[INFO] fetching crate regtest 0.3.5...
[INFO] checking regtest-0.3.5 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate regtest 0.3.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate regtest 0.3.5 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate regtest 0.3.5
[INFO] finished tweaking crates.io crate regtest 0.3.5
[INFO] tweaked toml for crates.io crate regtest 0.3.5 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4064519e6f614c9496e40193f7393778c04cc2f889566ce8108ec20ee353b68b
[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" "4064519e6f614c9496e40193f7393778c04cc2f889566ce8108ec20ee353b68b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4064519e6f614c9496e40193f7393778c04cc2f889566ce8108ec20ee353b68b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4064519e6f614c9496e40193f7393778c04cc2f889566ce8108ec20ee353b68b", kill_on_drop: false }`
[INFO] [stdout] 4064519e6f614c9496e40193f7393778c04cc2f889566ce8108ec20ee353b68b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f87c28a6efb101e0b84e8b98d4243e0dadc43e154d89f3557316e983901c7f2
[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" "6f87c28a6efb101e0b84e8b98d4243e0dadc43e154d89f3557316e983901c7f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking encode_unicode v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking app_dirs v1.2.1
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking regex v1.3.9
[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 13.42s
[INFO] running `Command { std: "docker" "inspect" "6f87c28a6efb101e0b84e8b98d4243e0dadc43e154d89f3557316e983901c7f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f87c28a6efb101e0b84e8b98d4243e0dadc43e154d89f3557316e983901c7f2", kill_on_drop: false }`
[INFO] [stdout] 6f87c28a6efb101e0b84e8b98d4243e0dadc43e154d89f3557316e983901c7f2