[INFO] fetching crate pattern_partition_prediction 0.1.4...
[INFO] building pattern_partition_prediction-0.1.4 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate pattern_partition_prediction 0.1.4 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate pattern_partition_prediction 0.1.4
[INFO] finished tweaking crates.io crate pattern_partition_prediction 0.1.4
[INFO] tweaked toml for crates.io crate pattern_partition_prediction 0.1.4 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pattern_partition_prediction 0.1.4 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17f8d8683730c1af4d3b6635342d97e1a2df871725799f187ac50e746e825da1
[INFO] running `Command { std: "docker" "start" "-a" "17f8d8683730c1af4d3b6635342d97e1a2df871725799f187ac50e746e825da1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17f8d8683730c1af4d3b6635342d97e1a2df871725799f187ac50e746e825da1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17f8d8683730c1af4d3b6635342d97e1a2df871725799f187ac50e746e825da1", kill_on_drop: false }`
[INFO] [stdout] 17f8d8683730c1af4d3b6635342d97e1a2df871725799f187ac50e746e825da1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 740f6f627b899ed77f62b61adf01ca4c9379b952ac9b78e9287be1e2b07a393e
[INFO] running `Command { std: "docker" "start" "-a" "740f6f627b899ed77f62b61adf01ca4c9379b952ac9b78e9287be1e2b07a393e", kill_on_drop: false }`
[INFO] [stderr]    Compiling tabfile v0.2.1
[INFO] [stderr]    Compiling pattern_partition_prediction v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:441:18
[INFO] [stdout]     |
[INFO] [stdout] 441 | fn pad_size(seq: &str, min_size: usize) -> Cow<str> {
[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] 441 | fn pad_size(seq: &str, min_size: usize) -> Cow<'_, str> {
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "740f6f627b899ed77f62b61adf01ca4c9379b952ac9b78e9287be1e2b07a393e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "740f6f627b899ed77f62b61adf01ca4c9379b952ac9b78e9287be1e2b07a393e", kill_on_drop: false }`
[INFO] [stdout] 740f6f627b899ed77f62b61adf01ca4c9379b952ac9b78e9287be1e2b07a393e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae86e7e71398373f6bd0136e4947998c342c3b687fab9cbf1b98c2e4b4d6181a
[INFO] running `Command { std: "docker" "start" "-a" "ae86e7e71398373f6bd0136e4947998c342c3b687fab9cbf1b98c2e4b4d6181a", kill_on_drop: false }`
[INFO] [stderr]    Compiling pattern_partition_prediction v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:441:18
[INFO] [stdout]     |
[INFO] [stdout] 441 | fn pad_size(seq: &str, min_size: usize) -> Cow<str> {
[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] 441 | fn pad_size(seq: &str, min_size: usize) -> Cow<'_, str> {
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:441:18
[INFO] [stdout]     |
[INFO] [stdout] 441 | fn pad_size(seq: &str, min_size: usize) -> Cow<str> {
[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] 441 | fn pad_size(seq: &str, min_size: usize) -> Cow<'_, str> {
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "ae86e7e71398373f6bd0136e4947998c342c3b687fab9cbf1b98c2e4b4d6181a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae86e7e71398373f6bd0136e4947998c342c3b687fab9cbf1b98c2e4b4d6181a", kill_on_drop: false }`
[INFO] [stdout] ae86e7e71398373f6bd0136e4947998c342c3b687fab9cbf1b98c2e4b4d6181a