[INFO] cloning repository https://github.com/samsja/rusty-grad
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/samsja/rusty-grad" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamsja%2Frusty-grad", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamsja%2Frusty-grad'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 554c2a52de008ff919328d46b5bb94187ce292a8
[INFO] checking samsja/rusty-grad against try#79452e8441468c5568c20bfca2aa1fe75b645b2d for pr-152210
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamsja%2Frusty-grad" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/samsja/rusty-grad
[INFO] finished tweaking git repo https://github.com/samsja/rusty-grad
[INFO] tweaked toml for git repo https://github.com/samsja/rusty-grad written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/samsja/rusty-grad on toolchain 79452e8441468c5568c20bfca2aa1fe75b645b2d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+79452e8441468c5568c20bfca2aa1fe75b645b2d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/samsja/rusty-grad 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" "+79452e8441468c5568c20bfca2aa1fe75b645b2d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded matrixmultiply v0.3.1
[INFO] [stderr]   Downloaded ndarray v0.15.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+79452e8441468c5568c20bfca2aa1fe75b645b2d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8406c397d6204f13340623d3cab3a0e384a6f8908ab6112e502c4df9fe81d02c
[INFO] running `Command { std: "docker" "start" "-a" "8406c397d6204f13340623d3cab3a0e384a6f8908ab6112e502c4df9fe81d02c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8406c397d6204f13340623d3cab3a0e384a6f8908ab6112e502c4df9fe81d02c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8406c397d6204f13340623d3cab3a0e384a6f8908ab6112e502c4df9fe81d02c", kill_on_drop: false }`
[INFO] [stdout] 8406c397d6204f13340623d3cab3a0e384a6f8908ab6112e502c4df9fe81d02c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+79452e8441468c5568c20bfca2aa1fe75b645b2d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6534beffd3103b92007fbbba8ec74007c61b70b447ae7e68763a08974742272
[INFO] running `Command { std: "docker" "start" "-a" "c6534beffd3103b92007fbbba8ec74007c61b70b447ae7e68763a08974742272", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking matrixmultiply v0.3.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking ndarray v0.15.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rusty_grad v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/variable.rs:99:19
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn borrow(&self) -> Ref<Variable<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] 99 |     pub fn borrow(&self) -> Ref<'_, Variable<T>> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/variable.rs:103:23
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn borrow_mut(&mut self) -> RefMut<Variable<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] 103 |     pub fn borrow_mut(&mut self) -> RefMut<'_, Variable<T>> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/variable.rs:99:19
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn borrow(&self) -> Ref<Variable<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] 99 |     pub fn borrow(&self) -> Ref<'_, Variable<T>> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/variable.rs:103:23
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn borrow_mut(&mut self) -> RefMut<Variable<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] 103 |     pub fn borrow_mut(&mut self) -> RefMut<'_, Variable<T>> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.15s
[INFO] running `Command { std: "docker" "inspect" "c6534beffd3103b92007fbbba8ec74007c61b70b447ae7e68763a08974742272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6534beffd3103b92007fbbba8ec74007c61b70b447ae7e68763a08974742272", kill_on_drop: false }`
[INFO] [stdout] c6534beffd3103b92007fbbba8ec74007c61b70b447ae7e68763a08974742272
