Dec 06 11:18:36.506 INFO testing NicholasLYang/saber against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 06 11:18:36.506 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 11:18:36.655 INFO [stdout] 996c3d2bb65c8754ef6cbaa7fec049f0bc0d15d530b1ec30a8fe467edd4d6d4f
Dec 06 11:18:36.657 INFO running `"docker" "start" "-a" "996c3d2bb65c8754ef6cbaa7fec049f0bc0d15d530b1ec30a8fe467edd4d6d4f"`
Dec 06 11:18:37.130 INFO [stderr] usermod: no changes
Dec 06 11:18:37.253 INFO [stderr]    Compiling log v0.4.6
Dec 06 11:18:37.255 INFO [stderr]    Compiling syn v0.15.15
Dec 06 11:18:37.255 INFO [stderr]    Compiling string_cache_codegen v0.4.2
Dec 06 11:18:37.620 INFO [stderr]    Compiling ena v0.10.1
Dec 06 11:18:39.456 INFO [stderr]    Compiling string_cache v0.7.3
Dec 06 11:18:44.096 INFO [stderr]    Compiling serde_derive v1.0.80
Dec 06 11:18:56.832 INFO [stderr]    Compiling docopt v1.0.2
Dec 06 11:19:01.144 INFO [stderr]    Compiling lalrpop v0.16.1
Dec 06 11:19:49.599 INFO [stderr]    Compiling saber v0.1.0 (/source)
Dec 06 11:19:56.672 INFO [stderr] error[E0428]: the name `Expr` is defined multiple times
Dec 06 11:19:56.672 INFO [stderr]   --> src/ast.rs:22:1
Dec 06 11:19:56.672 INFO [stderr]    |
Dec 06 11:19:56.672 INFO [stderr] 12 | pub enum Expr {
Dec 06 11:19:56.673 INFO [stderr]    | ------------- previous definition of the type `Expr` here
Dec 06 11:19:56.673 INFO [stderr] ...
Dec 06 11:19:56.673 INFO [stderr] 22 | pub enum Expr {
Dec 06 11:19:56.673 INFO [stderr]    | ^^^^^^^^^^^^^ `Expr` redefined here
Dec 06 11:19:56.673 INFO [stderr]    |
Dec 06 11:19:56.673 INFO [stderr]    = note: `Expr` must be defined only once in the type namespace of this module
Dec 06 11:19:56.673 INFO [stderr] 
Dec 06 11:19:56.716 INFO [stderr] error[E0432]: unresolved import `ast::Asgn`
Dec 06 11:19:56.716 INFO [stderr]  --> src/code_generator.rs:1:11
Dec 06 11:19:56.716 INFO [stderr]   |
Dec 06 11:19:56.716 INFO [stderr] 1 | use ast::{Asgn, Expr, Name, Op, Pat, Stmt, Unary, Value};
Dec 06 11:19:56.717 INFO [stderr]   |           ^^^^ no `Asgn` in `ast`
Dec 06 11:19:56.717 INFO [stderr] 
Dec 06 11:19:56.717 INFO [stderr] error[E0432]: unresolved import `ast::Asgn`
Dec 06 11:19:56.717 INFO [stderr]  --> /target/debug/build/saber-a082cb03dbb1edc2/out/parser.rs:4:41
Dec 06 11:19:56.717 INFO [stderr]   |
Dec 06 11:19:56.718 INFO [stderr] 4 | use ast::{Op, Expr, Unary, Value, Stmt, Asgn, Name, Pat};
Dec 06 11:19:56.718 INFO [stderr]   |                                         ^^^^ no `Asgn` in `ast`
Dec 06 11:19:56.718 INFO [stderr] 
Dec 06 11:19:56.718 INFO [stderr] error[E0432]: unresolved import `ast::Asgn`
Dec 06 11:19:56.719 INFO [stderr]   --> /target/debug/build/saber-a082cb03dbb1edc2/out/parser.rs:13:45
Dec 06 11:19:56.719 INFO [stderr]    |
Dec 06 11:19:56.719 INFO [stderr] 13 |     use ast::{Op, Expr, Unary, Value, Stmt, Asgn, Name, Pat};
Dec 06 11:19:56.719 INFO [stderr]    |                                             ^^^^ no `Asgn` in `ast`
Dec 06 11:19:56.719 INFO [stderr] 
Dec 06 11:19:56.756 INFO [stderr] warning: unused import: `Name`
Dec 06 11:19:56.757 INFO [stderr]  --> /target/debug/build/saber-a082cb03dbb1edc2/out/parser.rs:4:47
Dec 06 11:19:56.757 INFO [stderr]   |
Dec 06 11:19:56.757 INFO [stderr] 4 | use ast::{Op, Expr, Unary, Value, Stmt, Asgn, Name, Pat};
Dec 06 11:19:56.757 INFO [stderr]   |                                               ^^^^
Dec 06 11:19:56.757 INFO [stderr]   |
Dec 06 11:19:56.757 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 11:19:56.757 INFO [stderr] 
Dec 06 11:19:56.761 INFO [stderr] warning: unused imports: `Expr`, `Value`
Dec 06 11:19:56.761 INFO [stderr]  --> src/main.rs:8:11
Dec 06 11:19:56.761 INFO [stderr]   |
Dec 06 11:19:56.761 INFO [stderr] 8 | use ast::{Expr, Value};
Dec 06 11:19:56.761 INFO [stderr]   |           ^^^^  ^^^^^
Dec 06 11:19:56.761 INFO [stderr] 
Dec 06 11:19:56.761 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 06 11:19:56.761 INFO [stderr]  --> src/main.rs:9:5
Dec 06 11:19:56.761 INFO [stderr]   |
Dec 06 11:19:56.761 INFO [stderr] 9 | use std::collections::HashMap;
Dec 06 11:19:56.762 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 11:19:56.762 INFO [stderr] 
Dec 06 11:19:56.762 INFO [stderr] warning: unused import: `Name`
Dec 06 11:19:56.762 INFO [stderr]  --> src/code_generator.rs:1:23
Dec 06 11:19:56.762 INFO [stderr]   |
Dec 06 11:19:56.762 INFO [stderr] 1 | use ast::{Asgn, Expr, Name, Op, Pat, Stmt, Unary, Value};
Dec 06 11:19:56.762 INFO [stderr]   |                       ^^^^
Dec 06 11:19:56.762 INFO [stderr] 
Dec 06 11:19:56.763 INFO [stderr] warning: unused import: `TypedOp`
Dec 06 11:19:56.763 INFO [stderr]  --> src/typechecker.rs:2:44
Dec 06 11:19:56.763 INFO [stderr]   |
Dec 06 11:19:56.763 INFO [stderr] 2 | use ast::{Expr, Name, Op, Type, TypedExpr, TypedOp};
Dec 06 11:19:56.763 INFO [stderr]   |                                            ^^^^^^^
Dec 06 11:19:56.763 INFO [stderr] 
Dec 06 11:19:56.820 INFO [stderr] error[E0119]: conflicting implementations of trait `std::cmp::PartialEq` for type `ast::Expr`:
Dec 06 11:19:56.820 INFO [stderr]   --> src/ast.rs:21:17
Dec 06 11:19:56.820 INFO [stderr]    |
Dec 06 11:19:56.820 INFO [stderr] 11 | #[derive(Debug, PartialEq, Clone)]
Dec 06 11:19:56.820 INFO [stderr]    |                 --------- first implementation here
Dec 06 11:19:56.820 INFO [stderr] ...
Dec 06 11:19:56.820 INFO [stderr] 21 | #[derive(Debug, PartialEq, Clone)]
Dec 06 11:19:56.820 INFO [stderr]    |                 ^^^^^^^^^ conflicting implementation for `ast::Expr`
Dec 06 11:19:56.820 INFO [stderr] 
Dec 06 11:19:56.829 INFO [stderr] error[E0119]: conflicting implementations of trait `std::clone::Clone` for type `ast::Expr`:
Dec 06 11:19:56.829 INFO [stderr]   --> src/ast.rs:21:28
Dec 06 11:19:56.829 INFO [stderr]    |
Dec 06 11:19:56.829 INFO [stderr] 11 | #[derive(Debug, PartialEq, Clone)]
Dec 06 11:19:56.829 INFO [stderr]    |                            ----- first implementation here
Dec 06 11:19:56.829 INFO [stderr] ...
Dec 06 11:19:56.829 INFO [stderr] 21 | #[derive(Debug, PartialEq, Clone)]
Dec 06 11:19:56.829 INFO [stderr]    |                            ^^^^^ conflicting implementation for `ast::Expr`
Dec 06 11:19:56.829 INFO [stderr] 
Dec 06 11:19:56.838 INFO [stderr] error[E0119]: conflicting implementations of trait `std::fmt::Debug` for type `ast::Expr`:
Dec 06 11:19:56.839 INFO [stderr]   --> src/ast.rs:21:10
Dec 06 11:19:56.839 INFO [stderr]    |
Dec 06 11:19:56.839 INFO [stderr] 11 | #[derive(Debug, PartialEq, Clone)]
Dec 06 11:19:56.839 INFO [stderr]    |          ----- first implementation here
Dec 06 11:19:56.839 INFO [stderr] ...
Dec 06 11:19:56.839 INFO [stderr] 21 | #[derive(Debug, PartialEq, Clone)]
Dec 06 11:19:56.839 INFO [stderr]    |          ^^^^^ conflicting implementation for `ast::Expr`
Dec 06 11:19:56.839 INFO [stderr] 
Dec 06 11:19:56.848 INFO [stderr] error: aborting due to 7 previous errors
Dec 06 11:19:56.848 INFO [stderr] 
Dec 06 11:19:56.848 INFO [stderr] Some errors occurred: E0119, E0428, E0432.
Dec 06 11:19:56.848 INFO [stderr] For more information about an error, try `rustc --explain E0119`.
Dec 06 11:19:56.860 INFO [stderr] error: Could not compile `saber`.
Dec 06 11:19:56.860 INFO [stderr] 
Dec 06 11:19:56.860 INFO [stderr] To learn more, run the command again with --verbose.
Dec 06 11:19:56.864 INFO [stderr] su: No module specific data is present
Dec 06 11:19:57.334 INFO running `"docker" "inspect" "996c3d2bb65c8754ef6cbaa7fec049f0bc0d15d530b1ec30a8fe467edd4d6d4f"`
Dec 06 11:19:57.529 INFO running `"docker" "rm" "-f" "996c3d2bb65c8754ef6cbaa7fec049f0bc0d15d530b1ec30a8fe467edd4d6d4f"`
Dec 06 11:19:57.706 INFO [stdout] 996c3d2bb65c8754ef6cbaa7fec049f0bc0d15d530b1ec30a8fe467edd4d6d4f