[INFO] updating cached repository alexcrichton/l4c
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alexcrichton/l4c
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alexcrichton/l4c" "work/ex/beta-1.38-1/sources/1.37.0/gh/alexcrichton/l4c"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/alexcrichton/l4c'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alexcrichton/l4c" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alexcrichton/l4c"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alexcrichton/l4c'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e64e1719de50462c82b5175ec9053346ad80c9f4
[INFO] sha for GitHub repo alexcrichton/l4c: e64e1719de50462c82b5175ec9053346ad80c9f4
[INFO] validating manifest of alexcrichton/l4c on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of alexcrichton/l4c on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing alexcrichton/l4c
[INFO] removed workspace from alexcrichton/l4c
[INFO] finished frobbing alexcrichton/l4c
[INFO] frobbed toml for alexcrichton/l4c written to work/ex/beta-1.38-1/sources/1.37.0/gh/alexcrichton/l4c/Cargo.toml
[INFO] started frobbing alexcrichton/l4c
[INFO] removed workspace from alexcrichton/l4c
[INFO] finished frobbing alexcrichton/l4c
[INFO] frobbed toml for alexcrichton/l4c written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alexcrichton/l4c/Cargo.toml
[INFO] crate alexcrichton/l4c already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/alexcrichton/l4c/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing alexcrichton/l4c against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/alexcrichton/l4c:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 65e491d87fa1f0afc9430ad760eed4a52bf968a79681a0631b82a6737b59d33b
[INFO] running `"docker" "start" "-a" "65e491d87fa1f0afc9430ad760eed4a52bf968a79681a0631b82a6737b59d33b"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling l4c v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:135:25
[INFO] [stderr]     |
[INFO] [stderr] 135 |                     'a' ... 'z' | 'A' ... 'Z' | '_' => {
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:135:39
[INFO] [stderr]     |
[INFO] [stderr] 135 |                     'a' ... 'z' | 'A' ... 'Z' | '_' => {
[INFO] [stderr]     |                                       ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:142:25
[INFO] [stderr]     |
[INFO] [stderr] 142 |                     '1' ... '9' => { self.state = Number;  self.cur.push(c); }
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:307:25
[INFO] [stderr]     |
[INFO] [stderr] 307 |                     'a' ... 'z' | 'A' ... 'Z' | '_' | '0' ... '9' => {
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:307:39
[INFO] [stderr]     |
[INFO] [stderr] 307 |                     'a' ... 'z' | 'A' ... 'Z' | '_' | '0' ... '9' => {
[INFO] [stderr]     |                                       ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:307:59
[INFO] [stderr]     |
[INFO] [stderr] 307 |                     'a' ... 'z' | 'A' ... 'Z' | '_' | '0' ... '9' => {
[INFO] [stderr]     |                                                           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:322:25
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     '1' ... '9' => {
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:331:25
[INFO] [stderr]     |
[INFO] [stderr] 331 |                     '0' ... '9' | 'a' ... 'f' | 'A' ... 'F' => {
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:331:39
[INFO] [stderr]     |
[INFO] [stderr] 331 |                     '0' ... '9' | 'a' ... 'f' | 'A' ... 'F' => {
[INFO] [stderr]     |                                       ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:331:53
[INFO] [stderr]     |
[INFO] [stderr] 331 |                     '0' ... '9' | 'a' ... 'f' | 'A' ... 'F' => {
[INFO] [stderr]     |                                                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:346:25
[INFO] [stderr]     |
[INFO] [stderr] 346 |                     '0' ... '9' => { self.cur.push(c); }
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/front/parser.rs:445:41
[INFO] [stderr]     |
[INFO] [stderr] 445 |     fn parse_list<T>(&mut self, f: &mut FnMut(&mut Parser) -> T) -> Vec<T> {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Parser) -> T`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middle/ir.rs:83:29
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn dot(&self, out: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]    |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:129:33
[INFO] [stderr]     |
[INFO] [stderr] 129 |                      uses: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:130:33
[INFO] [stderr]     |
[INFO] [stderr] 130 |                      defs: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:170:36
[INFO] [stderr]     |
[INFO] [stderr] 170 |     pub fn each_def(&self, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                    ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:186:36
[INFO] [stderr]     |
[INFO] [stderr] 186 |     pub fn each_use(&self, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                    ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:218:29
[INFO] [stderr]     |
[INFO] [stderr] 218 |                  uses: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:219:29
[INFO] [stderr]     |
[INFO] [stderr] 219 |                  defs: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:223:42
[INFO] [stderr]     |
[INFO] [stderr] 223 |     fn each_def(&self, s: &Stmt, f: &mut FnMut(Temp)) { s.each_def(f) }
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:224:42
[INFO] [stderr]     |
[INFO] [stderr] 224 |     fn each_use(&self, s: &Stmt, f: &mut FnMut(Temp)) { s.each_use(f) }
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:277:41
[INFO] [stderr]     |
[INFO] [stderr] 277 |     pub fn map_temps(&mut self, f: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:289:37
[INFO] [stderr]     |
[INFO] [stderr] 289 |     pub fn each_temp(&self, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                     ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middle/ssa.rs:23:38
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn each_def(&self, ins: &T, &mut FnMut(Temp));
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middle/ssa.rs:24:38
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn each_use(&self, ins: &T, &mut FnMut(Temp));
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middle/ssa.rs:26:26
[INFO] [stderr]    |
[INFO] [stderr] 26 |                  u: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middle/ssa.rs:27:26
[INFO] [stderr]    |
[INFO] [stderr] 27 |                  d: &mut FnMut(Temp) -> Temp);
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/trans.rs:275:55
[INFO] [stderr]     |
[INFO] [stderr] 275 |     fn with_loop(&mut self, cond: &ast::Expr, f: &mut FnMut(&mut Translator)) {
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Translator)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/alloc.rs:465:63
[INFO] [stderr]     |
[INFO] [stderr] 465 |     fn alloc_ins(&mut self, f: &Function, i: Inst, push: &mut FnMut(Inst)) {
[INFO] [stderr]     |                                                               ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Inst)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/alloc.rs:619:29
[INFO] [stderr]     |
[INFO] [stderr] 619 |                     f: &mut FnMut(Inst)){
[INFO] [stderr]     |                             ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Inst)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/alloc.rs:636:59
[INFO] [stderr]     |
[INFO] [stderr] 636 | fn resolve_perm(result: &[u32], incoming: &[u32], f: &mut FnMut(Resolution)) {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Resolution)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/back/arch.rs:64:28
[INFO] [stderr]    |
[INFO] [stderr] 64 | pub fn each_caller(f: &mut FnMut(Register)) {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Register)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:176:42
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn each_def(&self, i: &Inst, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:179:42
[INFO] [stderr]     |
[INFO] [stderr] 179 |     fn each_use(&self, i: &Inst, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:208:29
[INFO] [stderr]     |
[INFO] [stderr] 208 |                  uses: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:209:29
[INFO] [stderr]     |
[INFO] [stderr] 209 |                  defs: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:258:42
[INFO] [stderr]     |
[INFO] [stderr] 258 |     fn each_def(&self, i: &Inst, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:265:42
[INFO] [stderr]     |
[INFO] [stderr] 265 |     fn each_use(&self, i: &Inst, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:297:29
[INFO] [stderr]     |
[INFO] [stderr] 297 |                  uses: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:298:29
[INFO] [stderr]     |
[INFO] [stderr] 298 |                  defs: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:428:37
[INFO] [stderr]     |
[INFO] [stderr] 428 |     pub fn each_temp(&self, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                     ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:435:41
[INFO] [stderr]     |
[INFO] [stderr] 435 |     pub fn map_temps(&mut self, f: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:465:37
[INFO] [stderr]     |
[INFO] [stderr] 465 |     fn map_temps(&mut self, f: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:477:33
[INFO] [stderr]     |
[INFO] [stderr] 477 |     fn each_temp(&self, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                 ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:675:29
[INFO] [stderr]     |
[INFO] [stderr] 675 |     fn dot(&self, out: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:694:36
[INFO] [stderr]     |
[INFO] [stderr] 694 |     pub fn output(&self, out: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:705:32
[INFO] [stderr]     |
[INFO] [stderr] 705 |     fn output(&self, out: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/back/precolor.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 |                    tmpclone: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/spill.rs:581:69
[INFO] [stderr]     |
[INFO] [stderr] 581 |     fn my_names(&self, tmp: Temp, from: NodeId, to: NodeId, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                                                     ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:133:56
[INFO] [stderr]     |
[INFO] [stderr] 133 |     pub fn each_postorder(&self, root: NodeId, f: &mut FnMut(&NodeId)) {
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&NodeId)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:138:41
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn map_nodes(&mut self, f: &mut FnMut(NodeId, N) -> N) {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(NodeId, N) -> N`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:148:60
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub fn map_consume_node(&mut self, id: NodeId, f: &mut FnMut(N) -> N) {
[INFO] [stderr]     |                                                            ^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(N) -> N`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:154:32
[INFO] [stderr]     |
[INFO] [stderr] 154 |                        n: &mut FnMut(NodeId, N) -> N2,
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(NodeId, N) -> N2`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:155:32
[INFO] [stderr]     |
[INFO] [stderr] 155 |                        e: &mut FnMut(E) -> E2) -> Graph<N2, E2> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(E) -> E2`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:173:33
[INFO] [stderr]     |
[INFO] [stderr] 173 |     pub fn dot(&self, out: &mut io::Write,
[INFO] [stderr]     |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:174:26
[INFO] [stderr]     |
[INFO] [stderr] 174 |                nid: &mut FnMut(NodeId) -> String,
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(NodeId) -> String`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:175:27
[INFO] [stderr]     |
[INFO] [stderr] 175 |                node: &mut FnMut(NodeId, &N) -> String,
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(NodeId, &N) -> String`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:176:27
[INFO] [stderr]     |
[INFO] [stderr] 176 |                edge: &mut FnMut(&E) -> String) -> io::Result<()> {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&E) -> String`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/mod.rs:19:24
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn dot(&self, &mut io::Write) -> io::Result<()>;
[INFO] [stderr]    |                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Display`
[INFO] [stderr]  --> src/front/pp.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::{Display, Write};
[INFO] [stderr]   |                ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.57s
[INFO] running `"docker" "inspect" "65e491d87fa1f0afc9430ad760eed4a52bf968a79681a0631b82a6737b59d33b"`
[INFO] running `"docker" "rm" "-f" "65e491d87fa1f0afc9430ad760eed4a52bf968a79681a0631b82a6737b59d33b"`
[INFO] [stdout] 65e491d87fa1f0afc9430ad760eed4a52bf968a79681a0631b82a6737b59d33b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/alexcrichton/l4c:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b33772f4df2cd285fc506d1f85c7b757ad87ad74c9a2a8d8f24e37bc9b31068a
[INFO] running `"docker" "start" "-a" "b33772f4df2cd285fc506d1f85c7b757ad87ad74c9a2a8d8f24e37bc9b31068a"`
[INFO] [stderr]    Compiling l4c v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:135:25
[INFO] [stderr]     |
[INFO] [stderr] 135 |                     'a' ... 'z' | 'A' ... 'Z' | '_' => {
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:135:39
[INFO] [stderr]     |
[INFO] [stderr] 135 |                     'a' ... 'z' | 'A' ... 'Z' | '_' => {
[INFO] [stderr]     |                                       ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:142:25
[INFO] [stderr]     |
[INFO] [stderr] 142 |                     '1' ... '9' => { self.state = Number;  self.cur.push(c); }
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:307:25
[INFO] [stderr]     |
[INFO] [stderr] 307 |                     'a' ... 'z' | 'A' ... 'Z' | '_' | '0' ... '9' => {
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:307:39
[INFO] [stderr]     |
[INFO] [stderr] 307 |                     'a' ... 'z' | 'A' ... 'Z' | '_' | '0' ... '9' => {
[INFO] [stderr]     |                                       ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:307:59
[INFO] [stderr]     |
[INFO] [stderr] 307 |                     'a' ... 'z' | 'A' ... 'Z' | '_' | '0' ... '9' => {
[INFO] [stderr]     |                                                           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:322:25
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     '1' ... '9' => {
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:331:25
[INFO] [stderr]     |
[INFO] [stderr] 331 |                     '0' ... '9' | 'a' ... 'f' | 'A' ... 'F' => {
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:331:39
[INFO] [stderr]     |
[INFO] [stderr] 331 |                     '0' ... '9' | 'a' ... 'f' | 'A' ... 'F' => {
[INFO] [stderr]     |                                       ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:331:53
[INFO] [stderr]     |
[INFO] [stderr] 331 |                     '0' ... '9' | 'a' ... 'f' | 'A' ... 'F' => {
[INFO] [stderr]     |                                                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/front/lexer.rs:346:25
[INFO] [stderr]     |
[INFO] [stderr] 346 |                     '0' ... '9' => { self.cur.push(c); }
[INFO] [stderr]     |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/front/parser.rs:445:41
[INFO] [stderr]     |
[INFO] [stderr] 445 |     fn parse_list<T>(&mut self, f: &mut FnMut(&mut Parser) -> T) -> Vec<T> {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Parser) -> T`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middle/ir.rs:83:29
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn dot(&self, out: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]    |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:129:33
[INFO] [stderr]     |
[INFO] [stderr] 129 |                      uses: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:130:33
[INFO] [stderr]     |
[INFO] [stderr] 130 |                      defs: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:170:36
[INFO] [stderr]     |
[INFO] [stderr] 170 |     pub fn each_def(&self, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                    ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:186:36
[INFO] [stderr]     |
[INFO] [stderr] 186 |     pub fn each_use(&self, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                    ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:218:29
[INFO] [stderr]     |
[INFO] [stderr] 218 |                  uses: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:219:29
[INFO] [stderr]     |
[INFO] [stderr] 219 |                  defs: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:223:42
[INFO] [stderr]     |
[INFO] [stderr] 223 |     fn each_def(&self, s: &Stmt, f: &mut FnMut(Temp)) { s.each_def(f) }
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:224:42
[INFO] [stderr]     |
[INFO] [stderr] 224 |     fn each_use(&self, s: &Stmt, f: &mut FnMut(Temp)) { s.each_use(f) }
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:277:41
[INFO] [stderr]     |
[INFO] [stderr] 277 |     pub fn map_temps(&mut self, f: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/ir.rs:289:37
[INFO] [stderr]     |
[INFO] [stderr] 289 |     pub fn each_temp(&self, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                     ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middle/ssa.rs:23:38
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn each_def(&self, ins: &T, &mut FnMut(Temp));
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middle/ssa.rs:24:38
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn each_use(&self, ins: &T, &mut FnMut(Temp));
[INFO] [stderr]    |                                      ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middle/ssa.rs:26:26
[INFO] [stderr]    |
[INFO] [stderr] 26 |                  u: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middle/ssa.rs:27:26
[INFO] [stderr]    |
[INFO] [stderr] 27 |                  d: &mut FnMut(Temp) -> Temp);
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middle/trans.rs:275:55
[INFO] [stderr]     |
[INFO] [stderr] 275 |     fn with_loop(&mut self, cond: &ast::Expr, f: &mut FnMut(&mut Translator)) {
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Translator)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/alloc.rs:465:63
[INFO] [stderr]     |
[INFO] [stderr] 465 |     fn alloc_ins(&mut self, f: &Function, i: Inst, push: &mut FnMut(Inst)) {
[INFO] [stderr]     |                                                               ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Inst)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/alloc.rs:619:29
[INFO] [stderr]     |
[INFO] [stderr] 619 |                     f: &mut FnMut(Inst)){
[INFO] [stderr]     |                             ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Inst)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/alloc.rs:636:59
[INFO] [stderr]     |
[INFO] [stderr] 636 | fn resolve_perm(result: &[u32], incoming: &[u32], f: &mut FnMut(Resolution)) {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Resolution)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/back/arch.rs:64:28
[INFO] [stderr]    |
[INFO] [stderr] 64 | pub fn each_caller(f: &mut FnMut(Register)) {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Register)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:176:42
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn each_def(&self, i: &Inst, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:179:42
[INFO] [stderr]     |
[INFO] [stderr] 179 |     fn each_use(&self, i: &Inst, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:208:29
[INFO] [stderr]     |
[INFO] [stderr] 208 |                  uses: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:209:29
[INFO] [stderr]     |
[INFO] [stderr] 209 |                  defs: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:258:42
[INFO] [stderr]     |
[INFO] [stderr] 258 |     fn each_def(&self, i: &Inst, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:265:42
[INFO] [stderr]     |
[INFO] [stderr] 265 |     fn each_use(&self, i: &Inst, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:297:29
[INFO] [stderr]     |
[INFO] [stderr] 297 |                  uses: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:298:29
[INFO] [stderr]     |
[INFO] [stderr] 298 |                  defs: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:428:37
[INFO] [stderr]     |
[INFO] [stderr] 428 |     pub fn each_temp(&self, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                     ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:435:41
[INFO] [stderr]     |
[INFO] [stderr] 435 |     pub fn map_temps(&mut self, f: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:465:37
[INFO] [stderr]     |
[INFO] [stderr] 465 |     fn map_temps(&mut self, f: &mut FnMut(Temp) -> Temp) {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:477:33
[INFO] [stderr]     |
[INFO] [stderr] 477 |     fn each_temp(&self, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                 ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:675:29
[INFO] [stderr]     |
[INFO] [stderr] 675 |     fn dot(&self, out: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:694:36
[INFO] [stderr]     |
[INFO] [stderr] 694 |     pub fn output(&self, out: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/assem.rs:705:32
[INFO] [stderr]     |
[INFO] [stderr] 705 |     fn output(&self, out: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/back/precolor.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 |                    tmpclone: &mut FnMut(Temp) -> Temp,
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp) -> Temp`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/back/spill.rs:581:69
[INFO] [stderr]     |
[INFO] [stderr] 581 |     fn my_names(&self, tmp: Temp, from: NodeId, to: NodeId, f: &mut FnMut(Temp)) {
[INFO] [stderr]     |                                                                     ^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Temp)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:133:56
[INFO] [stderr]     |
[INFO] [stderr] 133 |     pub fn each_postorder(&self, root: NodeId, f: &mut FnMut(&NodeId)) {
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&NodeId)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:138:41
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn map_nodes(&mut self, f: &mut FnMut(NodeId, N) -> N) {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(NodeId, N) -> N`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:148:60
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub fn map_consume_node(&mut self, id: NodeId, f: &mut FnMut(N) -> N) {
[INFO] [stderr]     |                                                            ^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(N) -> N`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:154:32
[INFO] [stderr]     |
[INFO] [stderr] 154 |                        n: &mut FnMut(NodeId, N) -> N2,
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(NodeId, N) -> N2`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:155:32
[INFO] [stderr]     |
[INFO] [stderr] 155 |                        e: &mut FnMut(E) -> E2) -> Graph<N2, E2> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(E) -> E2`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:173:33
[INFO] [stderr]     |
[INFO] [stderr] 173 |     pub fn dot(&self, out: &mut io::Write,
[INFO] [stderr]     |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:174:26
[INFO] [stderr]     |
[INFO] [stderr] 174 |                nid: &mut FnMut(NodeId) -> String,
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(NodeId) -> String`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:175:27
[INFO] [stderr]     |
[INFO] [stderr] 175 |                node: &mut FnMut(NodeId, &N) -> String,
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(NodeId, &N) -> String`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/utils/graph.rs:176:27
[INFO] [stderr]     |
[INFO] [stderr] 176 |                edge: &mut FnMut(&E) -> String) -> io::Result<()> {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&E) -> String`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils/mod.rs:19:24
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn dot(&self, &mut io::Write) -> io::Result<()>;
[INFO] [stderr]    |                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Display`
[INFO] [stderr]  --> src/front/pp.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::{Display, Write};
[INFO] [stderr]   |                ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.32s
[INFO] running `"docker" "inspect" "b33772f4df2cd285fc506d1f85c7b757ad87ad74c9a2a8d8f24e37bc9b31068a"`
[INFO] running `"docker" "rm" "-f" "b33772f4df2cd285fc506d1f85c7b757ad87ad74c9a2a8d8f24e37bc9b31068a"`
[INFO] [stdout] b33772f4df2cd285fc506d1f85c7b757ad87ad74c9a2a8d8f24e37bc9b31068a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/alexcrichton/l4c:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 4c31a3c21253807003aa10796d50b38d85a812d21d4bd236578cda1881196d6c
[INFO] running `"docker" "start" "-a" "4c31a3c21253807003aa10796d50b38d85a812d21d4bd236578cda1881196d6c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/l4c-5576d260db8b79f5
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test back::arch::test_stack_alignment ... ok
[INFO] [stdout] test back::spill::tests::test_sort_works1 ... ok
[INFO] [stdout] test back::alloc::tests::test_resolve ... ok
[INFO] [stdout] test back::spill::tests::test_sort_works2 ... ok
[INFO] [stdout] test middle::opt::arith::test_pow2 ... ok
[INFO] [stdout] test middle::opt::arith::test_log2 ... ok
[INFO] [stdout] test utils::graph::test_basic ... ok
[INFO] [stdout] test utils::graph::test_same_id_fail ... ok
[INFO] [stdout] test utils::graph::test_random_id_fail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4c31a3c21253807003aa10796d50b38d85a812d21d4bd236578cda1881196d6c"`
[INFO] running `"docker" "rm" "-f" "4c31a3c21253807003aa10796d50b38d85a812d21d4bd236578cda1881196d6c"`
[INFO] [stdout] 4c31a3c21253807003aa10796d50b38d85a812d21d4bd236578cda1881196d6c