[INFO] fetching crate polynomial-roots 1.0.0...
[INFO] building polynomial-roots-1.0.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate polynomial-roots 1.0.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate polynomial-roots 1.0.0
[INFO] finished tweaking crates.io crate polynomial-roots 1.0.0
[INFO] tweaked toml for crates.io crate polynomial-roots 1.0.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate polynomial-roots 1.0.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate polynomial-roots 1.0.0 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d09345f35a6d8a6e5d2cbcea6332ea1c7a0e7582fc5901cebfeceddd7149911
[INFO] running `Command { std: "docker" "start" "-a" "1d09345f35a6d8a6e5d2cbcea6332ea1c7a0e7582fc5901cebfeceddd7149911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d09345f35a6d8a6e5d2cbcea6332ea1c7a0e7582fc5901cebfeceddd7149911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d09345f35a6d8a6e5d2cbcea6332ea1c7a0e7582fc5901cebfeceddd7149911", kill_on_drop: false }`
[INFO] [stdout] 1d09345f35a6d8a6e5d2cbcea6332ea1c7a0e7582fc5901cebfeceddd7149911
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58078bdfe57f92c33fc99ece6f0e2650ff0fbadbd33df2ec27b23a2f22026982
[INFO] running `Command { std: "docker" "start" "-a" "58078bdfe57f92c33fc99ece6f0e2650ff0fbadbd33df2ec27b23a2f22026982", kill_on_drop: false }`
[INFO] [stderr]    Compiling polynomial-roots v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/polynomials.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     &self,
[INFO] [stdout]    |     ^^^^^ the lifetime is elided here
[INFO] [stdout] 49 |   ) -> std::collections::linked_list::Iter<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden 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] 49 |   ) -> std::collections::linked_list::Iter<'_, f32> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "58078bdfe57f92c33fc99ece6f0e2650ff0fbadbd33df2ec27b23a2f22026982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58078bdfe57f92c33fc99ece6f0e2650ff0fbadbd33df2ec27b23a2f22026982", kill_on_drop: false }`
[INFO] [stdout] 58078bdfe57f92c33fc99ece6f0e2650ff0fbadbd33df2ec27b23a2f22026982
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79f4a4adf9d2746c888d2c56bf4ae17faa8591553e0855d343cfc8746fde5380
[INFO] running `Command { std: "docker" "start" "-a" "79f4a4adf9d2746c888d2c56bf4ae17faa8591553e0855d343cfc8746fde5380", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/polynomials.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     &self,
[INFO] [stdout]    |     ^^^^^ the lifetime is elided here
[INFO] [stdout] 49 |   ) -> std::collections::linked_list::Iter<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden 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] 49 |   ) -> std::collections::linked_list::Iter<'_, f32> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling polynomial-roots v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/polynomials.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     &self,
[INFO] [stdout]    |     ^^^^^ the lifetime is elided here
[INFO] [stdout] 49 |   ) -> std::collections::linked_list::Iter<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden 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] 49 |   ) -> std::collections::linked_list::Iter<'_, f32> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "79f4a4adf9d2746c888d2c56bf4ae17faa8591553e0855d343cfc8746fde5380", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79f4a4adf9d2746c888d2c56bf4ae17faa8591553e0855d343cfc8746fde5380", kill_on_drop: false }`
[INFO] [stdout] 79f4a4adf9d2746c888d2c56bf4ae17faa8591553e0855d343cfc8746fde5380
