[INFO] cloning repository https://github.com/l3kn/EulerLisp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/l3kn/EulerLisp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fl3kn%2FEulerLisp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fl3kn%2FEulerLisp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c525a71b2059b06dc1341fcd479daa8f77bdd972
[INFO] testing l3kn/EulerLisp against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fl3kn%2FEulerLisp" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/l3kn/EulerLisp on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/l3kn/EulerLisp
[INFO] finished tweaking git repo https://github.com/l3kn/EulerLisp
[INFO] tweaked toml for git repo https://github.com/l3kn/EulerLisp written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/l3kn/EulerLisp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee5e57f8a30342e842db125976ffee969768a9b93745730c5b7751cd586cf594
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ee5e57f8a30342e842db125976ffee969768a9b93745730c5b7751cd586cf594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee5e57f8a30342e842db125976ffee969768a9b93745730c5b7751cd586cf594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee5e57f8a30342e842db125976ffee969768a9b93745730c5b7751cd586cf594", kill_on_drop: false }`
[INFO] [stdout] ee5e57f8a30342e842db125976ffee969768a9b93745730c5b7751cd586cf594
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fdc6575cc140e38e23e1ebba827bec73af18a45d2ad9ab632627b6d7ccd617cc
[INFO] running `Command { std: "docker" "start" "-a" "fdc6575cc140e38e23e1ebba827bec73af18a45d2ad9ab632627b6d7ccd617cc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.0
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling csv v1.0.0-beta.5
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling rayon v1.0.1
[INFO] [stderr]    Compiling rustyline v1.0.0
[INFO] [stderr]    Compiling syn v0.15.25
[INFO] [stderr]    Compiling lisp-macros v0.1.0 (/opt/rustwide/workdir/lisp-macros)
[INFO] [stdout] warning: unused variable: `function`
[INFO] [stdout]   --> lisp-macros/lib.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let function = function::parse(&fn_item).unwrap();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_function`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr_ts`
[INFO] [stdout]   --> lisp-macros/lib.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn lisp_fn(attr_ts: TokenStream, fn_ts: TokenStream) -> TokenStream {
[INFO] [stdout]    |                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attr_ts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling euler_lisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/lib.rs:40:24
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl From<std::option::NoneError> for LispError {
[INFO] [stdout]    |                        ^^^^^^^^^ not found in `std::option`
[INFO] [stdout]    |
[INFO] [stdout] help: there is an enum variant `crate::LispError::NoneError`; try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl From<crate::LispError> for LispError {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/lib.rs:41:33
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn from(error: std::option::NoneError) -> Self {
[INFO] [stdout]    |                                 ^^^^^^^^^ not found in `std::option`
[INFO] [stdout]    |
[INFO] [stdout] help: there is an enum variant `crate::LispError::NoneError`; try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn from(error: crate::LispError) -> Self {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/debugger.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/debugger.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/debugger.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/debugger.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BuiltinRegistry`, `self`
[INFO] [stdout]  --> src/debugger.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::builtin::{self, BuiltinRegistry};
[INFO] [stdout]   |                      ^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Program`
[INFO] [stdout]  --> src/debugger.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::compiler::{Compiler, Program};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Instruction`, `LabeledInstruction`
[INFO] [stdout]  --> src/debugger.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::instruction::{Instruction, LabeledInstruction};
[INFO] [stdout]   |                          ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::symbol_table::Symbol`
[INFO] [stdout]   --> src/debugger.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::symbol_table::Symbol;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::vm::Context`
[INFO] [stdout]   --> src/debugger.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::vm::Context;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arity`, `LispFn1`, `LispFn2`, `LispFn3`, `LispFnN`
[INFO] [stdout]   --> src/debugger.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::{Arity, LispFn1, LispFn2, LispFn3, LispFnN};
[INFO] [stdout]    |             ^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Hash`, `Hasher`
[INFO] [stdout]  --> src/value.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                 ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/value.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |     Foreign(Rc<ForeignValue>),
[INFO] [stdout]    |                ^^^^^^^^^^^^ help: use `dyn`: `dyn ForeignValue`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/vm/mod.rs:103:28
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub output: Rc<RefCell<Write>>,
[INFO] [stdout]     |                            ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/vm/mod.rs:110:35
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn new(output: Rc<RefCell<Write>>) -> VM {
[INFO] [stdout]     |                                   ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builtin/bignum.rs:30:23
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BuiltinRegistry`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builtin/bitwise.rs:59:23
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BuiltinRegistry`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/builtin/comparison.rs:116:23
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BuiltinRegistry`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/builtin/list.rs:311:23
[INFO] [stdout]     |
[INFO] [stdout] 311 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BuiltinRegistry`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/builtin/math.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/builtin/math.rs:120:5
[INFO] [stdout]     |
[INFO] [stdout] 120 |     (c as isize)
[INFO] [stdout]     |     ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/builtin/math.rs:735:23
[INFO] [stdout]     |
[INFO] [stdout] 735 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BuiltinRegistry`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builtin/misc.rs:93:23
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BuiltinRegistry`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/builtin/string.rs:127:23
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BuiltinRegistry`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builtin/types.rs:63:23
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BuiltinRegistry`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builtin/mod.rs:23:23
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BuiltinRegistry`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:244:20
[INFO] [stdout]     |
[INFO] [stdout] 244 |                 'A'...'Z' => true,
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:245:20
[INFO] [stdout]     |
[INFO] [stdout] 245 |                 'a'...'z' => true,
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:246:20
[INFO] [stdout]     |
[INFO] [stdout] 246 |                 '0'...'9' => true,
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:498:28
[INFO] [stdout]     |
[INFO] [stdout] 498 |                 first @ 'A'...'Z'
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:499:30
[INFO] [stdout]     |
[INFO] [stdout] 499 |                 | first @ 'a'...'z'
[INFO] [stdout]     |                              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:513:28
[INFO] [stdout]     |
[INFO] [stdout] 513 |                 first @ '0'...'9' => {
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]   --> src/lib.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::cell::{Cell, Ref, RefCell};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/compiler/mod.rs:183:30
[INFO] [stdout]     |
[INFO] [stdout] 164 | /     pub fn expand_macros(&mut self, datum: Value) -> LispResult<Value> {
[INFO] [stdout] 165 | |         if datum.is_true_list() {
[INFO] [stdout] 166 | |             let mut elems = datum.as_list()?;
[INFO] [stdout] 167 | |             // FIXME: A list should never be empty,
[INFO] [stdout] ...   |
[INFO] [stdout] 183 | |                 let sr = rule?.clone();
[INFO] [stdout]     | |                              ^ use `.ok_or(...)?` to provide an error compatible with `Result<Value, LispError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 199 | |         }
[INFO] [stdout] 200 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<Value, LispError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/compiler/mod.rs:363:38
[INFO] [stdout]     |
[INFO] [stdout] 334 | /     pub fn preprocess_meaning(
[INFO] [stdout] 335 | |         &mut self,
[INFO] [stdout] 336 | |         datum: Value,
[INFO] [stdout] 337 | |         env: AEnvRef,
[INFO] [stdout] ...   |
[INFO] [stdout] 363 | |                         let sr = rule?.clone();
[INFO] [stdout]     | |                                      ^ use `.ok_or(...)?` to provide an error compatible with `Result<Vec<(Instruction, Option<usize>)>, LispError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 379 | |         }
[INFO] [stdout] 380 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<Vec<(Instruction, Option<usize>)>, LispError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/compiler/mod.rs:605:33
[INFO] [stdout]     |
[INFO] [stdout] 589 | /     fn preprocess_meaning_alternative(
[INFO] [stdout] 590 | |         &mut self,
[INFO] [stdout] 591 | |         mut datums: Vec<Value>,
[INFO] [stdout] 592 | |         env: AEnvRef,
[INFO] [stdout] ...   |
[INFO] [stdout] 605 | |         let mut last = alt.pop()?;
[INFO] [stdout]     | |                                 ^ use `.ok_or(...)?` to provide an error compatible with `Result<Vec<(Instruction, Option<usize>)>, LispError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 623 | |         Ok(test)
[INFO] [stdout] 624 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<Vec<(Instruction, Option<usize>)>, LispError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/doc.rs:55:61
[INFO] [stdout]    |
[INFO] [stdout] 55 |         Err(why) => panic!("couldn't spawn pandoc: {}", why.description()),
[INFO] [stdout]    |                                                             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/doc.rs:60:70
[INFO] [stdout]    |
[INFO] [stdout] 60 |         Err(why) => panic!("couldn't write to pandoc stdin: {}", why.description()),
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/vm/mod.rs:392:51
[INFO] [stdout]     |
[INFO] [stdout] 230 | /     fn run_instruction(&mut self, inst: u8) -> LispResult<()> {
[INFO] [stdout] 231 | |         match inst {
[INFO] [stdout] 232 | |             // Return
[INFO] [stdout] 233 | |             0x00_u8 => self.bytecode.restore_pc()?,
[INFO] [stdout] ...   |
[INFO] [stdout] 392 | |                 self.env = self.env.parent.clone()?;
[INFO] [stdout]     | |                                                   ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), LispError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 647 | |         Ok(())
[INFO] [stdout] 648 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<(), LispError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/vm/mod.rs:623:17
[INFO] [stdout]     |
[INFO] [stdout] 622 |                 unimplemented!();
[INFO] [stdout]     |                 ----------------- any code following this expression is unreachable
[INFO] [stdout] 623 |                 let input = self.val.take();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/syntax_rule.rs:139:57
[INFO] [stdout]     |
[INFO] [stdout] 65  | /     pub fn matches(
[INFO] [stdout] 66  | |         &self,
[INFO] [stdout] 67  | |         pattern: &Pattern,
[INFO] [stdout] 68  | |         datum: Value,
[INFO] [stdout] ...   |
[INFO] [stdout] 139 | |                             coll.push(subbinding.get(&k)?.clone());
[INFO] [stdout]     | |                                                         ^ use `.ok_or(...)?` to provide an error compatible with `Result<bool, LispError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 149 | |         }
[INFO] [stdout] 150 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<bool, LispError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/syntax_rule.rs:190:62
[INFO] [stdout]     |
[INFO] [stdout] 174 | /     pub fn parse(expr: Value, literals: &Vec<Symbol>) -> LispResult<Pattern> {
[INFO] [stdout] 175 | |         match expr {
[INFO] [stdout] 176 | |             Value::Nil => Ok(Pattern::List(vec![])),
[INFO] [stdout] 177 | |             Value::Symbol(s) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 190 | |                         let rest = Pattern::parse(elems.pop()?, literals)?;
[INFO] [stdout]     | |                                                              ^ use `.ok_or(...)?` to provide an error compatible with `Result<syntax_rule::Pattern, LispError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 207 | |         }
[INFO] [stdout] 208 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `Result<syntax_rule::Pattern, LispError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]   --> src/lib.rs:31:23
[INFO] [stdout]    |
[INFO] [stdout] 31 | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors; 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0412, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `euler_lisp`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "fdc6575cc140e38e23e1ebba827bec73af18a45d2ad9ab632627b6d7ccd617cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdc6575cc140e38e23e1ebba827bec73af18a45d2ad9ab632627b6d7ccd617cc", kill_on_drop: false }`
[INFO] [stdout] fdc6575cc140e38e23e1ebba827bec73af18a45d2ad9ab632627b6d7ccd617cc
