[INFO] fetching crate rt_ref 0.3.0...
[INFO] checking rt_ref-0.3.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate rt_ref 0.3.0 into /workspace/builds/worker-6-tc1/source
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate rt_ref 0.3.0
[INFO] finished tweaking crates.io crate rt_ref 0.3.0
[INFO] tweaked toml for crates.io crate rt_ref 0.3.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rt_ref 0.3.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rt_ref 0.3.0 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9cf50ce7886f3983f3467c56af727502badc4df136edce34e397f90581de6dc1
[INFO] running `Command { std: "docker" "start" "-a" "9cf50ce7886f3983f3467c56af727502badc4df136edce34e397f90581de6dc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cf50ce7886f3983f3467c56af727502badc4df136edce34e397f90581de6dc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cf50ce7886f3983f3467c56af727502badc4df136edce34e397f90581de6dc1", kill_on_drop: false }`
[INFO] [stdout] 9cf50ce7886f3983f3467c56af727502badc4df136edce34e397f90581de6dc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50dfdfd22d8d85c98d2970d1a26d3c00c5e99f9b1c57b36712bda78cc5c7f4b2
[INFO] running `Command { std: "docker" "start" "-a" "50dfdfd22d8d85c98d2970d1a26d3c00c5e99f9b1c57b36712bda78cc5c7f4b2", kill_on_drop: false }`
[INFO] [stderr]     Checking rt_ref v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/cell.rs:48:19
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn borrow(&self) -> CellRef<T> {
[INFO] [stdout]    |                   ^^^^^     ---------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn borrow(&self) -> CellRef<'_, T> {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/cell.rs:63:23
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn try_borrow(&self) -> Result<CellRef<T>, BorrowFail> {
[INFO] [stdout]    |                       ^^^^^            ---------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn try_borrow(&self) -> Result<CellRef<'_, T>, BorrowFail> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/cell.rs:82:23
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn borrow_mut(&self) -> CellRefMut<T> {
[INFO] [stdout]    |                       ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn borrow_mut(&self) -> CellRefMut<'_, T> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/cell.rs:97:27
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn try_borrow_mut(&self) -> Result<CellRefMut<T>, BorrowFail> {
[INFO] [stdout]    |                           ^^^^^            ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn try_borrow_mut(&self) -> Result<CellRefMut<'_, T>, BorrowFail> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/cell.rs:48:19
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn borrow(&self) -> CellRef<T> {
[INFO] [stdout]    |                   ^^^^^     ---------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn borrow(&self) -> CellRef<'_, T> {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/cell.rs:63:23
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn try_borrow(&self) -> Result<CellRef<T>, BorrowFail> {
[INFO] [stdout]    |                       ^^^^^            ---------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn try_borrow(&self) -> Result<CellRef<'_, T>, BorrowFail> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/cell.rs:82:23
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn borrow_mut(&self) -> CellRefMut<T> {
[INFO] [stdout]    |                       ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn borrow_mut(&self) -> CellRefMut<'_, T> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/cell.rs:97:27
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn try_borrow_mut(&self) -> Result<CellRefMut<T>, BorrowFail> {
[INFO] [stdout]    |                           ^^^^^            ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn try_borrow_mut(&self) -> Result<CellRefMut<'_, T>, BorrowFail> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "50dfdfd22d8d85c98d2970d1a26d3c00c5e99f9b1c57b36712bda78cc5c7f4b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50dfdfd22d8d85c98d2970d1a26d3c00c5e99f9b1c57b36712bda78cc5c7f4b2", kill_on_drop: false }`
[INFO] [stdout] 50dfdfd22d8d85c98d2970d1a26d3c00c5e99f9b1c57b36712bda78cc5c7f4b2