[INFO] updating cached repository https://github.com/kinnergit/rust_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 456cdecb920d1d6437fd263b482e25c995e071ea
[INFO] checking kinnergit/rust_learning against master#8ac1525e091d3db28e67adcbbd6db1e1deaa37fb for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkinnergit%2Frust_learning" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kinnergit/rust_learning on toolchain 8ac1525e091d3db28e67adcbbd6db1e1deaa37fb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kinnergit/rust_learning
[INFO] finished tweaking git repo https://github.com/kinnergit/rust_learning
[INFO] tweaked toml for git repo https://github.com/kinnergit/rust_learning written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/kinnergit/rust_learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "fetch" "--locked" "--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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "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] cc7fe0dccfb3d97d691722f4c1c072e3d28236105a8380ee400a3d66ea76ab3e
[INFO] running `Command { std: "docker" "start" "-a" "cc7fe0dccfb3d97d691722f4c1c072e3d28236105a8380ee400a3d66ea76ab3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc7fe0dccfb3d97d691722f4c1c072e3d28236105a8380ee400a3d66ea76ab3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc7fe0dccfb3d97d691722f4c1c072e3d28236105a8380ee400a3d66ea76ab3e", kill_on_drop: false }`
[INFO] [stdout] cc7fe0dccfb3d97d691722f4c1c072e3d28236105a8380ee400a3d66ea76ab3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e299419592592f3fea1d5f624509b1972e9511b69b3345914699f93c9e822e5
[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" "4e299419592592f3fea1d5f624509b1972e9511b69b3345914699f93c9e822e5", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0382]: assign to part of moved value: `*n2`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut n2 = Box::new(Node{data: 2, next: None});
[INFO] [stdout]    |         ------ move occurs because `n2` has type `std::boxed::Box<Node<i32>>`, which does not implement the `Copy` trait
[INFO] [stdout] 11 | 
[INFO] [stdout] 12 |     n1.next = Some(n2);
[INFO] [stdout]    |                    -- value moved here
[INFO] [stdout] 13 |     n2.next = Some(n1);
[INFO] [stdout]    |     ^^^^^^^ value partially assigned here after move
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_learning`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0382`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] [stdout] error[E0382]: assign to part of moved value: `*n2`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut n2 = Box::new(Node{data: 2, next: None});
[INFO] [stdout]    |         ------ move occurs because `n2` has type `std::boxed::Box<Node<i32>>`, which does not implement the `Copy` trait
[INFO] [stdout] 11 | 
[INFO] [stdout] 12 |     n1.next = Some(n2);
[INFO] [stdout]    |                    -- value moved here
[INFO] [stdout] 13 |     n2.next = Some(n1);
[INFO] [stdout]    |     ^^^^^^^ value partially assigned here after move
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0382`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4e299419592592f3fea1d5f624509b1972e9511b69b3345914699f93c9e822e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e299419592592f3fea1d5f624509b1972e9511b69b3345914699f93c9e822e5", kill_on_drop: false }`
[INFO] [stdout] 4e299419592592f3fea1d5f624509b1972e9511b69b3345914699f93c9e822e5