[INFO] fetching crate bitvec-rs 0.2.2...
[INFO] checking bitvec-rs-0.2.2 against try#3b057e82c7a2874b12909b7e79d444f73535e9e2 for pr-139493-4
[INFO] extracting crate bitvec-rs 0.2.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate bitvec-rs 0.2.2
[INFO] finished tweaking crates.io crate bitvec-rs 0.2.2
[INFO] tweaked toml for crates.io crate bitvec-rs 0.2.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bitvec-rs 0.2.2 on toolchain 3b057e82c7a2874b12909b7e79d444f73535e9e2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3b057e82c7a2874b12909b7e79d444f73535e9e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate bitvec-rs 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3b057e82c7a2874b12909b7e79d444f73535e9e2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+3b057e82c7a2874b12909b7e79d444f73535e9e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee633ad0d04dae672fa01ddea670a3eecbde59324af5d144ff5a2ea40341edb1
[INFO] running `Command { std: "docker" "start" "-a" "ee633ad0d04dae672fa01ddea670a3eecbde59324af5d144ff5a2ea40341edb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee633ad0d04dae672fa01ddea670a3eecbde59324af5d144ff5a2ea40341edb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee633ad0d04dae672fa01ddea670a3eecbde59324af5d144ff5a2ea40341edb1", kill_on_drop: false }`
[INFO] [stdout] ee633ad0d04dae672fa01ddea670a3eecbde59324af5d144ff5a2ea40341edb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+3b057e82c7a2874b12909b7e79d444f73535e9e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 126d6847049ebbbc2d070b48c344ef7f11e8b37b7389d50a544202b8d78f30f1
[INFO] running `Command { std: "docker" "start" "-a" "126d6847049ebbbc2d070b48c344ef7f11e8b37b7389d50a544202b8d78f30f1", kill_on_drop: false }`
[INFO] [stderr]     Checking bitvec-rs v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `panic` is ambiguous
[INFO] [stdout]    --> src/lib.rs:180:38
[INFO] [stdout]     |
[INFO] [stdout] 180 |             if index >= self.nbits { panic!("Index {} out of bounds [0, {})", index, self.nbits); }
[INFO] [stdout]     |                                      ^^^^^ ambiguous name
[INFO] [stdout] ...
[INFO] [stdout] 323 |     impl_bitvec!(Vec<u8>);
[INFO] [stdout]     |     --------------------- in this macro invocation
[INFO] [stdout]     |
[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 #147319 <https://github.com/rust-lang/rust/issues/147319>
[INFO] [stdout]     = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout] note: `panic` could refer to the macro imported here
[INFO] [stdout]    --> src/lib.rs:21:5
[INFO] [stdout]     |
[INFO] [stdout]  21 | use core::prelude::rust_2021::*;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `panic` to disambiguate
[INFO] [stdout]     = help: or use `crate::panic` to refer to this macro unambiguously
[INFO] [stdout] note: `panic` could also refer to a macro from prelude
[INFO] [stdout]    --> /rustc/3b057e82c7a2874b12909b7e79d444f73535e9e2/library/std/src/prelude/mod.rs:152:12
[INFO] [stdout]     = note: `#[warn(ambiguous_panic_imports)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_bitvec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `panic` is ambiguous
[INFO] [stdout]    --> src/lib.rs:180:38
[INFO] [stdout]     |
[INFO] [stdout] 180 |             if index >= self.nbits { panic!("Index {} out of bounds [0, {})", index, self.nbits); }
[INFO] [stdout]     |                                      ^^^^^ ambiguous name
[INFO] [stdout] ...
[INFO] [stdout] 323 |     impl_bitvec!(Vec<u8>);
[INFO] [stdout]     |     --------------------- in this macro invocation
[INFO] [stdout]     |
[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 #147319 <https://github.com/rust-lang/rust/issues/147319>
[INFO] [stdout]     = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout] note: `panic` could refer to the macro imported here
[INFO] [stdout]    --> src/lib.rs:21:5
[INFO] [stdout]     |
[INFO] [stdout]  21 | use core::prelude::rust_2021::*;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `panic` to disambiguate
[INFO] [stdout]     = help: or use `crate::panic` to refer to this macro unambiguously
[INFO] [stdout] note: `panic` could also refer to a macro from prelude
[INFO] [stdout]    --> /rustc/3b057e82c7a2874b12909b7e79d444f73535e9e2/library/std/src/prelude/mod.rs:152:12
[INFO] [stdout]     = note: `#[warn(ambiguous_panic_imports)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_bitvec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "126d6847049ebbbc2d070b48c344ef7f11e8b37b7389d50a544202b8d78f30f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "126d6847049ebbbc2d070b48c344ef7f11e8b37b7389d50a544202b8d78f30f1", kill_on_drop: false }`
[INFO] [stdout] 126d6847049ebbbc2d070b48c344ef7f11e8b37b7389d50a544202b8d78f30f1