[INFO] cloning repository https://github.com/xanahopper/too_many_lists
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xanahopper/too_many_lists" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxanahopper%2Ftoo_many_lists", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxanahopper%2Ftoo_many_lists'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c666f923d983ab93ddb5a8e7913d5545d3820e0f
[INFO] testing xanahopper/too_many_lists against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxanahopper%2Ftoo_many_lists" "/workspace/builds/worker-118/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-118/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xanahopper/too_many_lists on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xanahopper/too_many_lists
[INFO] finished tweaking git repo https://github.com/xanahopper/too_many_lists
[INFO] tweaked toml for git repo https://github.com/xanahopper/too_many_lists written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] crate git repo https://github.com/xanahopper/too_many_lists already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61b9c845b2211e2e8c6cbf9063419a9a2c38c459f3e12c6e6b0f9b1c5ef52bb3
[INFO] running `Command { std: "docker" "start" "-a" "61b9c845b2211e2e8c6cbf9063419a9a2c38c459f3e12c6e6b0f9b1c5ef52bb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61b9c845b2211e2e8c6cbf9063419a9a2c38c459f3e12c6e6b0f9b1c5ef52bb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61b9c845b2211e2e8c6cbf9063419a9a2c38c459f3e12c6e6b0f9b1c5ef52bb3", kill_on_drop: false }`
[INFO] [stdout] 61b9c845b2211e2e8c6cbf9063419a9a2c38c459f3e12c6e6b0f9b1c5ef52bb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56330c833771ee7f123d02856afb576ad7f7cb5f5a07df440ee244ef662968cb
[INFO] running `Command { std: "docker" "start" "-a" "56330c833771ee7f123d02856afb576ad7f7cb5f5a07df440ee244ef662968cb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling linked_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::List`
[INFO] [stdout]   --> src/first.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     use super::List;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/second.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::List`
[INFO] [stdout]    --> src/second.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     use super::List;
[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 45.75s
[INFO] running `Command { std: "docker" "inspect" "56330c833771ee7f123d02856afb576ad7f7cb5f5a07df440ee244ef662968cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56330c833771ee7f123d02856afb576ad7f7cb5f5a07df440ee244ef662968cb", kill_on_drop: false }`
[INFO] [stdout] 56330c833771ee7f123d02856afb576ad7f7cb5f5a07df440ee244ef662968cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12467bfb8200f8f206dacb22ed89cfc4f53f41bb1619002dc2acd6cd835f8066
[INFO] running `Command { std: "docker" "start" "-a" "12467bfb8200f8f206dacb22ed89cfc4f53f41bb1619002dc2acd6cd835f8066", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling linked_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::List`
[INFO] [stdout]   --> src/first.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     use super::List;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/second.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::List`
[INFO] [stdout]    --> src/second.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     use super::List;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/second.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.93s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/linked_list-18399837d18e34e2)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/linked_list-17454a77c2ceac82)
[INFO] running `Command { std: "docker" "inspect" "12467bfb8200f8f206dacb22ed89cfc4f53f41bb1619002dc2acd6cd835f8066", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12467bfb8200f8f206dacb22ed89cfc4f53f41bb1619002dc2acd6cd835f8066", kill_on_drop: false }`
[INFO] [stdout] 12467bfb8200f8f206dacb22ed89cfc4f53f41bb1619002dc2acd6cd835f8066
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 69b7623d9606d363726c81e4712920399cba7899323ac38d8b9c130fea6112c9
[INFO] running `Command { std: "docker" "start" "-a" "69b7623d9606d363726c81e4712920399cba7899323ac38d8b9c130fea6112c9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `super::List`
[INFO] [stdout] running 8 tests
[INFO] [stderr]   --> src/first.rs:53:9
[INFO] [stdout] test first::test::basics ... ok
[INFO] [stderr]    |
[INFO] [stdout] test second::test::basics ... ok
[INFO] [stderr] 53 |     use super::List;
[INFO] [stdout] test second::test::into_iter ... ok
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stdout] test second::test::iter_mut ... ok
[INFO] [stderr]    |
[INFO] [stdout] test second::test::iter ... ok
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] test second::test::peek ... ok
[INFO] [stderr] 
[INFO] [stdout] test third::test::basics ... ok
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stdout] test third::test::iter ... ok
[INFO] [stderr]  --> src/second.rs:1:5
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 1 | use std::mem;
[INFO] [stdout] 
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] running 0 tests
[INFO] [stderr] warning: unused import: `super::List`
[INFO] [stdout] 
[INFO] [stderr]    --> src/second.rs:110:9
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 110 |     use super::List;
[INFO] [stderr]     |         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `linked_list` (lib) generated 3 warnings
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/second.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `linked_list` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.49s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/linked_list-18399837d18e34e2)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/linked_list-17454a77c2ceac82)
[INFO] [stderr]    Doc-tests linked_list
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "69b7623d9606d363726c81e4712920399cba7899323ac38d8b9c130fea6112c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69b7623d9606d363726c81e4712920399cba7899323ac38d8b9c130fea6112c9", kill_on_drop: false }`
[INFO] [stdout] 69b7623d9606d363726c81e4712920399cba7899323ac38d8b9c130fea6112c9