[INFO] crate flu 0.0.2 is already in cache
[INFO] checking flu-0.0.2 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate flu 0.0.2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate flu 0.0.2 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate flu 0.0.2
[INFO] finished tweaking crates.io crate flu 0.0.2
[INFO] tweaked toml for crates.io crate flu 0.0.2 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f212f61cdd163b21715af58b6c5e3ff545b704ea413af0e000677232c2b73e1e
[INFO] running `"docker" "start" "-a" "f212f61cdd163b21715af58b6c5e3ff545b704ea413af0e000677232c2b73e1e"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling flu v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'gcc::Config': gcc::Config has been renamed to gcc::Build
[INFO] [stderr]   --> build.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     gcc::Config::new()
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'gcc::Build::new': crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stderr]   --> build.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     gcc::Config::new()
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: dist/lua-5.1.5/src/lauxlib.c: In function 'luaL_loadfile':
[INFO] [stderr] warning: dist/lua-5.1.5/src/lauxlib.c:577:4: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
[INFO] [stderr] warning:     while ((c = getc(lf.f)) != EOF && c != LUA_SIGNATURE[0]) ;
[INFO] [stderr] warning:     ^~~~~
[INFO] [stderr] warning: dist/lua-5.1.5/src/lauxlib.c:578:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
[INFO] [stderr] warning:      lf.extraline = 0;
[INFO] [stderr] warning:      ^~
[INFO] [stderr] warning: dist/lua-5.1.5/src/ldebug.c: In function 'symbexec':
[INFO] [stderr] warning: dist/lua-5.1.5/src/ldebug.c:268:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
[INFO] [stderr] warning:  #define check(x)  if (!(x)) return 0;
[INFO] [stderr] warning:                       ^
[INFO] [stderr] warning: dist/lua-5.1.5/src/ldebug.c:272:26: note: in expansion of macro 'check'
[INFO] [stderr] warning:  #define checkreg(pt,reg) check((reg) < (pt)->maxstacksize)
[INFO] [stderr] warning:                           ^~~~~
[INFO] [stderr] warning: dist/lua-5.1.5/src/ldebug.c:414:9: note: in expansion of macro 'checkreg'
[INFO] [stderr] warning:          checkreg(pt, a+3);
[INFO] [stderr] warning:          ^~~~~~~~
[INFO] [stderr] warning: dist/lua-5.1.5/src/ldebug.c:416:7: note: here
[INFO] [stderr] warning:        case OP_JMP: {
[INFO] [stderr] warning:        ^~~~
[INFO] [stderr] warning: dist/lua-5.1.5/src/llex.c: In function 'llex':
[INFO] [stderr] warning: dist/lua-5.1.5/src/llex.c:369:14: warning: this statement may fall through [-Wimplicit-fallthrough=]
[INFO] [stderr] warning:          else luaX_lexerror(ls, "invalid long string delimiter", TK_STRING);
[INFO] [stderr] warning:               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stderr] warning: dist/lua-5.1.5/src/llex.c:371:7: note: here
[INFO] [stderr] warning:        case '=': {
[INFO] [stderr] warning:        ^~~~
[INFO] [stderr] warning: dist/lua-5.1.5/src/ltable.c: In function 'luaH_get':
[INFO] [stderr] warning: dist/lua-5.1.5/src/ltable.c:473:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
[INFO] [stderr] warning:      case LUA_TNUMBER: {
[INFO] [stderr] warning:                        ^
[INFO] [stderr] warning: dist/lua-5.1.5/src/ltable.c:481:5: note: here
[INFO] [stderr] warning:      default: {
[INFO] [stderr] warning:      ^~~~~~~
[INFO] [stderr] warning: dist/lua-5.1.5/src/ltablib.c: In function 'addfield':
[INFO] [stderr] warning: dist/lua-5.1.5/src/ltablib.c:137:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
[INFO] [stderr] warning:    if (!lua_isstring(L, -1))
[INFO] [stderr] warning:    ^~
[INFO] [stderr] warning: dist/lua-5.1.5/src/ltablib.c:140:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
[INFO] [stderr] warning:      luaL_addvalue(b);
[INFO] [stderr] warning:      ^~~~~~~~~~~~~
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/lib.rs:5:1
[INFO] [stderr]    |
[INFO] [stderr] 5  | / macro_rules! assert_enum {
[INFO] [stderr] 6  | |     (@as_expr $e:expr) => {$e};
[INFO] [stderr] 7  | |     (@as_pat $p:pat) => {$p};
[INFO] [stderr] 8  | |     ($left:expr, $($right:tt)*) => (
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |     )
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LuaRef`
[INFO] [stderr]  --> src/stack/push.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use LuaRef;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LuaValue`
[INFO] [stderr]  --> src/stack/read.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use LuaValue;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LuaRef`
[INFO] [stderr]  --> src/stack/read.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use LuaRef;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nil`
[INFO] [stderr]  --> src/stack/read.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use nil;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LuaValue`
[INFO] [stderr]  --> src/stack/size.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use LuaValue;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LuaRef`
[INFO] [stderr]  --> src/stack/size.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use LuaRef;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nil`
[INFO] [stderr]  --> src/collections/table.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use nil;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]   --> src/collections/table.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::mem;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Table`
[INFO] [stderr]  --> src/context.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use Table;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nil`
[INFO] [stderr]  --> src/value.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use nil;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Table`
[INFO] [stderr]  --> src/function.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use Table;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nil`
[INFO] [stderr]  --> src/function.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use nil;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `nil` should have an upper camel case name
[INFO] [stderr]   --> src/lib.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub struct nil;
[INFO] [stderr]    |            ^^^ help: convert the identifier to upper camel case: `Nil`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LuaRef`
[INFO] [stderr]  --> src/stack/push.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use LuaRef;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LuaValue`
[INFO] [stderr]  --> src/stack/read.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use LuaValue;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LuaRef`
[INFO] [stderr]  --> src/stack/read.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use LuaRef;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LuaValue`
[INFO] [stderr]  --> src/stack/size.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use LuaValue;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LuaRef`
[INFO] [stderr]  --> src/stack/size.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use LuaRef;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]   --> src/collections/table.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::mem;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nil`
[INFO] [stderr]  --> src/function.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use nil;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `nil` should have an upper camel case name
[INFO] [stderr]   --> src/lib.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub struct nil;
[INFO] [stderr]    |            ^^^ help: convert the identifier to upper camel case: `Nil`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cxt`
[INFO] [stderr]   --> src/value.rs:43:14
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn check(cxt: &'a Context, idx: i32) -> bool {
[INFO] [stderr]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_cxt`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `idx`
[INFO] [stderr]   --> src/value.rs:43:32
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn check(cxt: &'a Context, idx: i32) -> bool {
[INFO] [stderr]    |                                ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cxt`
[INFO] [stderr]   --> src/borrow.rs:52:14
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn check(cxt: &'a Context, idx: i32) -> bool {
[INFO] [stderr]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_cxt`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `idx`
[INFO] [stderr]   --> src/borrow.rs:52:32
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn check(cxt: &'a Context, idx: i32) -> bool {
[INFO] [stderr]    |                                ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/function.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         unsafe {
[INFO] [stderr]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/function.rs:101:24
[INFO] [stderr]     |
[INFO] [stderr] 98  | / unsafe extern fn wrapper<P, R, F>(L: *mut ffi::lua_State) -> libc::c_int
[INFO] [stderr] 99  | |         where P: Push, R: for<'a> Read<'a> + Size, F: Fn(R) -> P {
[INFO] [stderr] 100 | |     let cxt = Context::from_state_weak(L);
[INFO] [stderr] 101 | |     let func: &mut F = unsafe { mem::transmute(ffi::lua_touserdata(L, ffi::lua_upvalueindex(1))) };
[INFO] [stderr]     | |                        ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] ...   |
[INFO] [stderr] 106 | |     R::size()
[INFO] [stderr] 107 | | }
[INFO] [stderr]     | |_- because it's nested under this `unsafe` fn
[INFO] [stderr] 
[INFO] [stderr] warning: variable `L` should have a snake case name
[INFO] [stderr]   --> src/function.rs:98:35
[INFO] [stderr]    |
[INFO] [stderr] 98 | unsafe extern fn wrapper<P, R, F>(L: *mut ffi::lua_State) -> libc::c_int
[INFO] [stderr]    |                                   ^ help: convert the identifier to snake case: `l`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cxt`
[INFO] [stderr]   --> src/value.rs:43:14
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn check(cxt: &'a Context, idx: i32) -> bool {
[INFO] [stderr]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_cxt`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `idx`
[INFO] [stderr]   --> src/value.rs:43:32
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn check(cxt: &'a Context, idx: i32) -> bool {
[INFO] [stderr]    |                                ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cxt`
[INFO] [stderr]   --> src/borrow.rs:52:14
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn check(cxt: &'a Context, idx: i32) -> bool {
[INFO] [stderr]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_cxt`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `idx`
[INFO] [stderr]   --> src/borrow.rs:52:32
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn check(cxt: &'a Context, idx: i32) -> bool {
[INFO] [stderr]    |                                ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/function.rs:150:9
[INFO] [stderr]     |
[INFO] [stderr] 150 |     let mut cxt = Context::new();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/function.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         unsafe {
[INFO] [stderr]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/function.rs:101:24
[INFO] [stderr]     |
[INFO] [stderr] 98  | / unsafe extern fn wrapper<P, R, F>(L: *mut ffi::lua_State) -> libc::c_int
[INFO] [stderr] 99  | |         where P: Push, R: for<'a> Read<'a> + Size, F: Fn(R) -> P {
[INFO] [stderr] 100 | |     let cxt = Context::from_state_weak(L);
[INFO] [stderr] 101 | |     let func: &mut F = unsafe { mem::transmute(ffi::lua_touserdata(L, ffi::lua_upvalueindex(1))) };
[INFO] [stderr]     | |                        ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] ...   |
[INFO] [stderr] 106 | |     R::size()
[INFO] [stderr] 107 | | }
[INFO] [stderr]     | |_- because it's nested under this `unsafe` fn
[INFO] [stderr] 
[INFO] [stderr] warning: variable `L` should have a snake case name
[INFO] [stderr]   --> src/function.rs:98:35
[INFO] [stderr]    |
[INFO] [stderr] 98 | unsafe extern fn wrapper<P, R, F>(L: *mut ffi::lua_State) -> libc::c_int
[INFO] [stderr]    |                                   ^ help: convert the identifier to snake case: `l`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.61s
[INFO] running `"docker" "inspect" "f212f61cdd163b21715af58b6c5e3ff545b704ea413af0e000677232c2b73e1e"`
[INFO] running `"docker" "rm" "-f" "f212f61cdd163b21715af58b6c5e3ff545b704ea413af0e000677232c2b73e1e"`
[INFO] [stdout] f212f61cdd163b21715af58b6c5e3ff545b704ea413af0e000677232c2b73e1e