[INFO] fetching crate lists 2.3.0...
[INFO] testing lists-2.3.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate lists 2.3.0 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate lists 2.3.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lists 2.3.0
[INFO] finished tweaking crates.io crate lists 2.3.0
[INFO] tweaked toml for crates.io crate lists 2.3.0 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate crates.io crate lists 2.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 076d6005e8de6adc39f5b91f5037a6e41b9f5513eed6953b2759f3644b4ddc4d
[INFO] running `Command { std: "docker" "start" "-a" "076d6005e8de6adc39f5b91f5037a6e41b9f5513eed6953b2759f3644b4ddc4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "076d6005e8de6adc39f5b91f5037a6e41b9f5513eed6953b2759f3644b4ddc4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "076d6005e8de6adc39f5b91f5037a6e41b9f5513eed6953b2759f3644b4ddc4d", kill_on_drop: false }`
[INFO] [stdout] 076d6005e8de6adc39f5b91f5037a6e41b9f5513eed6953b2759f3644b4ddc4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6e3385aec181a5323357d2c6ad2f69e85777e4584d1af24e9a8aa015d75f33f
[INFO] running `Command { std: "docker" "start" "-a" "e6e3385aec181a5323357d2c6ad2f69e85777e4584d1af24e9a8aa015d75f33f", kill_on_drop: false }`
[INFO] [stderr]    Compiling lists v2.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `front`
[INFO] [stdout]    --> src/dynamic/list/mod.rs:284:8
[INFO] [stdout]     |
[INFO] [stdout] 284 |     fn front(&self) -> Option<&T> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `back`
[INFO] [stdout]    --> src/dynamic/list/mod.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 296 |     fn back(&self) -> Option<&T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `front_mut`
[INFO] [stdout]    --> src/dynamic/list/mod.rs:308:8
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn front_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `back_mut`
[INFO] [stdout]    --> src/dynamic/list/mod.rs:320:8
[INFO] [stdout]     |
[INFO] [stdout] 320 |     fn back_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "e6e3385aec181a5323357d2c6ad2f69e85777e4584d1af24e9a8aa015d75f33f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6e3385aec181a5323357d2c6ad2f69e85777e4584d1af24e9a8aa015d75f33f", kill_on_drop: false }`
[INFO] [stdout] e6e3385aec181a5323357d2c6ad2f69e85777e4584d1af24e9a8aa015d75f33f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7525522eed4b04abc780ceaefa9b90f0515cacdbec679e323a433db452180317
[INFO] running `Command { std: "docker" "start" "-a" "7525522eed4b04abc780ceaefa9b90f0515cacdbec679e323a433db452180317", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: associated function is never used: `front`
[INFO] [stdout]    --> src/dynamic/list/mod.rs:284:8
[INFO] [stdout]     |
[INFO] [stdout] 284 |     fn front(&self) -> Option<&T> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `back`
[INFO] [stdout]    --> src/dynamic/list/mod.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 296 |     fn back(&self) -> Option<&T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `front_mut`
[INFO] [stdout]    --> src/dynamic/list/mod.rs:308:8
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn front_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `back_mut`
[INFO] [stdout]    --> src/dynamic/list/mod.rs:320:8
[INFO] [stdout]     |
[INFO] [stdout] 320 |     fn back_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lists v2.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "7525522eed4b04abc780ceaefa9b90f0515cacdbec679e323a433db452180317", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7525522eed4b04abc780ceaefa9b90f0515cacdbec679e323a433db452180317", kill_on_drop: false }`
[INFO] [stdout] 7525522eed4b04abc780ceaefa9b90f0515cacdbec679e323a433db452180317
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7b433a8a046060de5052635d776ef073f3741806427e448355eeccf89ba887f7
[INFO] running `Command { std: "docker" "start" "-a" "7b433a8a046060de5052635d776ef073f3741806427e448355eeccf89ba887f7", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: associated function is never used: `front`
[INFO] [stdout] running 34 tests
[INFO] [stderr]    --> src/dynamic/list/mod.rs:284:8
[INFO] [stderr]     |
[INFO] [stderr] 284 |     fn front(&self) -> Option<&T> {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `back`
[INFO] [stderr]    --> src/dynamic/list/mod.rs:296:8
[INFO] [stderr]     |
[INFO] [stderr] 296 |     fn back(&self) -> Option<&T> {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `front_mut`
[INFO] [stderr]    --> src/dynamic/list/mod.rs:308:8
[INFO] [stderr]     |
[INFO] [stderr] 308 |     fn front_mut(&mut self) -> Option<&mut T> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `back_mut`
[INFO] [stderr]    --> src/dynamic/list/mod.rs:320:8
[INFO] [stderr]     |
[INFO] [stderr] 320 |     fn back_mut(&mut self) -> Option<&mut T> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `lists` (lib) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lists-290ac1d0d2208569)
[INFO] [stdout] test dynamic::list::tests::eq_ne ... ok
[INFO] [stdout] test dynamic::list::tests::from_iter ... ok
[INFO] [stdout] test dynamic::list::tests::with_capacity ... ok
[INFO] [stdout] test dynamic::list::tests::get ... ok
[INFO] [stdout] test dynamic::list::tests::front_back ... ok
[INFO] [stdout] test dynamic::list::tests::index ... ok
[INFO] [stdout] test dynamic::list::tests::list_macro ... ok
[INFO] [stdout] test dynamic::list::tests::clear ... ok
[INFO] [stdout] test dynamic::list::tests::display ... ok
[INFO] [stdout] test linked::doubly::tests::eq ... ok
[INFO] [stdout] test dynamic::list::tests::truncate ... ok
[INFO] [stdout] test linked::doubly::tests::front_back ... ok
[INFO] [stdout] test dynamic::list::tests::push ... ok
[INFO] [stdout] test linked::doubly::tests::from_iter ... ok
[INFO] [stdout] test linked::doubly::tests::get ... ok
[INFO] [stdout] test linked::doubly::tests::iter ... ok
[INFO] [stdout] test linked::doubly::tests::new ... ok
[INFO] [stdout] test linked::doubly::tests::node_into ... ok
[INFO] [stdout] test linked::doubly::tests::pop ... ok
[INFO] [stdout] test linked::doubly::tests::push ... ok
[INFO] [stdout] test linked::doubly::tests::remove ... ok
[INFO] [stdout] test linked::singly::tests::back ... ok
[INFO] [stdout] test linked::singly::tests::eq ... ok
[INFO] [stdout] test linked::singly::tests::front ... ok
[INFO] [stdout] test linked::singly::tests::get ... ok
[INFO] [stdout] test linked::singly::tests::iter ... ok
[INFO] [stdout] test linked::singly::tests::node_into ... ok
[INFO] [stdout] test linked::singly::tests::pop_front ... ok
[INFO] [stdout] test linked::singly::tests::push_back ... ok
[INFO] [stdout] test linked::singly::tests::push_front ... ok
[INFO] [stdout] test linked::singly::tests::remove_front ... ok
[INFO] [stdout] test linked::singly::tests::sl_list_macro ... ok
[INFO] [stdout] test linked::doubly::tests::index ... ok
[INFO] [stdout] test linked::singly::tests::new ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 34 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7b433a8a046060de5052635d776ef073f3741806427e448355eeccf89ba887f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b433a8a046060de5052635d776ef073f3741806427e448355eeccf89ba887f7", kill_on_drop: false }`
[INFO] [stdout] 7b433a8a046060de5052635d776ef073f3741806427e448355eeccf89ba887f7