[INFO] updating cached repository marcmmiller/rsscm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/marcmmiller/rsscm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/marcmmiller/rsscm" "work/ex/beta-1.38-1/sources/1.37.0/gh/marcmmiller/rsscm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/marcmmiller/rsscm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/marcmmiller/rsscm" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marcmmiller/rsscm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marcmmiller/rsscm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 056fb54bceb15d069ab5a5068f6f6db30d13a840
[INFO] sha for GitHub repo marcmmiller/rsscm: 056fb54bceb15d069ab5a5068f6f6db30d13a840
[INFO] validating manifest of marcmmiller/rsscm 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 marcmmiller/rsscm 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 marcmmiller/rsscm
[INFO] finished frobbing marcmmiller/rsscm
[INFO] frobbed toml for marcmmiller/rsscm written to work/ex/beta-1.38-1/sources/1.37.0/gh/marcmmiller/rsscm/Cargo.toml
[INFO] started frobbing marcmmiller/rsscm
[INFO] finished frobbing marcmmiller/rsscm
[INFO] frobbed toml for marcmmiller/rsscm written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marcmmiller/rsscm/Cargo.toml
[INFO] crate marcmmiller/rsscm 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing marcmmiller/rsscm against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marcmmiller/rsscm:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 8ee0a8637263c4b6d0c82241e99e5a97cdabd07d33451f3f3eb7235b27e97366
[INFO] running `"docker" "start" "-a" "8ee0a8637263c4b6d0c82241e99e5a97cdabd07d33451f3f3eb7235b27e97366"`
[INFO] [stderr]    Compiling rsscm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Ref`
[INFO] [stderr]  --> src/main.rs:2:32
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cell::{Cell, RefCell, Ref, UnsafeCell};
[INFO] [stderr]   |                                ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Mutex`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::sync::Mutex;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |     reader: Box<Read>,
[INFO] [stderr]    |                 ^^^^ help: use `dyn`: `dyn Read`
[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/main.rs:79:37
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn read_while(&mut self, pred: &Fn(char) -> bool) -> std::io::Result<String> {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(char) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:120:42
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn cause<'a>(&'a self) -> Option<&'a std::error::Error> {
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:133:49
[INFO] [stderr]     |
[INFO] [stderr] 133 |             ErrorType::IOError(ref e) => (e as &Display).fmt(f),
[INFO] [stderr]     |                                                 ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:497:46
[INFO] [stderr]     |
[INFO] [stderr] 497 |             Sexp::Closure(ref sc) => (sc as &Display).fmt(f),
[INFO] [stderr]     |                                              ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:498:46
[INFO] [stderr]     |
[INFO] [stderr] 498 |             Sexp::Builtin(ref bi) => (bi as &Display).fmt(f),
[INFO] [stderr]     |                                              ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/main.rs:654:30
[INFO] [stderr]     |
[INFO] [stderr] 654 |             DUMP.with(|c| if (c.get() > 0) {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:676:23
[INFO] [stderr]     |
[INFO] [stderr] 676 | type BuiltinPtr = Box<Fn(&mut Iterator<Item=Sexp>) -> SResult<Sexp>>;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Iterator<Item=Sexp>) -> SResult<Sexp>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:676:31
[INFO] [stderr]     |
[INFO] [stderr] 676 | type BuiltinPtr = Box<Fn(&mut Iterator<Item=Sexp>) -> SResult<Sexp>>;
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Sexp>`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/main.rs:774:12
[INFO] [stderr]     |
[INFO] [stderr] 774 |         if (self.c.is_none()) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:1220:39
[INFO] [stderr]      |
[INFO] [stderr] 1220 |     fn sexps<'a>(&'a mut self) -> Box<Iterator<Item=&'a mut Sexp> + 'a> {
[INFO] [stderr]      |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&'a mut Sexp> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:1227:43
[INFO] [stderr]      |
[INFO] [stderr] 1227 |     fn all_sexps<'a>(&'a mut self) -> Box<Iterator<Item=&'a mut Sexp> + 'a> {
[INFO] [stderr]      |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&'a mut Sexp> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:1272:12
[INFO] [stderr]      |
[INFO] [stderr] 1272 |     f: Box<Fn(FramePtr) -> SResult<Sexp>>
[INFO] [stderr]      |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FramePtr) -> SResult<Sexp>`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]     --> src/main.rs:1561:16
[INFO] [stderr]      |
[INFO] [stderr] 1561 |             if (!update) {
[INFO] [stderr]      |                ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]     --> src/main.rs:1675:12
[INFO] [stderr]      |
[INFO] [stderr] 1675 |         if (tail) {
[INFO] [stderr]      |            ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `::Atom`
[INFO] [stderr]     --> src/main.rs:1794:9
[INFO] [stderr]      |
[INFO] [stderr] 1794 |     use ::Atom;
[INFO] [stderr]      |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:2132:46
[INFO] [stderr]      |
[INFO] [stderr] 2132 |         fn copy_all(&mut self, live_it: &mut Iterator<Item=&mut Sexp>) {
[INFO] [stderr]      |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&mut Sexp>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]     --> src/main.rs:2192:5
[INFO] [stderr]      |
[INFO] [stderr] 2192 | /     macro_rules! slist {
[INFO] [stderr] 2193 | |         ( $i:ident => $it:ident, $e:expr ) => {
[INFO] [stderr] 2194 | |             if let Some($i) = $it.next() {
[INFO] [stderr] 2195 | |                 $e
[INFO] [stderr] ...    |
[INFO] [stderr] 2202 | |         }
[INFO] [stderr] 2203 | |     }
[INFO] [stderr]      | |_____^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:2230:28
[INFO] [stderr]      |
[INFO] [stderr] 2230 |     let b : Vec<(&str, Box<Fn(&mut Iterator<Item=Sexp>) -> SResult<Sexp>>)> = vec!(
[INFO] [stderr]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Iterator<Item=Sexp>) -> SResult<Sexp>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:2230:36
[INFO] [stderr]      |
[INFO] [stderr] 2230 |     let b : Vec<(&str, Box<Fn(&mut Iterator<Item=Sexp>) -> SResult<Sexp>>)> = vec!(
[INFO] [stderr]      |                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Sexp>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:2299:26
[INFO] [stderr]      |
[INFO] [stderr] 2299 | fn scheme_apply(it: &mut Iterator<Item=Sexp>, env: FramePtr, ctx: Rc<IntCtx>) -> SResult<Sexp> {
[INFO] [stderr]      |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Sexp>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:2330:26
[INFO] [stderr]      |
[INFO] [stderr] 2330 | fn mathy<F>(f: F) -> Box<Fn(&mut Iterator<Item=Sexp>)->SResult<Sexp>>
[INFO] [stderr]      |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Iterator<Item=Sexp>)->SResult<Sexp>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:2330:34
[INFO] [stderr]      |
[INFO] [stderr] 2330 | fn mathy<F>(f: F) -> Box<Fn(&mut Iterator<Item=Sexp>)->SResult<Sexp>>
[INFO] [stderr]      |                                  ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Sexp>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:2342:25
[INFO] [stderr]      |
[INFO] [stderr] 2342 | fn cmpy<F>(f: F) -> Box<Fn(&mut Iterator<Item=Sexp>) -> SResult<Sexp>>
[INFO] [stderr]      |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Iterator<Item=Sexp>) -> SResult<Sexp>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:2342:33
[INFO] [stderr]      |
[INFO] [stderr] 2342 | fn cmpy<F>(f: F) -> Box<Fn(&mut Iterator<Item=Sexp>) -> SResult<Sexp>>
[INFO] [stderr]      |                                 ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Sexp>`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stderr]     --> src/main.rs:1321:5
[INFO] [stderr]      |
[INFO] [stderr] 1321 |     fn lastable(self) -> Lastable<Self>;
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stderr]      |
[INFO] [stderr]      = help: the trait `std::marker::Sized` is not implemented for `Self`
[INFO] [stderr]      = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stderr]      = help: consider adding a `where Self: std::marker::Sized` bound
[INFO] [stderr] note: required by `Lastable`
[INFO] [stderr]     --> src/main.rs:1296:1
[INFO] [stderr]      |
[INFO] [stderr] 1296 | struct Lastable<I> where I: Iterator {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: `Self` is not an iterator
[INFO] [stderr]     --> src/main.rs:1321:5
[INFO] [stderr]      |
[INFO] [stderr] 1321 |     fn lastable(self) -> Lastable<Self>;
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `Self` is not an iterator
[INFO] [stderr]      |
[INFO] [stderr]      = help: the trait `std::iter::Iterator` is not implemented for `Self`
[INFO] [stderr]      = help: consider adding a `where Self: std::iter::Iterator` bound
[INFO] [stderr] note: required by `Lastable`
[INFO] [stderr]     --> src/main.rs:1296:1
[INFO] [stderr]      |
[INFO] [stderr] 1296 | struct Lastable<I> where I: Iterator {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `rsscm`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8ee0a8637263c4b6d0c82241e99e5a97cdabd07d33451f3f3eb7235b27e97366"`
[INFO] running `"docker" "rm" "-f" "8ee0a8637263c4b6d0c82241e99e5a97cdabd07d33451f3f3eb7235b27e97366"`
[INFO] [stdout] 8ee0a8637263c4b6d0c82241e99e5a97cdabd07d33451f3f3eb7235b27e97366