[INFO] fetching crate tracing-cloudchamber 0.1.0...
[INFO] checking tracing-cloudchamber-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate tracing-cloudchamber 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate tracing-cloudchamber 0.1.0
[INFO] finished tweaking crates.io crate tracing-cloudchamber 0.1.0
[INFO] tweaked toml for crates.io crate tracing-cloudchamber 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tracing-cloudchamber 0.1.0 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 tracing-cloudchamber 0.1.0 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.153
[INFO] [stderr]   Downloaded cxxbridge-cmd v1.0.153
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.153
[INFO] [stderr]   Downloaded cxx-build v1.0.153
[INFO] [stderr]   Downloaded cxx v1.0.153
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 474e9ead367a5b18de7b0a2893b4a1e3f9d2aa0d4cb98894c50b93606085f2a4
[INFO] running `Command { std: "docker" "start" "-a" "474e9ead367a5b18de7b0a2893b4a1e3f9d2aa0d4cb98894c50b93606085f2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "474e9ead367a5b18de7b0a2893b4a1e3f9d2aa0d4cb98894c50b93606085f2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "474e9ead367a5b18de7b0a2893b4a1e3f9d2aa0d4cb98894c50b93606085f2a4", kill_on_drop: false }`
[INFO] [stdout] 474e9ead367a5b18de7b0a2893b4a1e3f9d2aa0d4cb98894c50b93606085f2a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 9a7a7ef9b54e265ea4981b64d65a16739bcdf96ba8b4fcd95863d5ea3ea9964a
[INFO] running `Command { std: "docker" "start" "-a" "9a7a7ef9b54e265ea4981b64d65a16739bcdf96ba8b4fcd95863d5ea3ea9964a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling scratch v1.0.8
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.153
[INFO] [stderr]    Compiling rustversion v1.0.20
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling unicode-width v0.2.0
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking foldhash v0.1.5
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking tracing-core v0.1.33
[INFO] [stderr]    Compiling codespan-reporting v0.12.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling jobserver v0.1.33
[INFO] [stderr]    Compiling cc v1.2.17
[INFO] [stderr]    Compiling link-cplusplus v1.0.10
[INFO] [stderr]    Compiling cxx v1.0.153
[INFO] [stderr]    Compiling cxx-build v1.0.153
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.153
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]    Compiling tracing-cloudchamber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:656:18
[INFO] [stdout]     |
[INFO] [stdout] 656 |     pub fn enter(&self) -> Box<Entered> {
[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] 656 |     pub fn enter(&self) -> Box<Entered<'_>> {
[INFO] [stdout]     |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:656:18
[INFO] [stdout]     |
[INFO] [stdout] 656 |     pub fn enter(&self) -> Box<Entered> {
[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] 656 |     pub fn enter(&self) -> Box<Entered<'_>> {
[INFO] [stdout]     |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 13.93s
[INFO] running `Command { std: "docker" "inspect" "9a7a7ef9b54e265ea4981b64d65a16739bcdf96ba8b4fcd95863d5ea3ea9964a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a7a7ef9b54e265ea4981b64d65a16739bcdf96ba8b4fcd95863d5ea3ea9964a", kill_on_drop: false }`
[INFO] [stdout] 9a7a7ef9b54e265ea4981b64d65a16739bcdf96ba8b4fcd95863d5ea3ea9964a