[INFO] cloning repository https://github.com/dabevlohn/lock-or-not
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dabevlohn/lock-or-not" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdabevlohn%2Flock-or-not", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdabevlohn%2Flock-or-not'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3e2057e8b7e95d29bc12f283505e14518ef2ae2
[INFO] fixing dabevlohn/lock-or-not 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%2Fdabevlohn%2Flock-or-not" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dabevlohn/lock-or-not
[INFO] finished tweaking git repo https://github.com/dabevlohn/lock-or-not
[INFO] tweaked toml for git repo https://github.com/dabevlohn/lock-or-not written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dabevlohn/lock-or-not 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/dabevlohn/lock-or-not 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-1-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e50d5ecaed093811e32ca3737d994a00088ed3a36882e1e37b8013600b5cdc9b
[INFO] running `Command { std: "docker" "start" "e50d5ecaed093811e32ca3737d994a00088ed3a36882e1e37b8013600b5cdc9b", 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" "e50d5ecaed093811e32ca3737d994a00088ed3a36882e1e37b8013600b5cdc9b" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e50d5ecaed093811e32ca3737d994a00088ed3a36882e1e37b8013600b5cdc9b", 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" "e50d5ecaed093811e32ca3737d994a00088ed3a36882e1e37b8013600b5cdc9b" "/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 dyn-stat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `data` and `next` are never read
[INFO] [stdout]   --> examples/1_workshop_10.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | struct Node<'a, T> {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout]  9 |     data: T,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     next: Option<&'a Node<'a, T>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/1_workshop_5.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut node2 = Node1 {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/1_workshop_5.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut node3 = Node1 {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node2`
[INFO] [stdout]   --> examples/1_workshop_5.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut node2 = Node1 {
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node3`
[INFO] [stdout]   --> examples/1_workshop_5.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut node3 = Node1 {
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `data` and `next` are never read
[INFO] [stdout]  --> examples/1_workshop_5.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Node1<'a, T> {
[INFO] [stdout]   |        ----- fields in this struct
[INFO] [stdout] 3 |     data: T,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     next: Option<&'a mut Node1<'a, T>>, // ❌ Problematic!
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node2` is never constructed
[INFO] [stdout]  --> examples/1_workshop_5.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Node2<'a, T> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `1_workshop_11`
[INFO] [stdout]   --> examples/1_workshop_11.rs:34:2
[INFO] [stdout]    |
[INFO] [stdout] 34 | }
[INFO] [stdout]    |  ^ consider adding a `main` function to `examples/1_workshop_11.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0609]: no field `node` on type `T`
[INFO] [stdout]   --> examples/1_workshop_11.rs:15:50
[INFO] [stdout]    |
[INFO] [stdout] 15 |             let offset = std::mem::offset_of!(T, node);
[INFO] [stdout]    |                                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0601, E0609.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dyn-stat` (example "1_workshop_11") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `node2`
[INFO] [stdout]   --> examples/1_workshop_6.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let node2 = Node::new(2);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_node2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node3`
[INFO] [stdout]   --> examples/1_workshop_6.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let node3 = Rc::new(Node {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_node3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `data` and `next` are never read
[INFO] [stdout]  --> examples/1_workshop_6.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Node<T> {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 5 |     data: T,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     next: Option<Rc<Node<T>>>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> examples/1_workshop_8.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Node<T> {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 8 |     data: T,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> examples/1_workshop_7.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node<T> {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 6 |     data: T,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e50d5ecaed093811e32ca3737d994a00088ed3a36882e1e37b8013600b5cdc9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e50d5ecaed093811e32ca3737d994a00088ed3a36882e1e37b8013600b5cdc9b", kill_on_drop: false }`
[INFO] [stdout] e50d5ecaed093811e32ca3737d994a00088ed3a36882e1e37b8013600b5cdc9b
