[INFO] crate distributions 0.0.2 is already in cache
[INFO] extracting crate distributions 0.0.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/distributions/0.0.2
[INFO] extracting crate distributions 0.0.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/distributions/0.0.2
[INFO] validating manifest of distributions-0.0.2 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of distributions-0.0.2 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing distributions-0.0.2
[INFO] finished frobbing distributions-0.0.2
[INFO] frobbed toml for distributions-0.0.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/distributions/0.0.2/Cargo.toml
[INFO] started frobbing distributions-0.0.2
[INFO] finished frobbing distributions-0.0.2
[INFO] frobbed toml for distributions-0.0.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/distributions/0.0.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing distributions-0.0.2 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/distributions/0.0.2:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] ffd11cb2dd5043e4937a129f372348f3909c6ff85a7b4f5068260de927fea43d
[INFO] running `"docker" "start" "-a" "ffd11cb2dd5043e4937a129f372348f3909c6ff85a7b4f5068260de927fea43d"`
[INFO] [stderr]    Compiling GSL v0.4.31
[INFO] [stderr]    Compiling distributions v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] error: expected identifier, found keyword `mod`
[INFO] [stderr]  --> src/gaussian.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::rand::{mod, Rng, task_rng, TaskRng};
[INFO] [stderr]   |                 ^^^ expected identifier, found keyword
[INFO] [stderr] help: you can escape reserved keywords to use them as identifiers
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::rand::{r#mod, Rng, task_rng, TaskRng};
[INFO] [stderr]   |                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: invalid width `` for integer literal
[INFO] [stderr]   --> src/gaussian.rs:68:22
[INFO] [stderr]    |
[INFO] [stderr] 68 |     for _ in range(0,20i) {
[INFO] [stderr]    |                      ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: valid widths are 8, 16, 32, 64 and 128
[INFO] [stderr] 
[INFO] [stderr] error: expected identifier, found keyword `mod`
[INFO] [stderr]  --> src/uniform.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::rand::{mod, Rng, task_rng, TaskRng};
[INFO] [stderr]   |                 ^^^ expected identifier, found keyword
[INFO] [stderr] help: you can escape reserved keywords to use them as identifiers
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::rand::{r#mod, Rng, task_rng, TaskRng};
[INFO] [stderr]   |                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: invalid width `` for integer literal
[INFO] [stderr]   --> src/uniform.rs:74:20
[INFO] [stderr]    |
[INFO] [stderr] 74 |     for _ in range(0u, 99u) {
[INFO] [stderr]    |                    ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: valid widths are 8, 16, 32, 64 and 128
[INFO] [stderr] 
[INFO] [stderr] error: invalid width `` for integer literal
[INFO] [stderr]   --> src/uniform.rs:74:24
[INFO] [stderr]    |
[INFO] [stderr] 74 |     for _ in range(0u, 99u) {
[INFO] [stderr]    |                        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: valid widths are 8, 16, 32, 64 and 128
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![experimental]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]  --> src/lib.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![experimental]
[INFO] [stderr]   |    ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::Float`
[INFO] [stderr]  --> src/lib.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::num::Float;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `rand` in `std`
[INFO] [stderr]  --> src/gaussian.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::rand::distributions::{Sample, Normal,IndependentSample};
[INFO] [stderr]   |          ^^^^ could not find `rand` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::rand`
[INFO] [stderr]  --> src/gaussian.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::rand::{mod, Rng, task_rng, TaskRng};
[INFO] [stderr]   |          ^^^^ could not find `rand` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::Float`
[INFO] [stderr]  --> src/gaussian.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::num::Float;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `rand` in `std`
[INFO] [stderr]  --> src/uniform.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::rand::distributions::{Sample, Normal,IndependentSample};
[INFO] [stderr]   |          ^^^^ could not find `rand` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::rand`
[INFO] [stderr]  --> src/uniform.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::rand::{mod, Rng, task_rng, TaskRng};
[INFO] [stderr]   |          ^^^^ could not find `rand` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::Float`
[INFO] [stderr]  --> src/uniform.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::num::Float;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Normal`
[INFO] [stderr]   --> src/gaussian.rs:19:21
[INFO] [stderr]    |
[INFO] [stderr] 19 |             distri: Normal::new(mu,sigma),
[INFO] [stderr]    |                     ^^^^^^ use of undeclared type or module `Normal`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Normal` in this scope
[INFO] [stderr]   --> src/gaussian.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     distri: Normal,
[INFO] [stderr]    |             ^^^^^^ not found in this scope
[INFO] [stderr] help: there is an enum variant `std::num::FpCategory::Normal` and 1 other; try using the variant's enum
[INFO] [stderr]    |
[INFO] [stderr] 11 |     distri: std::num::FpCategory,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 11 |     distri: std::path::Component,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Sample` in this scope
[INFO] [stderr]   --> src/gaussian.rs:23:6
[INFO] [stderr]    |
[INFO] [stderr] 23 | impl Sample<f64> for Gaussian {
[INFO] [stderr]    |      ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `IndependentSample` in this scope
[INFO] [stderr]   --> src/gaussian.rs:28:6
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl IndependentSample<f64> for Gaussian {
[INFO] [stderr]    |      ^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Sample` in this scope
[INFO] [stderr]   --> src/uniform.rs:23:6
[INFO] [stderr]    |
[INFO] [stderr] 23 | impl Sample<f64> for Uniform {
[INFO] [stderr]    |      ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `IndependentSample` in this scope
[INFO] [stderr]   --> src/uniform.rs:29:6
[INFO] [stderr]    |
[INFO] [stderr] 29 | impl IndependentSample<f64> for Uniform {
[INFO] [stderr]    |      ^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(non_ascii_idents)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 21 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0405, E0412, E0432, E0433, E0554, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0405`.
[INFO] [stderr] error: Could not compile `distributions`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ffd11cb2dd5043e4937a129f372348f3909c6ff85a7b4f5068260de927fea43d"`
[INFO] running `"docker" "rm" "-f" "ffd11cb2dd5043e4937a129f372348f3909c6ff85a7b4f5068260de927fea43d"`
[INFO] [stdout] ffd11cb2dd5043e4937a129f372348f3909c6ff85a7b4f5068260de927fea43d