest" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/UnlawfulMonad/regtest on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/UnlawfulMonad/regtest
[INFO] finished tweaking git repo https://github.com/UnlawfulMonad/regtest
[INFO] tweaked toml for git repo https://github.com/UnlawfulMonad/regtest written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/UnlawfulMonad/regtest already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 24913d9b9936549296ea392f9e9f5da6fc74dafd7d53c517e6f8bb9dab4f9f7d
[INFO] running `Command { std: "docker" "start" "-a" "24913d9b9936549296ea392f9e9f5da6fc74dafd7d53c517e6f8bb9dab4f9f7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24913d9b9936549296ea392f9e9f5da6fc74dafd7d53c517e6f8bb9dab4f9f7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24913d9b9936549296ea392f9e9f5da6fc74dafd7d53c517e6f8bb9dab4f9f7d", kill_on_drop: false }`
[INFO] [stdout] 24913d9b9936549296ea392f9e9f5da6fc74dafd7d53c517e6f8bb9dab4f9f7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aa580dc4f9ef47d8c799d13bd6934bd13a93a4d396a5e973b931d9428b2b93a9
[INFO] running `Command { std: "docker" "start" "-a" "aa580dc4f9ef47d8c799d13bd6934bd13a93a4d396a5e973b931d9428b2b93a9", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.35
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking regex-syntax v0.6.1
[INFO] [stderr]     Checking app_dirs v1.1.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking clap v2.29.0
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking regtest v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | / bitflags! {
[INFO] [stdout] 49 | |     flags Config: u32 {
[INFO] [stdout] 50 | |         const VERBOSE_ERRORS = 0b00000001,
[INFO] [stdout] 51 | |         const CAPTURE_GROUPS = 0b00000010,
[INFO] [stdout] 52 | |         const COMPILE_TIME   = 0b00000100,
[INFO] [stdout] 53 | |     }
[INFO] [stdout] 54 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | / bitflags! {
[INFO] [stdout] 49 | |     flags Config: u32 {
[INFO] [stdout] 50 | |         const VERBOSE_ERRORS = 0b00000001,
[INFO] [stdout] 51 | |         const CAPTURE_GROUPS = 0b00000010,
[INFO] [stdout] 52 | |         const COMPILE_TIME   = 0b00000100,
[INFO] [stdout] 53 | |     }
[INFO] [stdout] 54 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | / bitflags! {
[INFO] [stdout] 49 | |     flags Config: u32 {
[INFO] [stdout] 50 | |         const VERBOSE_ERRORS = 0b00000001,
[INFO] [stdout] 51 | |         const CAPTURE_GROUPS = 0b00000010,
[INFO] [stdout] 52 | |         const COMPILE_TIME   = 0b00000100,
[INFO] [stdout] 53 | |     }
[INFO] [stdout] 54 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | / bitflags! {
[INFO] [stdout] 49 | |     flags Config: u32 {
[INFO] [stdout] 50 | |         const VERBOSE_ERRORS = 0b00000001,
[INFO] [stdout] 51 | |         const CAPTURE_GROUPS = 0b00000010,
[INFO] [stdout] 52 | |         const COMPILE_TIME   = 0b00000100,
[INFO] [stdout] 53 | |     }
[INFO] [stdout] 54 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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 16.55s
[INFO] running `Command { std: "docker" "inspect" "aa580dc4f9ef47d8c799d13bd6934bd13a93a4d396a5e973b931d9428b2b93a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa580dc4f9ef47d8c799d13bd6934bd13a93a4d396a5e973b931d9428b2b93a9", kill_on_drop: false }`
[INFO] [stdout] aa580dc4f9ef47d8c799d13bd6934bd13a93a4d396a5e973b931d9428b2b93a9