[INFO] updating cached repository https://github.com/matklad/s
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7be36a4cf85c5dbb1046a41ef01c8d441c60f98f
[INFO] checking matklad/s against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fs" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/s on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/matklad/s
[INFO] finished tweaking git repo https://github.com/matklad/s
[INFO] tweaked toml for git repo https://github.com/matklad/s written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/s already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 85007bcbbd5da8c01dbcae1fe4ab683d100a6070b3946b32c4f75fe9be58a26c
[INFO] running `"docker" "start" "-a" "85007bcbbd5da8c01dbcae1fe4ab683d100a6070b3946b32c4f75fe9be58a26c"`
[INFO] [stderr]     Checking s v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/sexpr.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     try!(start.fmt(f));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/sexpr.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             try!(sep.fmt(f));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/sexpr.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         try!(x.fmt(f));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:112:20
[INFO] [stderr]     |
[INFO] [stderr] 112 |                 if try!(eval_number(env, cond)) != 0 {
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:124:17
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 try!(args.iter().map(|arg| {
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:144:42
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 let values: Vec<Value> = try!(values.iter().map(|v| eval(val_env, v)).collect());
[INFO] [stderr]     |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:163:33
[INFO] [stderr]     |
[INFO] [stderr] 163 |                 let desugared = try!(f(args));
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:292:40
[INFO] [stderr]     |
[INFO] [stderr] 292 |                 let args: Vec<Value> = try!(args.iter().map(|a| eval(env, a)).collect());
[INFO] [stderr]     |                                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:407:11
[INFO] [stderr]     |
[INFO] [stderr] 407 |     match try!(eval(env, expr)) {
[INFO] [stderr]     |           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:422:23
[INFO] [stderr]     |
[INFO] [stderr] 422 |             let fun = try!(eval(env, &args[0]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/eval.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Closure(Rc<Fn(&Env, &[Sexpr]) -> Result<Value, Error>>)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Env, &[Sexpr]) -> Result<Value, Error>`
[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/eval.rs:27:19
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub type Env = Rc<Fn(&str) -> Option<Value>>;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&str) -> Option<Value>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/sexpr.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     try!(start.fmt(f));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/sexpr.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             try!(sep.fmt(f));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/sexpr.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         try!(x.fmt(f));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:112:20
[INFO] [stderr]     |
[INFO] [stderr] 112 |                 if try!(eval_number(env, cond)) != 0 {
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:124:17
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 try!(args.iter().map(|arg| {
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:144:42
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 let values: Vec<Value> = try!(values.iter().map(|v| eval(val_env, v)).collect());
[INFO] [stderr]     |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:163:33
[INFO] [stderr]     |
[INFO] [stderr] 163 |                 let desugared = try!(f(args));
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:292:40
[INFO] [stderr]     |
[INFO] [stderr] 292 |                 let args: Vec<Value> = try!(args.iter().map(|a| eval(env, a)).collect());
[INFO] [stderr]     |                                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:407:11
[INFO] [stderr]     |
[INFO] [stderr] 407 |     match try!(eval(env, expr)) {
[INFO] [stderr]     |           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:422:23
[INFO] [stderr]     |
[INFO] [stderr] 422 |             let fun = try!(eval(env, &args[0]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/eval.rs:733:64
[INFO] [stderr]     |
[INFO] [stderr] 733 |         let closure = Value::Closure(Rc::new(|env, args| match try!(eval(env, &args[0])) {
[INFO] [stderr]     |                                                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/eval.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Closure(Rc<Fn(&Env, &[Sexpr]) -> Result<Value, Error>>)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Env, &[Sexpr]) -> Result<Value, Error>`
[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/eval.rs:27:19
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub type Env = Rc<Fn(&str) -> Option<Value>>;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&str) -> Option<Value>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]   --> src/sexpr.rs:57:15
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let s = s.trim_left();
[INFO] [stderr]    |               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]   --> src/sexpr.rs:68:19
[INFO] [stderr]    |
[INFO] [stderr] 68 |             s = s.trim_left();
[INFO] [stderr]    |                   ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]   --> src/sexpr.rs:57:15
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let s = s.trim_left();
[INFO] [stderr]    |               ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]   --> src/sexpr.rs:68:19
[INFO] [stderr]    |
[INFO] [stderr] 68 |             s = s.trim_left();
[INFO] [stderr]    |                   ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Number`
[INFO] [stderr]   --> src/eval.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Number(i64),
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Atom`
[INFO] [stderr]   --> src/eval.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Atom(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `List`
[INFO] [stderr]   --> src/eval.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     List(Vec<Value>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Closure`
[INFO] [stderr]   --> src/eval.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Closure(Rc<Fn(&Env, &[Sexpr]) -> Result<Value, Error>>)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `closure`
[INFO] [stderr]   --> src/eval.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn closure<F: Fn(&Env, &[Sexpr]) -> Result<Value, Error> + 'static>(f: F) -> Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `number`
[INFO] [stderr]   --> src/eval.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn number(i: i64) -> Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_bool`
[INFO] [stderr]   --> src/eval.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn from_bool(b: bool) -> Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_sexpr`
[INFO] [stderr]   --> src/eval.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn from_sexpr(sexpr: &Sexpr) -> Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eval`
[INFO] [stderr]   --> src/eval.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn eval(&self) -> Result<Value, Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `builtin`
[INFO] [stderr]   --> src/eval.rs:86:4
[INFO] [stderr]    |
[INFO] [stderr] 86 | fn builtin() -> Env {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mk_env`
[INFO] [stderr]    --> src/eval.rs:401:4
[INFO] [stderr]     |
[INFO] [stderr] 401 | fn mk_env<F: Fn(&str) -> Option<Value> + 'static>(f: F) -> Env {
[INFO] [stderr]     |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `eval_number`
[INFO] [stderr]    --> src/eval.rs:406:4
[INFO] [stderr]     |
[INFO] [stderr] 406 | fn eval_number(env: &Env, expr: &Sexpr) -> Result<i64, Error> {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `eval`
[INFO] [stderr]    --> src/eval.rs:414:4
[INFO] [stderr]     |
[INFO] [stderr] 414 | fn eval(env: &Env, expr: &Sexpr) -> Result<Value, Error> {
[INFO] [stderr]     |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 27 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "85007bcbbd5da8c01dbcae1fe4ab683d100a6070b3946b32c4f75fe9be58a26c"`
[INFO] running `"docker" "rm" "-f" "85007bcbbd5da8c01dbcae1fe4ab683d100a6070b3946b32c4f75fe9be58a26c"`
[INFO] [stdout] 85007bcbbd5da8c01dbcae1fe4ab683d100a6070b3946b32c4f75fe9be58a26c