[INFO] crate numtraits 0.0.1 is already in cache
[INFO] extracting crate numtraits 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/numtraits/0.0.1
[INFO] extracting crate numtraits 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/numtraits/0.0.1
[INFO] validating manifest of numtraits-0.0.1 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 numtraits-0.0.1 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 numtraits-0.0.1
[INFO] finished frobbing numtraits-0.0.1
[INFO] frobbed toml for numtraits-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/numtraits/0.0.1/Cargo.toml
[INFO] started frobbing numtraits-0.0.1
[INFO] finished frobbing numtraits-0.0.1
[INFO] frobbed toml for numtraits-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/numtraits/0.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 numtraits-0.0.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/numtraits/0.0.1:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 6856cee97feacbca5d4f594588ded09856ba0a1df69813f038da1067dc1e9601
[INFO] running `"docker" "start" "-a" "6856cee97feacbca5d4f594588ded09856ba0a1df69813f038da1067dc1e9601"`
[INFO] [stderr]    Compiling numtraits v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/lib.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | / macro_rules! from_to {
[INFO] [stderr] 51 | |     ($tr:ident, $f:ident, $t:ident) => {
[INFO] [stderr] 52 | |         impl $tr<$f> for $t {
[INFO] [stderr] 53 | |             fn from(x: $f) -> $t { x as $t }
[INFO] [stderr] 54 | |         }
[INFO] [stderr] 55 | |     }
[INFO] [stderr] 56 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `"docker" "inspect" "6856cee97feacbca5d4f594588ded09856ba0a1df69813f038da1067dc1e9601"`
[INFO] running `"docker" "rm" "-f" "6856cee97feacbca5d4f594588ded09856ba0a1df69813f038da1067dc1e9601"`
[INFO] [stdout] 6856cee97feacbca5d4f594588ded09856ba0a1df69813f038da1067dc1e9601
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/numtraits/0.0.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d925385e28b0dfb1bc49be39effcf98ed115bad265b8e87597894d5820f32fc2
[INFO] running `"docker" "start" "-a" "d925385e28b0dfb1bc49be39effcf98ed115bad265b8e87597894d5820f32fc2"`
[INFO] [stderr]    Compiling numtraits v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/lib.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | / macro_rules! from_to {
[INFO] [stderr] 51 | |     ($tr:ident, $f:ident, $t:ident) => {
[INFO] [stderr] 52 | |         impl $tr<$f> for $t {
[INFO] [stderr] 53 | |             fn from(x: $f) -> $t { x as $t }
[INFO] [stderr] 54 | |         }
[INFO] [stderr] 55 | |     }
[INFO] [stderr] 56 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `doit`
[INFO] [stderr]    --> src/lib.rs:121:1
[INFO] [stderr]     |
[INFO] [stderr] 121 | fn doit<T: UpCastAs<u64>>() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `"docker" "inspect" "d925385e28b0dfb1bc49be39effcf98ed115bad265b8e87597894d5820f32fc2"`
[INFO] running `"docker" "rm" "-f" "d925385e28b0dfb1bc49be39effcf98ed115bad265b8e87597894d5820f32fc2"`
[INFO] [stdout] d925385e28b0dfb1bc49be39effcf98ed115bad265b8e87597894d5820f32fc2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/numtraits/0.0.1:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 64deca0a74d365fc3314a1f955a5fc119a0b371c64ad67a5e6c8ac8f77e9ca27
[INFO] running `"docker" "start" "-a" "64deca0a74d365fc3314a1f955a5fc119a0b371c64ad67a5e6c8ac8f77e9ca27"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/numtraits-9e8893cca57537ea
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests numtraits
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs -  (line 32) ... FAILED
[INFO] [stdout] test src/lib.rs -  (line 18) ... FAILED
[INFO] [stdout] test src/lib.rs -  (line 43) ... FAILED
[INFO] [stdout] test src/lib.rs -  (line 4) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs -  (line 32) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `UpCastAs`
[INFO] [stdout]  --> src/lib.rs:34:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let _: T = UpCastAs::from(10u8);
[INFO] [stdout]   |                ^^^^^^^^ use of undeclared type or module `UpCastAs`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `UpCastAs`
[INFO] [stdout]  --> src/lib.rs:35:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let _: T = UpCastAs::from(10u16);
[INFO] [stdout]   |                ^^^^^^^^ use of undeclared type or module `UpCastAs`
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `UpCastAs` in this scope
[INFO] [stdout]  --> src/lib.rs:33:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn example<T: UpCastAs<u32>>() {
[INFO] [stdout]   |               ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs -  (line 18) stdout ----
[INFO] [stdout] error[E0405]: cannot find trait `UpCastAs` in this scope
[INFO] [stdout]  --> src/lib.rs:19:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn example<T: UpCastAs<u32>>() {
[INFO] [stdout]   |               ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:20:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let _: T = cast(10u8);
[INFO] [stdout]   |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:21:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let _ = cast::<u8, T>(10u8); // Alternate syntax, uglier.
[INFO] [stdout]   |             ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:22:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let _: T = cast(10u16);
[INFO] [stdout]   |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:23:16
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let _: T = cast(10u32);
[INFO] [stdout]   |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:24:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let _: T = cast(10u64); // Error, u64 > u32
[INFO] [stdout]   |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:25:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let _: T = cast(10f32); // Error, f32 > u32
[INFO] [stdout]   |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]   --> src/lib.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let _: T = cast(10f64); // Error, f32 > u32
[INFO] [stdout]    |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0425.
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs -  (line 43) stdout ----
[INFO] [stdout] error[E0405]: cannot find trait `UpCastAs` in this scope
[INFO] [stdout]  --> src/lib.rs:44:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn example<T: UpCastAs<u32>>() {
[INFO] [stdout]   |               ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0405`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs -  (line 4) stdout ----
[INFO] [stdout] error: chained comparison operators require parentheses
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: use `::<...>` instead of `<...>` if you meant to specify type arguments
[INFO] [stdout]   = help: or use `(...)` if you meant to specify fn arguments
[INFO] [stdout] 
[INFO] [stdout] error: chained comparison operators require parentheses
[INFO] [stdout]  --> src/lib.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: use `::<...>` instead of `<...>` if you meant to specify type arguments
[INFO] [stdout]   = help: or use `(...)` if you meant to specify fn arguments
[INFO] [stdout] 
[INFO] [stdout] error: chained comparison operators require parentheses
[INFO] [stdout]  --> src/lib.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |                 ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: use `::<...>` instead of `<...>` if you meant to specify type arguments
[INFO] [stdout]   = help: or use `(...)` if you meant to specify fn arguments
[INFO] [stdout] 
[INFO] [stdout] error: chained comparison operators require parentheses
[INFO] [stdout]  --> src/lib.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |                       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: use `::<...>` instead of `<...>` if you meant to specify type arguments
[INFO] [stdout]   = help: or use `(...)` if you meant to specify fn arguments
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, `}`, or an operator, found `f64`
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |                                 - expected one of 8 possible tokens here
[INFO] [stdout] 4 | f64 > f32 > i64 > i32 > i16 > i8
[INFO] [stdout]   | ^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected value, found builtin type `f64`
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   | ^^^ not a value
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected value, found builtin type `f32`
[INFO] [stdout]  --> src/lib.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |       ^^^ not a value
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected value, found builtin type `u64`
[INFO] [stdout]  --> src/lib.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |             ^^^ not a value
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected value, found builtin type `u32`
[INFO] [stdout]  --> src/lib.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |                   ^^^ not a value
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected value, found builtin type `u16`
[INFO] [stdout]  --> src/lib.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |                         ^^^ not a value
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected value, found builtin type `u8`
[INFO] [stdout]  --> src/lib.rs:5:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |                               ^^ not a value
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn main() {
[INFO] [stdout]   |           - expected `()` because of default return type
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected (), found bool
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected type `()`
[INFO] [stdout]              found type `bool`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0423.
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs -  (line 18)
[INFO] [stdout]     src/lib.rs -  (line 32)
[INFO] [stdout]     src/lib.rs -  (line 4)
[INFO] [stdout]     src/lib.rs -  (line 43)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "64deca0a74d365fc3314a1f955a5fc119a0b371c64ad67a5e6c8ac8f77e9ca27"`
[INFO] running `"docker" "rm" "-f" "64deca0a74d365fc3314a1f955a5fc119a0b371c64ad67a5e6c8ac8f77e9ca27"`
[INFO] [stdout] 64deca0a74d365fc3314a1f955a5fc119a0b371c64ad67a5e6c8ac8f77e9ca27