[INFO] fetching crate sparse 0.1.2...
[INFO] building sparse-0.1.2 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate sparse 0.1.2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate sparse 0.1.2
[INFO] finished tweaking crates.io crate sparse 0.1.2
[INFO] tweaked toml for crates.io crate sparse 0.1.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sparse 0.1.2 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c693f11ad5011088497aa3eebc882c6c631b63e26dbd8a47e2b52d7a982ce02
[INFO] running `Command { std: "docker" "start" "-a" "0c693f11ad5011088497aa3eebc882c6c631b63e26dbd8a47e2b52d7a982ce02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c693f11ad5011088497aa3eebc882c6c631b63e26dbd8a47e2b52d7a982ce02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c693f11ad5011088497aa3eebc882c6c631b63e26dbd8a47e2b52d7a982ce02", kill_on_drop: false }`
[INFO] [stdout] 0c693f11ad5011088497aa3eebc882c6c631b63e26dbd8a47e2b52d7a982ce02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f67e09a83bc349b1470063861bf4ba7e7c8b610fc9f66bffa8fe85163094530
[INFO] running `Command { std: "docker" "start" "-a" "9f67e09a83bc349b1470063861bf4ba7e7c8b610fc9f66bffa8fe85163094530", kill_on_drop: false }`
[INFO] [stderr]    Compiling sparse v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/coo.rs:1156:17
[INFO] [stdout]      |
[INFO] [stdout] 1156 |     pub fn iter(&self) -> Iter<T> {
[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] 1156 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]      |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/coo.rs:1189:21
[INFO] [stdout]      |
[INFO] [stdout] 1189 |     pub fn iter_mut(&mut self) -> IterMut<T> {
[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] 1189 |     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]      |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "9f67e09a83bc349b1470063861bf4ba7e7c8b610fc9f66bffa8fe85163094530", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f67e09a83bc349b1470063861bf4ba7e7c8b610fc9f66bffa8fe85163094530", kill_on_drop: false }`
[INFO] [stdout] 9f67e09a83bc349b1470063861bf4ba7e7c8b610fc9f66bffa8fe85163094530
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 308a80d9cc7470e4958eae9abf8b85fc47f8ce7acb8f2ea75471e78757e261e4
[INFO] running `Command { std: "docker" "start" "-a" "308a80d9cc7470e4958eae9abf8b85fc47f8ce7acb8f2ea75471e78757e261e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling sparse v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/coo.rs:1156:17
[INFO] [stdout]      |
[INFO] [stdout] 1156 |     pub fn iter(&self) -> Iter<T> {
[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] 1156 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]      |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/coo.rs:1189:21
[INFO] [stdout]      |
[INFO] [stdout] 1189 |     pub fn iter_mut(&mut self) -> IterMut<T> {
[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] 1189 |     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]      |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/coo.rs:1156:17
[INFO] [stdout]      |
[INFO] [stdout] 1156 |     pub fn iter(&self) -> Iter<T> {
[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] 1156 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]      |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/coo.rs:1189:21
[INFO] [stdout]      |
[INFO] [stdout] 1189 |     pub fn iter_mut(&mut self) -> IterMut<T> {
[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] 1189 |     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
[INFO] [stdout]      |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "308a80d9cc7470e4958eae9abf8b85fc47f8ce7acb8f2ea75471e78757e261e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "308a80d9cc7470e4958eae9abf8b85fc47f8ce7acb8f2ea75471e78757e261e4", kill_on_drop: false }`
[INFO] [stdout] 308a80d9cc7470e4958eae9abf8b85fc47f8ce7acb8f2ea75471e78757e261e4