[INFO] cloning repository https://github.com/ernestrc/rux
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ernestrc/rux" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fernestrc%2Frux", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fernestrc%2Frux'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ad3feb3de7fec8889a04560de04c5ab42016dd0
[INFO] checking ernestrc/rux against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fernestrc%2Frux" "/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/ernestrc/rux on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ernestrc/rux
[INFO] finished tweaking git repo https://github.com/ernestrc/rux
[INFO] tweaked toml for git repo https://github.com/ernestrc/rux written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ernestrc/rux already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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 backtrace v0.3.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.3
[INFO] [stderr]   Downloaded backtrace-sys v0.1.5
[INFO] [stderr]   Downloaded error-chain v0.7.1
[INFO] [stderr]   Downloaded pad v0.1.4
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] fd8d215bf4b7db79a239a2ecaa4ceb912290892671d5bcd8b5d891b4993edd67
[INFO] running `Command { std: "docker" "start" "-a" "fd8d215bf4b7db79a239a2ecaa4ceb912290892671d5bcd8b5d891b4993edd67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd8d215bf4b7db79a239a2ecaa4ceb912290892671d5bcd8b5d891b4993edd67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd8d215bf4b7db79a239a2ecaa4ceb912290892671d5bcd8b5d891b4993edd67", kill_on_drop: false }`
[INFO] [stdout] fd8d215bf4b7db79a239a2ecaa4ceb912290892671d5bcd8b5d891b4993edd67
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 519e10b0b8ddfb28eef1f5fb3271ff30bddf09245598335d826e0bd65922affd
[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" "519e10b0b8ddfb28eef1f5fb3271ff30bddf09245598335d826e0bd65922affd", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.18
[INFO] [stderr]    Compiling gcc v0.3.40
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]     Checking rustc-demangle v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking unicode-width v0.1.3
[INFO] [stderr]     Checking pad v0.1.4
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking num_cpus v1.2.0
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking error-chain v0.7.1
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking rux v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain! {
[INFO] [stdout] 5  | |     types {
[INFO] [stdout] 6  | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |     }
[INFO] [stdout] 25 | | }
[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 associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain! {
[INFO] [stdout] 5  | |     types {
[INFO] [stdout] 6  | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |     }
[INFO] [stdout] 25 | | }
[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: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/epoll/mod.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 46 |   #[inline]
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/epoll/mod.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     static ref NO_INTEREST: EpollEvent = {
[INFO] [stdout] 14 | |         EpollEvent {
[INFO] [stdout] 15 | |             events: EpollEventKind::empty(),
[INFO] [stdout] ...  |
[INFO] [stdout] 18 | |     };
[INFO] [stdout] 19 | | }
[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 constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/epoll/mod.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     static ref NO_INTEREST: EpollEvent = {
[INFO] [stdout] 14 | |         EpollEvent {
[INFO] [stdout] 15 | |             events: EpollEventKind::empty(),
[INFO] [stdout] ...  |
[INFO] [stdout] 18 | |     };
[INFO] [stdout] 19 | | }
[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: unused import: `super::*`
[INFO] [stdout]    --> src/mux/handler.rs:150:7
[INFO] [stdout]     |
[INFO] [stdout] 150 |   use super::*;
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain! {
[INFO] [stdout] 5  | |     types {
[INFO] [stdout] 6  | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |     }
[INFO] [stdout] 25 | | }
[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 associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain! {
[INFO] [stdout] 5  | |     types {
[INFO] [stdout] 6  | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |     }
[INFO] [stdout] 25 | | }
[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: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/epoll/mod.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 46 |   #[inline]
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/epoll/mod.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     static ref NO_INTEREST: EpollEvent = {
[INFO] [stdout] 14 | |         EpollEvent {
[INFO] [stdout] 15 | |             events: EpollEventKind::empty(),
[INFO] [stdout] ...  |
[INFO] [stdout] 18 | |     };
[INFO] [stdout] 19 | | }
[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 constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/epoll/mod.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     static ref NO_INTEREST: EpollEvent = {
[INFO] [stdout] 14 | |         EpollEvent {
[INFO] [stdout] 15 | |             events: EpollEventKind::empty(),
[INFO] [stdout] ...  |
[INFO] [stdout] 18 | |     };
[INFO] [stdout] 19 | | }
[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 associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain! {
[INFO] [stdout] 5  | |     types {
[INFO] [stdout] 6  | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |     }
[INFO] [stdout] 25 | | }
[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 associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / error_chain! {
[INFO] [stdout] 5  | |     types {
[INFO] [stdout] 6  | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 7  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |     }
[INFO] [stdout] 25 | | }
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]    --> src/buf/tests.rs:268:18
[INFO] [stdout]     |
[INFO] [stdout] 268 |   fn from_buffer(buffer: &mut ByteBuffer) -> Result<Option<MyType>> {
[INFO] [stdout]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
[INFO] [stdout]    --> src/epoll/mod.rs:215:13
[INFO] [stdout]     |
[INFO] [stdout] 215 |     assert!(ev.events.contains(EPOLLIN));
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(safe_packed_borrows)]` 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 a future release!
[INFO] [stdout]     = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>
[INFO] [stdout]     = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.06s
[INFO] running `Command { std: "docker" "inspect" "519e10b0b8ddfb28eef1f5fb3271ff30bddf09245598335d826e0bd65922affd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "519e10b0b8ddfb28eef1f5fb3271ff30bddf09245598335d826e0bd65922affd", kill_on_drop: false }`
[INFO] [stdout] 519e10b0b8ddfb28eef1f5fb3271ff30bddf09245598335d826e0bd65922affd