[INFO] fetching crate deque_deck 0.2.1...
[INFO] checking deque_deck-0.2.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate deque_deck 0.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate deque_deck 0.2.1
[INFO] finished tweaking crates.io crate deque_deck 0.2.1
[INFO] tweaked toml for crates.io crate deque_deck 0.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate deque_deck 0.2.1 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]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.1)
[INFO] [stderr]       Adding rand_distr v0.4.3 (available: v0.5.1)
[INFO] [stderr]       Adding rand_xoshiro v0.6.0 (available: v0.7.0)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 0177a695f362e4dfda880fe13303ec7d3c6d1a08ca6ab074fcb69c5296da3751
[INFO] running `Command { std: "docker" "start" "-a" "0177a695f362e4dfda880fe13303ec7d3c6d1a08ca6ab074fcb69c5296da3751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0177a695f362e4dfda880fe13303ec7d3c6d1a08ca6ab074fcb69c5296da3751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0177a695f362e4dfda880fe13303ec7d3c6d1a08ca6ab074fcb69c5296da3751", kill_on_drop: false }`
[INFO] [stdout] 0177a695f362e4dfda880fe13303ec7d3c6d1a08ca6ab074fcb69c5296da3751
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8e6d9d91e73caca5bbb3d8f7c998910a73c1b1e034d7715094e15023009497a5
[INFO] running `Command { std: "docker" "start" "-a" "8e6d9d91e73caca5bbb3d8f7c998910a73c1b1e034d7715094e15023009497a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking deque_deck v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `shuffling::*`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use shuffling::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shuffling::*`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use shuffling::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/deck.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn iter(&self) -> std::collections::vec_deque::Iter<T> {
[INFO] [stdout]    |                 ^^^^^     ------------------------------------ the lifetime gets resolved as `'_`
[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 remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn iter(&self) -> std::collections::vec_deque::Iter<'_, T> {
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/deck.rs:81:21
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter_mut(&mut self) -> std::collections::vec_deque::IterMut<T> {
[INFO] [stdout]    |                     ^^^^^^^^^     --------------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter_mut(&mut self) -> std::collections::vec_deque::IterMut<'_, T> {
[INFO] [stdout]    |                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/deck.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn iter(&self) -> std::collections::vec_deque::Iter<T> {
[INFO] [stdout]    |                 ^^^^^     ------------------------------------ the lifetime gets resolved as `'_`
[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 remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn iter(&self) -> std::collections::vec_deque::Iter<'_, T> {
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/deck.rs:81:21
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter_mut(&mut self) -> std::collections::vec_deque::IterMut<T> {
[INFO] [stdout]    |                     ^^^^^^^^^     --------------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter_mut(&mut self) -> std::collections::vec_deque::IterMut<'_, T> {
[INFO] [stdout]    |                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.54s
[INFO] running `Command { std: "docker" "inspect" "8e6d9d91e73caca5bbb3d8f7c998910a73c1b1e034d7715094e15023009497a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e6d9d91e73caca5bbb3d8f7c998910a73c1b1e034d7715094e15023009497a5", kill_on_drop: false }`
[INFO] [stdout] 8e6d9d91e73caca5bbb3d8f7c998910a73c1b1e034d7715094e15023009497a5