[INFO] cloning repository https://github.com/sehyunsix/rust-study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sehyunsix/rust-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsehyunsix%2Frust-study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsehyunsix%2Frust-study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10b81043c6c3938afcea137e5960d710616e2a8f
[INFO] fixing sehyunsix/rust-study 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%2Fsehyunsix%2Frust-study" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sehyunsix/rust-study
[INFO] finished tweaking git repo https://github.com/sehyunsix/rust-study
[INFO] tweaked toml for git repo https://github.com/sehyunsix/rust-study written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sehyunsix/rust-study 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/sehyunsix/rust-study 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-7-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 1cbd8c068fa67c9590a42eb39f9a6d22a92a75eb15c150698e5a08c81753b6cc
[INFO] running `Command { std: "docker" "start" "1cbd8c068fa67c9590a42eb39f9a6d22a92a75eb15c150698e5a08c81753b6cc", 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" "1cbd8c068fa67c9590a42eb39f9a6d22a92a75eb15c150698e5a08c81753b6cc" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cbd8c068fa67c9590a42eb39f9a6d22a92a75eb15c150698e5a08c81753b6cc", 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" "1cbd8c068fa67c9590a42eb39f9a6d22a92a75eb15c150698e5a08c81753b6cc" "/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 ex1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `closurescapturedvaluesout`
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider adding a `main` function to `examples/closurescapturedvaluesout.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> examples/shareborrowshareowner.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 |   let b = &x;
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> examples/shareborrowshareowner.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct  Data {
[INFO] [stdout]   |         ---- field in this struct
[INFO] [stdout] 5 |     value : i32
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Data` 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: variant `Rgb` is never constructed
[INFO] [stdout]  --> examples/patternstruct.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Color {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 2 |     Rgb(i32, i32, i32),
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stdout]  --> examples/patternstruct.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Message {
[INFO] [stdout]   |      ------- variants in this enum
[INFO] [stdout] 7 |     Quit,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     Move { x: i32, y: i32 },
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 9 |     Write(String),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ex1` (example "closurescapturedvaluesout") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variant `Banana` is never constructed
[INFO] [stdout]  --> examples/combinatormap.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Food { Apple , Banana }
[INFO] [stdout]   |      ----           ^^^^^^
[INFO] [stdout]   |      |
[INFO] [stdout]   |      variant in this enum
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Food` 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 `0` is never read
[INFO] [stdout]  --> examples/combinatormap.rs:6:32
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Debug)] struct Cooked(Food);
[INFO] [stdout]   |                         ------ ^^^^
[INFO] [stdout]   |                         |
[INFO] [stdout]   |                         field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `Cooked` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `peel` is never used
[INFO] [stdout]   --> examples/combinatormap.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn peel(food: Option<Food>) -> Option<Peeled> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chop` is never used
[INFO] [stdout]   --> examples/combinatormap.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn chop(peeled: Option<Peeled>) -> Option<Chopped> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cook` is never used
[INFO] [stdout]   --> examples/combinatormap.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn cook(chopped: Option<Chopped>) -> Option<Cooked> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> examples/patternsyntax.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let y = 10;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]  --> examples/recoverableerrorwithresultorelse.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let greeting_file = File::open("hello.txt").unwrap_or_else(|error| {
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/sendsync.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut  x: Data =  Data { value: 10 };
[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/sendsync.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut  y: RcData = RcData { value: Rc::new(10) };
[INFO] [stdout]    |         -----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/sendsync.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut  z: ArcData = ArcData { value: Arc::new(10) };
[INFO] [stdout]    |         -----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> examples/sendsync.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut  y: RcData = RcData { value: Rc::new(10) };
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> examples/sendsync.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Data { 
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 8 |     value : i32
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Data` 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 `value` is never read
[INFO] [stdout]   --> examples/sendsync.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct  RcData {
[INFO] [stdout]    |         ------ field in this struct
[INFO] [stdout] 13 |     value : Rc<i32>
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RcData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> examples/sendsync.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct  ArcData {
[INFO] [stdout]    |         ------- field in this struct
[INFO] [stdout] 18 |     value : Arc<i32>
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArcData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ah` is never used
[INFO] [stdout]  --> examples/abortandunwind.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn ah() {
[INFO] [stdout]   |    ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 15 |   unsafe {
[INFO] [stdout]    |   ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]  --> src/main.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 |   let p = v.as_ptr();
[INFO] [stdout]   |       ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1cbd8c068fa67c9590a42eb39f9a6d22a92a75eb15c150698e5a08c81753b6cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cbd8c068fa67c9590a42eb39f9a6d22a92a75eb15c150698e5a08c81753b6cc", kill_on_drop: false }`
[INFO] [stdout] 1cbd8c068fa67c9590a42eb39f9a6d22a92a75eb15c150698e5a08c81753b6cc
