[INFO] fetching crate int-range-ext 0.1.0...
[INFO] checking int-range-ext-0.1.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate int-range-ext 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate int-range-ext 0.1.0
[INFO] finished tweaking crates.io crate int-range-ext 0.1.0
[INFO] tweaked toml for crates.io crate int-range-ext 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate int-range-ext 0.1.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9bf52d796e6b7d50fa6903b97217a9c8209779a7409e127820b4c8559cc1143
[INFO] running `Command { std: "docker" "start" "-a" "c9bf52d796e6b7d50fa6903b97217a9c8209779a7409e127820b4c8559cc1143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9bf52d796e6b7d50fa6903b97217a9c8209779a7409e127820b4c8559cc1143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9bf52d796e6b7d50fa6903b97217a9c8209779a7409e127820b4c8559cc1143", kill_on_drop: false }`
[INFO] [stdout] c9bf52d796e6b7d50fa6903b97217a9c8209779a7409e127820b4c8559cc1143
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40b798b130c0827b3e8dec97018e0a80f3c3495ea4cebbb25d715d87d3bf1b1e
[INFO] running `Command { std: "docker" "start" "-a" "40b798b130c0827b3e8dec97018e0a80f3c3495ea4cebbb25d715d87d3bf1b1e", kill_on_drop: false }`
[INFO] [stderr]     Checking int-range-ext v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |         if self.is_empty() {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:193:17
[INFO] [stdout]     |
[INFO] [stdout] 193 |         if self.is_empty() || other.is_empty() {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:193:37
[INFO] [stdout]     |
[INFO] [stdout] 193 |         if self.is_empty() || other.is_empty() {
[INFO] [stdout]     |                                     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:375:17
[INFO] [stdout]     |
[INFO] [stdout] 375 |         if self.is_empty() || other.is_empty() {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:375:37
[INFO] [stdout]     |
[INFO] [stdout] 375 |         if self.is_empty() || other.is_empty() {
[INFO] [stdout]     |                                     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |         if self.is_empty() {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:193:17
[INFO] [stdout]     |
[INFO] [stdout] 193 |         if self.is_empty() || other.is_empty() {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:193:37
[INFO] [stdout]     |
[INFO] [stdout] 193 |         if self.is_empty() || other.is_empty() {
[INFO] [stdout]     |                                     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:375:17
[INFO] [stdout]     |
[INFO] [stdout] 375 |         if self.is_empty() || other.is_empty() {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:375:37
[INFO] [stdout]     |
[INFO] [stdout] 375 |         if self.is_empty() || other.is_empty() {
[INFO] [stdout]     |                                     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:477:32
[INFO] [stdout]     |
[INFO] [stdout] 477 |         assert_eq!((..u8::MIN).is_empty(), true);
[INFO] [stdout]     |                                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:478:32
[INFO] [stdout]     |
[INFO] [stdout] 478 |         assert_eq!((u8::MAX..).is_empty(), false);
[INFO] [stdout]     |                                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `IntRangeExt::is_empty(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(range_bounds_is_empty)]` to the crate attributes to enable `std::ops::RangeBounds::is_empty`
[INFO] [stdout]     |
[INFO] [stdout] 3   + #![feature(range_bounds_is_empty)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "40b798b130c0827b3e8dec97018e0a80f3c3495ea4cebbb25d715d87d3bf1b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40b798b130c0827b3e8dec97018e0a80f3c3495ea4cebbb25d715d87d3bf1b1e", kill_on_drop: false }`
[INFO] [stdout] 40b798b130c0827b3e8dec97018e0a80f3c3495ea4cebbb25d715d87d3bf1b1e