[INFO] updating cached repository https://github.com/rail44/spectr
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] e6a6c6565f3ad910b12b6a184462fd7c82e363b4
[INFO] testing rail44/spectr against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Frail44%2Fspectr" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rail44/spectr on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rail44/spectr
[INFO] finished tweaking git repo https://github.com/rail44/spectr
[INFO] tweaked toml for git repo https://github.com/rail44/spectr written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/rail44/spectr already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] f571329f05d8850ef36bae6882d3590f025d8c630687ed000aee5b99e4656575
[INFO] running `"docker" "start" "-a" "f571329f05d8850ef36bae6882d3590f025d8c630687ed000aee5b99e4656575"`
[INFO] [stderr]    Compiling cc v1.0.42
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling backtrace v0.3.37
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling spctr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/stack.rs:135:24
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn eval(&self, mut env: Env) -> Result<Value, failure::Error> {
[INFO] [stderr]     |                        ----^^^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.23s
[INFO] running `"docker" "inspect" "f571329f05d8850ef36bae6882d3590f025d8c630687ed000aee5b99e4656575"`
[INFO] running `"docker" "rm" "-f" "f571329f05d8850ef36bae6882d3590f025d8c630687ed000aee5b99e4656575"`
[INFO] [stdout] f571329f05d8850ef36bae6882d3590f025d8c630687ed000aee5b99e4656575
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 90390a0784380c405d6711ee4ea1a26c116c360485d5b839f3109f963842554a
[INFO] running `"docker" "start" "-a" "90390a0784380c405d6711ee4ea1a26c116c360485d5b839f3109f963842554a"`
[INFO] [stderr]    Compiling spctr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:50:40
[INFO] [stderr]    |
[INFO] [stderr] 50 |         eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                        |
[INFO] [stderr]    |                                        expected struct `stack::Env`, found mutable reference
[INFO] [stderr]    |                                        help: consider removing the borrow: `Env::root()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `stack::Env`
[INFO] [stderr]               found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:70:40
[INFO] [stderr]    |
[INFO] [stderr] 70 |         eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                        |
[INFO] [stderr]    |                                        expected struct `stack::Env`, found mutable reference
[INFO] [stderr]    |                                        help: consider removing the borrow: `Env::root()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `stack::Env`
[INFO] [stderr]               found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:88:40
[INFO] [stderr]    |
[INFO] [stderr] 88 |         eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                        |
[INFO] [stderr]    |                                        expected struct `stack::Env`, found mutable reference
[INFO] [stderr]    |                                        help: consider removing the borrow: `Env::root()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `stack::Env`
[INFO] [stderr]               found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:101:40
[INFO] [stderr]     |
[INFO] [stderr] 101 |         eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        expected struct `stack::Env`, found mutable reference
[INFO] [stderr]     |                                        help: consider removing the borrow: `Env::root()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `stack::Env`
[INFO] [stderr]                found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:120:49
[INFO] [stderr]     |
[INFO] [stderr] 120 |     let result = eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                                 |
[INFO] [stderr]     |                                                 expected struct `stack::Env`, found mutable reference
[INFO] [stderr]     |                                                 help: consider removing the borrow: `Env::root()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `stack::Env`
[INFO] [stderr]                found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:133:49
[INFO] [stderr]     |
[INFO] [stderr] 133 |     let result = eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                                 |
[INFO] [stderr]     |                                                 expected struct `stack::Env`, found mutable reference
[INFO] [stderr]     |                                                 help: consider removing the borrow: `Env::root()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `stack::Env`
[INFO] [stderr]                found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:153:40
[INFO] [stderr]     |
[INFO] [stderr] 153 |         eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        expected struct `stack::Env`, found mutable reference
[INFO] [stderr]     |                                        help: consider removing the borrow: `Env::root()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `stack::Env`
[INFO] [stderr]                found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:177:40
[INFO] [stderr]     |
[INFO] [stderr] 177 |         eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        expected struct `stack::Env`, found mutable reference
[INFO] [stderr]     |                                        help: consider removing the borrow: `Env::root()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `stack::Env`
[INFO] [stderr]                found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/json.rs:43:63
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let result = stack::eval(&stack::get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]    |                                                               ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                               |
[INFO] [stderr]    |                                                               expected struct `stack::Env`, found mutable reference
[INFO] [stderr]    |                                                               help: consider removing the borrow: `Env::root()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `stack::Env`
[INFO] [stderr]               found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/list.rs:52:49
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let result = eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                 |
[INFO] [stderr]    |                                                 expected struct `stack::Env`, found mutable reference
[INFO] [stderr]    |                                                 help: consider removing the borrow: `Env::root()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `stack::Env`
[INFO] [stderr]               found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/map.rs:56:49
[INFO] [stderr]    |
[INFO] [stderr] 56 |     let result = eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                 |
[INFO] [stderr]    |                                                 expected struct `stack::Env`, found mutable reference
[INFO] [stderr]    |                                                 help: consider removing the borrow: `Env::root()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `stack::Env`
[INFO] [stderr]               found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/map.rs:72:49
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let result = eval(&get_stack(ast).unwrap(), &mut Env::root())
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                 |
[INFO] [stderr]    |                                                 expected struct `stack::Env`, found mutable reference
[INFO] [stderr]    |                                                 help: consider removing the borrow: `Env::root()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `stack::Env`
[INFO] [stderr]               found type `&mut stack::Env`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/string.rs:30:49
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let result = eval(&get_stack(ast).unwrap(), &mut Default::default())
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                 |
[INFO] [stderr]    |                                                 expected struct `stack::Env`, found &mut _
[INFO] [stderr]    |                                                 help: consider removing the borrow: `Default::default()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `stack::Env`
[INFO] [stderr]               found type `&mut _`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 13 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `spctr`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "90390a0784380c405d6711ee4ea1a26c116c360485d5b839f3109f963842554a"`
[INFO] running `"docker" "rm" "-f" "90390a0784380c405d6711ee4ea1a26c116c360485d5b839f3109f963842554a"`
[INFO] [stdout] 90390a0784380c405d6711ee4ea1a26c116c360485d5b839f3109f963842554a