[INFO] updating cached repository https://github.com/benglard/RustyNet
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 9dd8d77427a33fb470bd56dc8830597edf80268b
[INFO] testing benglard/RustyNet against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenglard%2FRustyNet" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benglard/RustyNet on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/benglard/RustyNet
[INFO] finished tweaking git repo https://github.com/benglard/RustyNet
[INFO] tweaked toml for git repo https://github.com/benglard/RustyNet written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/benglard/RustyNet already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8937173ec785f58619cf28e8ec05ab5041471b36916ad2e04e9987b1b8ead2cd
[INFO] running `"docker" "start" "-a" "8937173ec785f58619cf28e8ec05ab5041471b36916ad2e04e9987b1b8ead2cd"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling RustyNet v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(collections)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/utilities.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]  --> src/utilities.rs:6:14
[INFO] [stderr]   |
[INFO] [stderr] 6 |     for _ in (0 .. n) {
[INFO] [stderr]   |              ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/utilities.rs:14:14
[INFO] [stderr]    |
[INFO] [stderr] 14 |     for _ in (0 .. n) {
[INFO] [stderr]    |              ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/utilities.rs:22:14
[INFO] [stderr]    |
[INFO] [stderr] 22 |     for _ in (0 .. n) {
[INFO] [stderr]    |              ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/vol.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let n = (sx * sy * depth);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/vol.rs:67:20
[INFO] [stderr]    |
[INFO] [stderr] 67 |         for idx in (0 .. n) {
[INFO] [stderr]    |                    ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/vol.rs:75:20
[INFO] [stderr]    |
[INFO] [stderr] 75 |         for idx in (0 .. n) {
[INFO] [stderr]    |                    ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/vol.rs:82:20
[INFO] [stderr]    |
[INFO] [stderr] 82 |         for num in (0 .. self.w.len()) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/vol.rs:94:20
[INFO] [stderr]    |
[INFO] [stderr] 94 |         for idx in (0 .. n) {
[INFO] [stderr]    |                    ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `utilities`
[INFO] [stderr]  --> src/input_layer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use utilities;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/linear_layer.rs:24:18
[INFO] [stderr]    |
[INFO] [stderr] 24 |         for _ in (0 .. num_inputs) {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/linear_layer.rs:59:18
[INFO] [stderr]    |
[INFO] [stderr] 59 |         for i in (0 .. self.out_depth) {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/linear_layer.rs:63:22
[INFO] [stderr]    |
[INFO] [stderr] 63 |             for d in (0 .. self.num_inputs) {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/linear_layer.rs:80:18
[INFO] [stderr]    |
[INFO] [stderr] 80 |         for i in (0 .. self.out_depth) {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/linear_layer.rs:85:22
[INFO] [stderr]    |
[INFO] [stderr] 85 |             for d in (0 .. self.num_inputs) {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for struct `std::string::String` in the current scope
[INFO] [stderr]   --> src/input_layer.rs:22:41
[INFO] [stderr]    |
[INFO] [stderr] 22 |             layer_type: string::String::from_str("input"),
[INFO] [stderr]    |                                         ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]    = note: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]            `use std::str::FromStr;`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `from_str` found for struct `std::string::String` in the current scope
[INFO] [stderr]   --> src/linear_layer.rs:41:41
[INFO] [stderr]    |
[INFO] [stderr] 41 |             layer_type: string::String::from_str("linear"),
[INFO] [stderr]    |                                         ^^^^^^^^ function or associated item not found in `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]    = note: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]            `use std::str::FromStr;`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors; 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `RustyNet`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8937173ec785f58619cf28e8ec05ab5041471b36916ad2e04e9987b1b8ead2cd"`
[INFO] running `"docker" "rm" "-f" "8937173ec785f58619cf28e8ec05ab5041471b36916ad2e04e9987b1b8ead2cd"`
[INFO] [stdout] 8937173ec785f58619cf28e8ec05ab5041471b36916ad2e04e9987b1b8ead2cd