[INFO] fetching crate rivia 0.2.10...
[INFO] checking rivia-0.2.10 against eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[INFO] extracting crate rivia 0.2.10 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rivia 0.2.10
[INFO] finished tweaking crates.io crate rivia 0.2.10
[INFO] tweaked toml for crates.io crate rivia 0.2.10 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rivia 0.2.10 on toolchain eca445e5ae4a6679cc27d3a09106ce245e13a5a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rivia 0.2.10 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" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `rivia` (manifest) generated 1 warning
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 9eea34bf30a89eefa4d657420874c4a519597d926e58fbdc6b0f4cacb22caa0b
[INFO] running `Command { std: "docker" "start" "9eea34bf30a89eefa4d657420874c4a519597d926e58fbdc6b0f4cacb22caa0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9eea34bf30a89eefa4d657420874c4a519597d926e58fbdc6b0f4cacb22caa0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9eea34bf30a89eefa4d657420874c4a519597d926e58fbdc6b0f4cacb22caa0b" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9eea34bf30a89eefa4d657420874c4a519597d926e58fbdc6b0f4cacb22caa0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9eea34bf30a89eefa4d657420874c4a519597d926e58fbdc6b0f4cacb22caa0b" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `rivia` (manifest) generated 1 warning
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking either v1.12.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking nix v0.23.2
[INFO] [stderr]     Checking rivia v0.2.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `trying`
[INFO] [stdout]  --> src/sys/fs/entries.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     trying,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `trying`
[INFO] [stdout]   --> src/sys/fs/stdfs/entry.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     trying,
[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/sys/fs/memfs/vfs.rs:432:42
[INFO] [stdout]     |
[INFO] [stdout] 432 |                 dst_root.mash(src.path().trim_prefix(src_root.path().dir()?))
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `Path::trim_prefix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/memfs/vfs.rs:434:42
[INFO] [stdout]     |
[INFO] [stdout] 434 |                 dst_root.mash(src.path().trim_prefix(src_root.path()))
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `Path::trim_prefix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/memfs/vfs.rs:1579:40
[INFO] [stdout]      |
[INFO] [stdout] 1579 |                 dst_root.mash(src_path.trim_prefix(src_root.dir()?))
[INFO] [stdout]      |                                        ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `Path::trim_prefix`
[INFO] [stdout]     -->  src/lib.rs:61:1
[INFO] [stdout]      |
[INFO] [stdout]   61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/memfs/vfs.rs:1581:40
[INFO] [stdout]      |
[INFO] [stdout] 1581 |                 dst_root.mash(src_path.trim_prefix(&src_root))
[INFO] [stdout]      |                                        ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `Path::trim_prefix`
[INFO] [stdout]     -->  src/lib.rs:61:1
[INFO] [stdout]      |
[INFO] [stdout]   61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/stdfs/mod.rs:615:42
[INFO] [stdout]     |
[INFO] [stdout] 615 |                 dst_root.mash(src.path().trim_prefix(src_root.path().dir()?))
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `Path::trim_prefix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/stdfs/mod.rs:617:42
[INFO] [stdout]     |
[INFO] [stdout] 617 |                 dst_root.mash(src.path().trim_prefix(src_root.path()))
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `Path::trim_prefix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sys/fs/memfs/vfs.rs:152:30
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub(crate) fn read_guard(&self) -> MemfsGuard {
[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] 152 |     pub(crate) fn read_guard(&self) -> MemfsGuard<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sys/fs/memfs/vfs.rs:157:31
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub(crate) fn write_guard(&self) -> MemfsGuard {
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub(crate) fn write_guard(&self) -> MemfsGuard<'_> {
[INFO] [stdout]     |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `trying`
[INFO] [stdout]  --> src/sys/fs/entries.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     trying,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `trying`
[INFO] [stdout]   --> src/sys/fs/stdfs/entry.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     trying,
[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/core/string.rs:202:26
[INFO] [stdout]     |
[INFO] [stdout] 202 |         assert_eq!("foo".trim_suffix("boo"), "foo"); // no change
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `core::string::StringExt::trim_suffix(...)` to keep using the current method
[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]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `core::str::<impl str>::trim_suffix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[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/core/string.rs:203:26
[INFO] [stdout]     |
[INFO] [stdout] 203 |         assert_eq!("foo".trim_suffix("oo"), "f");
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `core::string::StringExt::trim_suffix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `core::str::<impl str>::trim_suffix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[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/core/string.rs:204:26
[INFO] [stdout]     |
[INFO] [stdout] 204 |         assert_eq!("ƒoo".trim_suffix("o"), "ƒo"); // fancy f!
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `core::string::StringExt::trim_suffix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `core::str::<impl str>::trim_suffix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/memfs/vfs.rs:432:42
[INFO] [stdout]     |
[INFO] [stdout] 432 |                 dst_root.mash(src.path().trim_prefix(src_root.path().dir()?))
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `std::path::Path::trim_prefix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/memfs/vfs.rs:434:42
[INFO] [stdout]     |
[INFO] [stdout] 434 |                 dst_root.mash(src.path().trim_prefix(src_root.path()))
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `std::path::Path::trim_prefix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/memfs/vfs.rs:1579:40
[INFO] [stdout]      |
[INFO] [stdout] 1579 |                 dst_root.mash(src_path.trim_prefix(src_root.dir()?))
[INFO] [stdout]      |                                        ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `std::path::Path::trim_prefix`
[INFO] [stdout]     -->  src/lib.rs:61:1
[INFO] [stdout]      |
[INFO] [stdout]   61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/memfs/vfs.rs:1581:40
[INFO] [stdout]      |
[INFO] [stdout] 1581 |                 dst_root.mash(src_path.trim_prefix(&src_root))
[INFO] [stdout]      |                                        ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `std::path::Path::trim_prefix`
[INFO] [stdout]     -->  src/lib.rs:61:1
[INFO] [stdout]      |
[INFO] [stdout]   61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/path.rs:1332:35
[INFO] [stdout]      |
[INFO] [stdout] 1332 |         assert_eq!(Path::new("/").trim_prefix("/"), PathBuf::new());
[INFO] [stdout]      |                                   ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `std::path::Path::trim_prefix`
[INFO] [stdout]     -->  src/lib.rs:61:1
[INFO] [stdout]      |
[INFO] [stdout]   61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/path.rs:1335:42
[INFO] [stdout]      |
[INFO] [stdout] 1335 |         assert_eq!(Path::new("/foo/bar").trim_prefix("/foo"), PathBuf::from("/bar"));
[INFO] [stdout]      |                                          ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `std::path::Path::trim_prefix`
[INFO] [stdout]     -->  src/lib.rs:61:1
[INFO] [stdout]      |
[INFO] [stdout]   61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/path.rs:1338:35
[INFO] [stdout]      |
[INFO] [stdout] 1338 |         assert_eq!(Path::new("/").trim_prefix(""), PathBuf::from("/"));
[INFO] [stdout]      |                                   ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `std::path::Path::trim_prefix`
[INFO] [stdout]     -->  src/lib.rs:61:1
[INFO] [stdout]      |
[INFO] [stdout]   61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/path.rs:1339:38
[INFO] [stdout]      |
[INFO] [stdout] 1339 |         assert_eq!(Path::new("/foo").trim_prefix("blah"), PathBuf::from("/foo"));
[INFO] [stdout]      |                                      ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `std::path::Path::trim_prefix`
[INFO] [stdout]     -->  src/lib.rs:61:1
[INFO] [stdout]      |
[INFO] [stdout]   61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/stdfs/mod.rs:615:42
[INFO] [stdout]     |
[INFO] [stdout] 615 |                 dst_root.mash(src.path().trim_prefix(src_root.path().dir()?))
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `std::path::Path::trim_prefix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[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/sys/fs/stdfs/mod.rs:617:42
[INFO] [stdout]     |
[INFO] [stdout] 617 |                 dst_root.mash(src.path().trim_prefix(src_root.path()))
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `sys::fs::path::PathExt::trim_prefix(...)` to keep using the current method
[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: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `std::path::Path::trim_prefix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sys/fs/memfs/vfs.rs:152:30
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub(crate) fn read_guard(&self) -> MemfsGuard {
[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] 152 |     pub(crate) fn read_guard(&self) -> MemfsGuard<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sys/fs/memfs/vfs.rs:157:31
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub(crate) fn write_guard(&self) -> MemfsGuard {
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub(crate) fn write_guard(&self) -> MemfsGuard<'_> {
[INFO] [stdout]     |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.05s
[INFO] running `Command { std: "docker" "inspect" "9eea34bf30a89eefa4d657420874c4a519597d926e58fbdc6b0f4cacb22caa0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eea34bf30a89eefa4d657420874c4a519597d926e58fbdc6b0f4cacb22caa0b", kill_on_drop: false }`
[INFO] [stdout] 9eea34bf30a89eefa4d657420874c4a519597d926e58fbdc6b0f4cacb22caa0b
