[INFO] fetching crate mutable 0.2.8...
[INFO] checking mutable-0.2.8 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate mutable 0.2.8 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mutable 0.2.8
[INFO] finished tweaking crates.io crate mutable 0.2.8
[INFO] tweaked toml for crates.io crate mutable 0.2.8 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mutable 0.2.8 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89e05044b8d89284f263b985e47a82a0ec0e967efd4c64a69cfa725e1512f26f
[INFO] running `Command { std: "docker" "start" "-a" "89e05044b8d89284f263b985e47a82a0ec0e967efd4c64a69cfa725e1512f26f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89e05044b8d89284f263b985e47a82a0ec0e967efd4c64a69cfa725e1512f26f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89e05044b8d89284f263b985e47a82a0ec0e967efd4c64a69cfa725e1512f26f", kill_on_drop: false }`
[INFO] [stdout] 89e05044b8d89284f263b985e47a82a0ec0e967efd4c64a69cfa725e1512f26f
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d083f4f9e0ebe5ee9b344f2d6c4ff1445b5ef9462116f9ffbb47e24e5f36a39
[INFO] running `Command { std: "docker" "start" "-a" "8d083f4f9e0ebe5ee9b344f2d6c4ff1445b5ef9462116f9ffbb47e24e5f36a39", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]     Checking uuid v1.18.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling mutable_derive v0.3.3
[INFO] [stderr]     Checking mutable v0.2.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `softeq::*`
[INFO] [stdout]  --> src/default_impl/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use softeq::*;
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `softeq::*`
[INFO] [stdout]  --> src/default_impl/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use softeq::*;
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/holder.rs:51:20
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn get_mut(&mut self) -> MHRefMut<M> { MHRefMut(self) }
[INFO] [stdout]    |                    ^^^^^^^^^     ----------- the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn get_mut(&mut self) -> MHRefMut<'_, M> { MHRefMut(self) }
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/holder.rs:51:20
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn get_mut(&mut self) -> MHRefMut<M> { MHRefMut(self) }
[INFO] [stdout]    |                    ^^^^^^^^^     ----------- the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn get_mut(&mut self) -> MHRefMut<'_, M> { MHRefMut(self) }
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.51s
[INFO] running `Command { std: "docker" "inspect" "8d083f4f9e0ebe5ee9b344f2d6c4ff1445b5ef9462116f9ffbb47e24e5f36a39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d083f4f9e0ebe5ee9b344f2d6c4ff1445b5ef9462116f9ffbb47e24e5f36a39", kill_on_drop: false }`
[INFO] [stdout] 8d083f4f9e0ebe5ee9b344f2d6c4ff1445b5ef9462116f9ffbb47e24e5f36a39