[INFO] fetching crate iron_torch 0.1.18...
[INFO] checking iron_torch-0.1.18 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate iron_torch 0.1.18 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate iron_torch 0.1.18
[INFO] finished tweaking crates.io crate iron_torch 0.1.18
[INFO] tweaked toml for crates.io crate iron_torch 0.1.18 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate iron_torch 0.1.18 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63b5ebec64121cde7a80bf1b4e9c5f3002c253b84779ea1fb46239f97b0faf7b
[INFO] running `Command { std: "docker" "start" "-a" "63b5ebec64121cde7a80bf1b4e9c5f3002c253b84779ea1fb46239f97b0faf7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63b5ebec64121cde7a80bf1b4e9c5f3002c253b84779ea1fb46239f97b0faf7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63b5ebec64121cde7a80bf1b4e9c5f3002c253b84779ea1fb46239f97b0faf7b", kill_on_drop: false }`
[INFO] [stdout] 63b5ebec64121cde7a80bf1b4e9c5f3002c253b84779ea1fb46239f97b0faf7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fe87d4123f729fff4b972779708e95c8a8c93aeed227eb4721bafc4d763f6a8
[INFO] running `Command { std: "docker" "start" "-a" "1fe87d4123f729fff4b972779708e95c8a8c93aeed227eb4721bafc4d763f6a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking iron_torch v0.1.18 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iron_torch/mod.rs:12:94
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new<'a>(input_size: usize, output_size: usize, activation: activation::Activation<'a>) -> Layer {
[INFO] [stdout]    |                                                                                              ^^      ----- the lifetime gets resolved as `'a`
[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 consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new<'a>(input_size: usize, output_size: usize, activation: activation::Activation<'a>) -> Layer<'a> {
[INFO] [stdout]    |                                                                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iron_torch/mod.rs:12:94
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new<'a>(input_size: usize, output_size: usize, activation: activation::Activation<'a>) -> Layer {
[INFO] [stdout]    |                                                                                              ^^      ----- the lifetime gets resolved as `'a`
[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 consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new<'a>(input_size: usize, output_size: usize, activation: activation::Activation<'a>) -> Layer<'a> {
[INFO] [stdout]    |                                                                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.41s
[INFO] running `Command { std: "docker" "inspect" "1fe87d4123f729fff4b972779708e95c8a8c93aeed227eb4721bafc4d763f6a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fe87d4123f729fff4b972779708e95c8a8c93aeed227eb4721bafc4d763f6a8", kill_on_drop: false }`
[INFO] [stdout] 1fe87d4123f729fff4b972779708e95c8a8c93aeed227eb4721bafc4d763f6a8