[INFO] fetching crate permoot 0.2.1...
[INFO] testing permoot-0.2.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate permoot 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate permoot 0.2.1
[INFO] finished tweaking crates.io crate permoot 0.2.1
[INFO] tweaked toml for crates.io crate permoot 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate permoot 0.2.1 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_chacha v0.3.1 (available: v0.9.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c0b109dad191d6cfe2fd02450b1e5313cd9cda7ed6a2a9fdcd9ac105d9735bc
[INFO] running `Command { std: "docker" "start" "-a" "2c0b109dad191d6cfe2fd02450b1e5313cd9cda7ed6a2a9fdcd9ac105d9735bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c0b109dad191d6cfe2fd02450b1e5313cd9cda7ed6a2a9fdcd9ac105d9735bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c0b109dad191d6cfe2fd02450b1e5313cd9cda7ed6a2a9fdcd9ac105d9735bc", kill_on_drop: false }`
[INFO] [stdout] 2c0b109dad191d6cfe2fd02450b1e5313cd9cda7ed6a2a9fdcd9ac105d9735bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e5a1b822d17bfaf58bdefe08fb363ed4bf04bf995c2894f2a1420570212945b
[INFO] running `Command { std: "docker" "start" "-a" "9e5a1b822d17bfaf58bdefe08fb363ed4bf04bf995c2894f2a1420570212945b", kill_on_drop: false }`
[INFO] [stderr]    Compiling permoot v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_channel`
[INFO] [stdout]  --> src/lib.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(all(doc, rustc_channel = "nightly"), feature(doc_auto_cfg))]
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_channel, values("nightly"))'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_channel, values(\"nightly\"))");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn cycle_iter(sl: &[usize]) -> CycleIter {
[INFO] [stdout]    |                       ^^^^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn cycle_iter(sl: &[usize]) -> CycleIter<'_> {
[INFO] [stdout]    |                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "9e5a1b822d17bfaf58bdefe08fb363ed4bf04bf995c2894f2a1420570212945b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e5a1b822d17bfaf58bdefe08fb363ed4bf04bf995c2894f2a1420570212945b", kill_on_drop: false }`
[INFO] [stdout] 9e5a1b822d17bfaf58bdefe08fb363ed4bf04bf995c2894f2a1420570212945b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c9263b075a8cbf4f6d4be9c416bd87aca63d66890f8838ce24b3bb21fd5559b
[INFO] running `Command { std: "docker" "start" "-a" "4c9263b075a8cbf4f6d4be9c416bd87aca63d66890f8838ce24b3bb21fd5559b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_channel`
[INFO] [stdout]  --> src/lib.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(all(doc, rustc_channel = "nightly"), feature(doc_auto_cfg))]
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_channel, values("nightly"))'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_channel, values(\"nightly\"))");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn cycle_iter(sl: &[usize]) -> CycleIter {
[INFO] [stdout]    |                       ^^^^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn cycle_iter(sl: &[usize]) -> CycleIter<'_> {
[INFO] [stdout]    |                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling permoot v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `rand`
[INFO] [stdout]   --> src/util.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 48 |     use rand::{Rng, SeedableRng};
[INFO] [stdout]    |         ^^^^ use of unresolved module or unlinked crate `rand`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `rand`, use `cargo add rand` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `vec` in this scope
[INFO] [stdout]   --> src/util.rs:53:18
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut seeds = vec![0; n_seeds];
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_channel`
[INFO] [stdout]  --> src/lib.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(all(doc, rustc_channel = "nightly"), feature(doc_auto_cfg))]
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_channel, values("nightly"))'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_channel, values(\"nightly\"))");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `seed_from_u64` found for struct `ChaCha8Rng` in the current scope
[INFO] [stdout]   --> src/util.rs:51:33
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut seed_rng = ChaCha8Rng::seed_from_u64(0xC418);
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^ function or associated item not found in `ChaCha8Rng`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `SeedableRng` which provides `seed_from_u64` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout]  1 + use rand_chacha::rand_core::SeedableRng;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `seed_from_u64` found for struct `ChaCha8Rng` in the current scope
[INFO] [stdout]   --> src/util.rs:57:29
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let mut rng = ChaCha8Rng::seed_from_u64(seed);
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^ function or associated item not found in `ChaCha8Rng`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `SeedableRng` which provides `seed_from_u64` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout]  1 + use rand_chacha::rand_core::SeedableRng;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `permoot` (lib test) due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "4c9263b075a8cbf4f6d4be9c416bd87aca63d66890f8838ce24b3bb21fd5559b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c9263b075a8cbf4f6d4be9c416bd87aca63d66890f8838ce24b3bb21fd5559b", kill_on_drop: false }`
[INFO] [stdout] 4c9263b075a8cbf4f6d4be9c416bd87aca63d66890f8838ce24b3bb21fd5559b
