[INFO] fetching crate lists 2.3.0...
[INFO] testing lists-2.3.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate lists 2.3.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate lists 2.3.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-13/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" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5f39103e28d950470ef94683d6c0e5e01c8ab36fe47045279e526aacc25d8102
[INFO] running `Command { std: "docker" "start" "-a" "5f39103e28d950470ef94683d6c0e5e01c8ab36fe47045279e526aacc25d8102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f39103e28d950470ef94683d6c0e5e01c8ab36fe47045279e526aacc25d8102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f39103e28d950470ef94683d6c0e5e01c8ab36fe47045279e526aacc25d8102", kill_on_drop: false }`
[INFO] [stdout] 5f39103e28d950470ef94683d6c0e5e01c8ab36fe47045279e526aacc25d8102
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 49a23ea6af13c95e14d4d580c76c975fc284af8bdba65fd97000b217e1ea48b2
[INFO] running `Command { std: "docker" "start" "-a" "49a23ea6af13c95e14d4d580c76c975fc284af8bdba65fd97000b217e1ea48b2", 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 1.13s
[INFO] running `Command { std: "docker" "inspect" "49a23ea6af13c95e14d4d580c76c975fc284af8bdba65fd97000b217e1ea48b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49a23ea6af13c95e14d4d580c76c975fc284af8bdba65fd97000b217e1ea48b2", kill_on_drop: false }`
[INFO] [stdout] 49a23ea6af13c95e14d4d580c76c975fc284af8bdba65fd97000b217e1ea48b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9ddb882482086f7cdcc74019e5c0c022f121daca8c4b0d1eedac80f4e41d8fac
[INFO] running `Command { std: "docker" "start" "-a" "9ddb882482086f7cdcc74019e5c0c022f121daca8c4b0d1eedac80f4e41d8fac", kill_on_drop: false }`
[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] [stderr]    Compiling lists v2.3.0 (/opt/rustwide/workdir)
[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 test [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `Command { std: "docker" "inspect" "9ddb882482086f7cdcc74019e5c0c022f121daca8c4b0d1eedac80f4e41d8fac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ddb882482086f7cdcc74019e5c0c022f121daca8c4b0d1eedac80f4e41d8fac", kill_on_drop: false }`
[INFO] [stdout] 9ddb882482086f7cdcc74019e5c0c022f121daca8c4b0d1eedac80f4e41d8fac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8302bb5488484a73e15fb1655611b464c6dd3059c9850190d6f4a26a9088d193
[INFO] running `Command { std: "docker" "start" "-a" "8302bb5488484a73e15fb1655611b464c6dd3059c9850190d6f4a26a9088d193", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `front`
[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-688793a290ab3116)
[INFO] [stdout] 
[INFO] [stdout] running 34 tests
[INFO] [stdout] test dynamic::list::tests::clear ... ok
[INFO] [stdout] test dynamic::list::tests::from_iter ... ok
[INFO] [stdout] test dynamic::list::tests::front_back ... ok
[INFO] [stdout] test dynamic::list::tests::index ... ok
[INFO] [stdout] test dynamic::list::tests::get ... ok
[INFO] [stdout] test dynamic::list::tests::truncate ... ok
[INFO] [stdout] test dynamic::list::tests::with_capacity ... ok
[INFO] [stdout] test linked::doubly::tests::eq ... ok
[INFO] [stdout] test linked::doubly::tests::from_iter ... ok
[INFO] [stdout] test linked::doubly::tests::front_back ... ok
[INFO] [stdout] test linked::doubly::tests::get ... ok
[INFO] [stdout] test linked::doubly::tests::index ... ok
[INFO] [stdout] test linked::doubly::tests::iter ... ok
[INFO] [stdout] test linked::doubly::tests::new ... 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::new ... ok
[INFO] [stdout] test linked::singly::tests::node_into ... ok
[INFO] [stdout] test linked::singly::tests::pop_front ... ok
[INFO] [stdout] test linked::doubly::tests::node_into ... ok
[INFO] [stdout] test linked::singly::tests::push_back ... ok
[INFO] [stdout] test linked::singly::tests::push_front ... ok
[INFO] [stdout] test dynamic::list::tests::list_macro ... ok
[INFO] [stdout] test dynamic::list::tests::eq_ne ... ok
[INFO] [stdout] test linked::singly::tests::sl_list_macro ... ok
[INFO] [stdout] test linked::singly::tests::remove_front ... ok
[INFO] [stdout] test dynamic::list::tests::display ... ok
[INFO] [stdout] test dynamic::list::tests::push ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 34 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8302bb5488484a73e15fb1655611b464c6dd3059c9850190d6f4a26a9088d193", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8302bb5488484a73e15fb1655611b464c6dd3059c9850190d6f4a26a9088d193", kill_on_drop: false }`
[INFO] [stdout] 8302bb5488484a73e15fb1655611b464c6dd3059c9850190d6f4a26a9088d193