[INFO] fetching crate rand-mersenne-twister 0.1.0...
[INFO] testing rand-mersenne-twister-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate rand-mersenne-twister 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rand-mersenne-twister 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rand-mersenne-twister 0.1.0
[INFO] finished tweaking crates.io crate rand-mersenne-twister 0.1.0
[INFO] tweaked toml for crates.io crate rand-mersenne-twister 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2a4715938858f19886f55df13a811641d19e31d90f721aa8713744ff1cb312a
[INFO] running `Command { std: "docker" "start" "-a" "e2a4715938858f19886f55df13a811641d19e31d90f721aa8713744ff1cb312a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2a4715938858f19886f55df13a811641d19e31d90f721aa8713744ff1cb312a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2a4715938858f19886f55df13a811641d19e31d90f721aa8713744ff1cb312a", kill_on_drop: false }`
[INFO] [stdout] e2a4715938858f19886f55df13a811641d19e31d90f721aa8713744ff1cb312a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a009d974bcad7b285eb17370e5e1a1af6cc3a121b1a4ba68f4bfb2c83b4f23d
[INFO] running `Command { std: "docker" "start" "-a" "1a009d974bcad7b285eb17370e5e1a1af6cc3a121b1a4ba68f4bfb2c83b4f23d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand-mersenne-twister v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0407]: method `next_u32` is not a member of trait `Rng`
[INFO] [stdout]    --> src/mt32.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 | /     fn next_u32(&mut self) -> u32 {
[INFO] [stdout] 147 | |         self.next()
[INFO] [stdout] 148 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `reseed` is not a member of trait `SeedableRng`
[INFO] [stdout]    --> src/mt32.rs:152:5
[INFO] [stdout]     |
[INFO] [stdout] 152 | /     fn reseed(&mut self, seed: u32) {
[INFO] [stdout] 153 | |         self.reset(seed);
[INFO] [stdout] 154 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `SeedableRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `reseed` is not a member of trait `SeedableRng`
[INFO] [stdout]    --> src/mt32.rs:162:5
[INFO] [stdout]     |
[INFO] [stdout] 162 | /     fn reseed(&mut self, seed: &'a [u32]) {
[INFO] [stdout] 163 | |         self.reset_array(seed);
[INFO] [stdout] 164 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `SeedableRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `next_u32` is not a member of trait `Rng`
[INFO] [stdout]    --> src/mt64.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 | /     fn next_u32(&mut self) -> u32 {
[INFO] [stdout] 147 | |         self.next() as u32
[INFO] [stdout] 148 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `next_u64` is not a member of trait `Rng`
[INFO] [stdout]    --> src/mt64.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 | /     fn next_u64(&mut self) -> u64 {
[INFO] [stdout] 151 | |         self.next()
[INFO] [stdout] 152 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `reseed` is not a member of trait `SeedableRng`
[INFO] [stdout]    --> src/mt64.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 156 | /     fn reseed(&mut self, seed: u64) {
[INFO] [stdout] 157 | |         self.reset(seed);
[INFO] [stdout] 158 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `SeedableRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `reseed` is not a member of trait `SeedableRng`
[INFO] [stdout]    --> src/mt64.rs:166:5
[INFO] [stdout]     |
[INFO] [stdout] 166 | /     fn reseed(&mut self, seed: &'a [u64]) {
[INFO] [stdout] 167 | |         self.reset_array(seed);
[INFO] [stdout] 168 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `SeedableRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/mt32.rs:55:22
[INFO] [stdout]    |
[INFO] [stdout] 55 |         for index in (1..N) {
[INFO] [stdout]    |                      ^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/mt32.rs:71:18
[INFO] [stdout]    |
[INFO] [stdout] 71 |         for _ in (0..size) {
[INFO] [stdout]    |                  ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/mt32.rs:88:18
[INFO] [stdout]    |
[INFO] [stdout] 88 |         for _ in (0..N - 1) {
[INFO] [stdout]    |                  ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/mt64.rs:56:22
[INFO] [stdout]    |
[INFO] [stdout] 56 |         for index in (1..N) {
[INFO] [stdout]    |                      ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/mt64.rs:71:18
[INFO] [stdout]    |
[INFO] [stdout] 71 |         for _ in (0..size) {
[INFO] [stdout]    |                  ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/mt64.rs:88:18
[INFO] [stdout]    |
[INFO] [stdout] 88 |         for _ in (0..N - 1) {
[INFO] [stdout]    |                  ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this trait takes 0 generic arguments but 1 generic argument was supplied
[INFO] [stdout]    --> src/mt32.rs:151:6
[INFO] [stdout]     |
[INFO] [stdout] 151 | impl SeedableRng<u32> for MTRng32 {
[INFO] [stdout]     |      ^^^^^^^^^^^----- help: remove these generics
[INFO] [stdout]     |      |
[INFO] [stdout]     |      expected 0 generic arguments
[INFO] [stdout]     |
[INFO] [stdout] note: trait defined here, with 0 generic parameters
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand_core-0.6.3/src/lib.rs:217:11
[INFO] [stdout]     |
[INFO] [stdout] 217 | pub trait SeedableRng: Sized {
[INFO] [stdout]     |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this trait takes 0 generic arguments but 1 generic argument was supplied
[INFO] [stdout]    --> src/mt32.rs:161:10
[INFO] [stdout]     |
[INFO] [stdout] 161 | impl<'a> SeedableRng<&'a [u32]> for MTRng32 {
[INFO] [stdout]     |          ^^^^^^^^^^^----------- help: remove these generics
[INFO] [stdout]     |          |
[INFO] [stdout]     |          expected 0 generic arguments
[INFO] [stdout]     |
[INFO] [stdout] note: trait defined here, with 0 generic parameters
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand_core-0.6.3/src/lib.rs:217:11
[INFO] [stdout]     |
[INFO] [stdout] 217 | pub trait SeedableRng: Sized {
[INFO] [stdout]     |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this trait takes 0 generic arguments but 1 generic argument was supplied
[INFO] [stdout]    --> src/mt64.rs:155:6
[INFO] [stdout]     |
[INFO] [stdout] 155 | impl SeedableRng<u64> for MTRng64 {
[INFO] [stdout]     |      ^^^^^^^^^^^----- help: remove these generics
[INFO] [stdout]     |      |
[INFO] [stdout]     |      expected 0 generic arguments
[INFO] [stdout]     |
[INFO] [stdout] note: trait defined here, with 0 generic parameters
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand_core-0.6.3/src/lib.rs:217:11
[INFO] [stdout]     |
[INFO] [stdout] 217 | pub trait SeedableRng: Sized {
[INFO] [stdout]     |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this trait takes 0 generic arguments but 1 generic argument was supplied
[INFO] [stdout]    --> src/mt64.rs:165:10
[INFO] [stdout]     |
[INFO] [stdout] 165 | impl<'a> SeedableRng<&'a [u64]> for MTRng64 {
[INFO] [stdout]     |          ^^^^^^^^^^^----------- help: remove these generics
[INFO] [stdout]     |          |
[INFO] [stdout]     |          expected 0 generic arguments
[INFO] [stdout]     |
[INFO] [stdout] note: trait defined here, with 0 generic parameters
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand_core-0.6.3/src/lib.rs:217:11
[INFO] [stdout]     |
[INFO] [stdout] 217 | pub trait SeedableRng: Sized {
[INFO] [stdout]     |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0119]: conflicting implementations of trait `rand::SeedableRng` for type `mt32::MTRng32`
[INFO] [stdout]    --> src/mt32.rs:161:1
[INFO] [stdout]     |
[INFO] [stdout] 151 | impl SeedableRng<u32> for MTRng32 {
[INFO] [stdout]     | --------------------------------- first implementation here
[INFO] [stdout] ...
[INFO] [stdout] 161 | impl<'a> SeedableRng<&'a [u32]> for MTRng32 {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `mt32::MTRng32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0119]: conflicting implementations of trait `rand::SeedableRng` for type `mt64::MTRng64`
[INFO] [stdout]    --> src/mt64.rs:165:1
[INFO] [stdout]     |
[INFO] [stdout] 155 | impl SeedableRng<u64> for MTRng64 {
[INFO] [stdout]     | --------------------------------- first implementation here
[INFO] [stdout] ...
[INFO] [stdout] 165 | impl<'a> SeedableRng<&'a [u64]> for MTRng64 {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `mt64::MTRng64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0107, E0119, E0407, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0107`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rand-mersenne-twister` due to 15 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1a009d974bcad7b285eb17370e5e1a1af6cc3a121b1a4ba68f4bfb2c83b4f23d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a009d974bcad7b285eb17370e5e1a1af6cc3a121b1a4ba68f4bfb2c83b4f23d", kill_on_drop: false }`
[INFO] [stdout] 1a009d974bcad7b285eb17370e5e1a1af6cc3a121b1a4ba68f4bfb2c83b4f23d
