[INFO] cloning repository https://github.com/Levio-z/too-many-linked-lists
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Levio-z/too-many-linked-lists" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLevio-z%2Ftoo-many-linked-lists", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLevio-z%2Ftoo-many-linked-lists'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2754bdfca270e658d2b7f805c2cc75a61dc29a9c
[INFO] fixing Levio-z/too-many-linked-lists against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLevio-z%2Ftoo-many-linked-lists" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Levio-z/too-many-linked-lists
[INFO] finished tweaking git repo https://github.com/Levio-z/too-many-linked-lists
[INFO] tweaked toml for git repo https://github.com/Levio-z/too-many-linked-lists written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Levio-z/too-many-linked-lists on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Levio-z/too-many-linked-lists already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f886298b3c61444350a3fa4c9b4f2252a65cd29ea3a86ca205a732e1b443d90e
[INFO] running `Command { std: "docker" "start" "f886298b3c61444350a3fa4c9b4f2252a65cd29ea3a86ca205a732e1b443d90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f886298b3c61444350a3fa4c9b4f2252a65cd29ea3a86ca205a732e1b443d90e" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f886298b3c61444350a3fa4c9b4f2252a65cd29ea3a86ca205a732e1b443d90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f886298b3c61444350a3fa4c9b4f2252a65cd29ea3a86ca205a732e1b443d90e" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]     Checking lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `as_ptr` found for struct `Ref<'_, &fourth::Node<T>>` in the current scope
[INFO] [stdout]    --> src/fourth.rs:258:37
[INFO] [stdout]     |
[INFO] [stdout] 258 |         if let Some(next_rc) = elem.as_ptr().next.clone() {
[INFO] [stdout]     |                                     ^^^^^^ method not found in `Ref<'_, &fourth::Node<T>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/fourth.rs:262:14
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl<'a, T> Iterator for Iter<'a, T> {
[INFO] [stdout]     |          - expected this type parameter
[INFO] [stdout] ...
[INFO] [stdout] 262 |         Some(elem)
[INFO] [stdout]     |         ---- ^^^^ expected `Ref<'_, T>`, found `Ref<'_, &Node<T>>`
[INFO] [stdout]     |         |
[INFO] [stdout]     |         arguments to this enum variant are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `Ref<'_, T>`
[INFO] [stdout]                found struct `Ref<'_, &fourth::Node<T>>`
[INFO] [stdout] help: the type constructed contains `Ref<'_, &fourth::Node<T>>` due to the type of the argument passed
[INFO] [stdout]    --> src/fourth.rs:262:9
[INFO] [stdout]     |
[INFO] [stdout] 262 |         Some(elem)
[INFO] [stdout]     |         ^^^^^----^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              this argument influences the type of `Some`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]    --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/core/src/option.rs:605:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_ptr` found for struct `Ref<'_, &fourth::Node<T>>` in the current scope
[INFO] [stdout]    --> src/fourth.rs:258:37
[INFO] [stdout]     |
[INFO] [stdout] 258 |         if let Some(next_rc) = elem.as_ptr().next.clone() {
[INFO] [stdout]     |                                     ^^^^^^ method not found in `Ref<'_, &fourth::Node<T>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/fourth.rs:262:14
[INFO] [stdout]     |
[INFO] [stdout] 249 | impl<'a, T> Iterator for Iter<'a, T> {
[INFO] [stdout]     |          - expected this type parameter
[INFO] [stdout] ...
[INFO] [stdout] 262 |         Some(elem)
[INFO] [stdout]     |         ---- ^^^^ expected `Ref<'_, T>`, found `Ref<'_, &Node<T>>`
[INFO] [stdout]     |         |
[INFO] [stdout]     |         arguments to this enum variant are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `Ref<'_, T>`
[INFO] [stdout]                found struct `Ref<'_, &fourth::Node<T>>`
[INFO] [stdout] help: the type constructed contains `Ref<'_, &fourth::Node<T>>` due to the type of the argument passed
[INFO] [stdout]    --> src/fourth.rs:262:9
[INFO] [stdout]     |
[INFO] [stdout] 262 |         Some(elem)
[INFO] [stdout]     |         ^^^^^----^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              this argument influences the type of `Some`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]    --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/core/src/option.rs:605:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `borrowed2`
[INFO] [stdout]    --> src/second.rs:206:13
[INFO] [stdout]     |
[INFO] [stdout] 206 |         let borrowed2 = s.as_ref();
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_borrowed2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cur` is never read
[INFO] [stdout]    --> src/second.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 276 |         cur = cur.next.as_mut().unwrap();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cur` is never read
[INFO] [stdout]    --> src/second.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |         cur = cur.next.as_mut().unwrap();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lists` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `lists` (lib test) due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f886298b3c61444350a3fa4c9b4f2252a65cd29ea3a86ca205a732e1b443d90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f886298b3c61444350a3fa4c9b4f2252a65cd29ea3a86ca205a732e1b443d90e", kill_on_drop: false }`
[INFO] [stdout] f886298b3c61444350a3fa4c9b4f2252a65cd29ea3a86ca205a732e1b443d90e
