[INFO] fetching crate chainlink 0.1.0...
[INFO] testing chainlink-0.1.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate chainlink 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate chainlink 0.1.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chainlink 0.1.0
[INFO] finished tweaking crates.io crate chainlink 0.1.0
[INFO] tweaked toml for crates.io crate chainlink 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02fa5433243924a602ceac411108b04c7bfcb0495a29c5358a84aca8c5e4781b
[INFO] running `Command { std: "docker" "start" "-a" "02fa5433243924a602ceac411108b04c7bfcb0495a29c5358a84aca8c5e4781b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02fa5433243924a602ceac411108b04c7bfcb0495a29c5358a84aca8c5e4781b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02fa5433243924a602ceac411108b04c7bfcb0495a29c5358a84aca8c5e4781b", kill_on_drop: false }`
[INFO] [stdout] 02fa5433243924a602ceac411108b04c7bfcb0495a29c5358a84aca8c5e4781b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae488aa49b0bbbb042e36994c874f9d55a160607c417cef65f3c2f21625d0728
[INFO] running `Command { std: "docker" "start" "-a" "ae488aa49b0bbbb042e36994c874f9d55a160607c417cef65f3c2f21625d0728", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling thunderdome v0.4.2
[INFO] [stderr]    Compiling chainlink v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `list`
[INFO] [stdout]   --> src/iter_links.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     list: &'a mut LinkedList<T>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fwd_pos`
[INFO] [stdout]   --> src/iter_links.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fwd_pos: Option<Index>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rev_pos`
[INFO] [stdout]   --> src/iter_links.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     rev_pos: Option<Index>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "ae488aa49b0bbbb042e36994c874f9d55a160607c417cef65f3c2f21625d0728", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae488aa49b0bbbb042e36994c874f9d55a160607c417cef65f3c2f21625d0728", kill_on_drop: false }`
[INFO] [stdout] ae488aa49b0bbbb042e36994c874f9d55a160607c417cef65f3c2f21625d0728
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fef5f4676f30faf77924c0970088bf735014053a677782b0d606b631bc0b5be0
[INFO] running `Command { std: "docker" "start" "-a" "fef5f4676f30faf77924c0970088bf735014053a677782b0d606b631bc0b5be0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: field is never read: `list`
[INFO] [stdout]   --> src/iter_links.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     list: &'a mut LinkedList<T>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fwd_pos`
[INFO] [stdout]   --> src/iter_links.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fwd_pos: Option<Index>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chainlink v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `rev_pos`
[INFO] [stdout]   --> src/iter_links.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     rev_pos: Option<Index>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `list`
[INFO] [stdout]   --> src/iter_links.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     list: &'a mut LinkedList<T>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fwd_pos`
[INFO] [stdout]   --> src/iter_links.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fwd_pos: Option<Index>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rev_pos`
[INFO] [stdout]   --> src/iter_links.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     rev_pos: Option<Index>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "fef5f4676f30faf77924c0970088bf735014053a677782b0d606b631bc0b5be0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef5f4676f30faf77924c0970088bf735014053a677782b0d606b631bc0b5be0", kill_on_drop: false }`
[INFO] [stdout] fef5f4676f30faf77924c0970088bf735014053a677782b0d606b631bc0b5be0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ca88b8cc0708d05713eb34ba0c4b857dd2b752734d91a3bebc7ca162eca921a7
[INFO] running `Command { std: "docker" "start" "-a" "ca88b8cc0708d05713eb34ba0c4b857dd2b752734d91a3bebc7ca162eca921a7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: field is never read: `list`
[INFO] [stderr]   --> src/iter_links.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     list: &'a mut LinkedList<T>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `fwd_pos`
[INFO] [stderr]   --> src/iter_links.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fwd_pos: Option<Index>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `rev_pos`
[INFO] [stderr]   --> src/iter_links.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     rev_pos: Option<Index>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `chainlink` (lib) generated 3 warnings
[INFO] [stderr] warning: `chainlink` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chainlink-49f51c29fe24d54e)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::size_of_node ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests chainlink
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test src/lib.rs - LinkedList<T>::get_mut (line 111) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::is_empty (line 340) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::head_mut (line 144) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::len (line 321) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::push_head (line 211) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::new (line 78) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::tail_mut (line 173) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::get (line 97) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::iter_fast_mut (line 444) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::into_vec (line 398) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::head (line 129) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::remove (line 282) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::push_tail (line 246) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::pop_head (line 186) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::iter_fast (line 424) ... ok
[INFO] [stdout] test src/lib.rs - (line 3) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::iter_links (line 360) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::pop_tail (line 199) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::tail (line 158) ... ok
[INFO] [stdout] test src/lib.rs - LinkedList<T>::iter_links (line 376) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.42s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ca88b8cc0708d05713eb34ba0c4b857dd2b752734d91a3bebc7ca162eca921a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca88b8cc0708d05713eb34ba0c4b857dd2b752734d91a3bebc7ca162eca921a7", kill_on_drop: false }`
[INFO] [stdout] ca88b8cc0708d05713eb34ba0c4b857dd2b752734d91a3bebc7ca162eca921a7