[INFO] cloning repository https://github.com/taskie/rust-memo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/taskie/rust-memo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaskie%2Frust-memo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaskie%2Frust-memo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 389718524416253649e58ce9b1a285f3b405275d
[INFO] testing taskie/rust-memo against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaskie%2Frust-memo" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/taskie/rust-memo on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/taskie/rust-memo
[INFO] finished tweaking git repo https://github.com/taskie/rust-memo
[INFO] tweaked toml for git repo https://github.com/taskie/rust-memo written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/taskie/rust-memo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d69cc49425166f9bd2d07ac16efd542e30fc23d48e8e0f0de5ae750063541cf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6d69cc49425166f9bd2d07ac16efd542e30fc23d48e8e0f0de5ae750063541cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d69cc49425166f9bd2d07ac16efd542e30fc23d48e8e0f0de5ae750063541cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d69cc49425166f9bd2d07ac16efd542e30fc23d48e8e0f0de5ae750063541cf", kill_on_drop: false }`
[INFO] [stdout] 6d69cc49425166f9bd2d07ac16efd542e30fc23d48e8e0f0de5ae750063541cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc5b33265923149b231b3173dbe1ee6c3b411983c6d1094986ad5322bead9bd9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fc5b33265923149b231b3173dbe1ee6c3b411983c6d1094986ad5322bead9bd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling memo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `s1`
[INFO] [stdout]  --> src/memo1.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct S2_1 { s1: Option<S1> }
[INFO] [stdout]   |               ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `s1`
[INFO] [stdout]  --> src/memo1.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct S2_2<'a> { s1: Option<&'a S1> }
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `f1`
[INFO] [stdout]   --> src/memo1.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn f1(&self) -> S1 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `f1`
[INFO] [stdout]   --> src/memo1.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn f1(&self) -> &S1 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fc5b33265923149b231b3173dbe1ee6c3b411983c6d1094986ad5322bead9bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc5b33265923149b231b3173dbe1ee6c3b411983c6d1094986ad5322bead9bd9", kill_on_drop: false }`
[INFO] [stdout] fc5b33265923149b231b3173dbe1ee6c3b411983c6d1094986ad5322bead9bd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c73a5bc2c0bdfa1933e0b373e45b4d92cfe0dc0c5913f745084491e1c70ff17d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c73a5bc2c0bdfa1933e0b373e45b4d92cfe0dc0c5913f745084491e1c70ff17d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: field is never read: `s1`
[INFO] [stdout]  --> src/memo1.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct S2_1 { s1: Option<S1> }
[INFO] [stdout]   |               ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `s1`
[INFO] [stdout]  --> src/memo1.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct S2_2<'a> { s1: Option<&'a S1> }
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `f1`
[INFO] [stdout]   --> src/memo1.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn f1(&self) -> S1 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `f1`
[INFO] [stdout]   --> src/memo1.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn f1(&self) -> &S1 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling memo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "c73a5bc2c0bdfa1933e0b373e45b4d92cfe0dc0c5913f745084491e1c70ff17d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c73a5bc2c0bdfa1933e0b373e45b4d92cfe0dc0c5913f745084491e1c70ff17d", kill_on_drop: false }`
[INFO] [stdout] c73a5bc2c0bdfa1933e0b373e45b4d92cfe0dc0c5913f745084491e1c70ff17d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1dd7ef3bb22dec2f3fa185ac68e1199ef94d1ee2b98a85fe6139281ed7eac95c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1dd7ef3bb22dec2f3fa185ac68e1199ef94d1ee2b98a85fe6139281ed7eac95c", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `s1`
[INFO] [stderr]  --> src/memo1.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct S2_1 { s1: Option<S1> }
[INFO] [stderr]   |               ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `s1`
[INFO] [stderr]  --> src/memo1.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct S2_2<'a> { s1: Option<&'a S1> }
[INFO] [stderr]   |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `f1`
[INFO] [stderr]   --> src/memo1.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn f1(&self) -> S1 {
[INFO] [stderr]    |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `f1`
[INFO] [stderr]   --> src/memo1.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn f1(&self) -> &S1 {
[INFO] [stderr]    |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: `memo` (lib) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/memo-4e47b7e1de41f936)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests memo
[INFO] [stdout] running 2 tests
[INFO] [stdout] test memo1::test_1 ... ok
[INFO] [stdout] test memo1::test_2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1dd7ef3bb22dec2f3fa185ac68e1199ef94d1ee2b98a85fe6139281ed7eac95c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dd7ef3bb22dec2f3fa185ac68e1199ef94d1ee2b98a85fe6139281ed7eac95c", kill_on_drop: false }`
[INFO] [stdout] 1dd7ef3bb22dec2f3fa185ac68e1199ef94d1ee2b98a85fe6139281ed7eac95c