[INFO] updating cached repository https://github.com/unintended/hackerrank-rust
[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] 43b491dd630c4a386ec10108522f47be9198e6cf
[INFO] checking unintended/hackerrank-rust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funintended%2Fhackerrank-rust" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unintended/hackerrank-rust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/unintended/hackerrank-rust
[INFO] finished tweaking git repo https://github.com/unintended/hackerrank-rust
[INFO] tweaked toml for git repo https://github.com/unintended/hackerrank-rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/unintended/hackerrank-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-3/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[INFO] the lockfile is outdated, regenerating it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" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9b6eb174ba548951a9c244fbff43b166f1a89bffb3597776bf171bbd466425ad
[INFO] running `"docker" "start" "-a" "9b6eb174ba548951a9c244fbff43b166f1a89bffb3597776bf171bbd466425ad"`
[INFO] [stderr]     Checking itertools v0.0.19
[INFO] [stderr] error: can't qualify macro_rules invocation with `pub`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/lib.rs:89:1
[INFO] [stderr]    |
[INFO] [stderr] 89 | pub macro_rules! iproduct {
[INFO] [stderr]    | ^^^ help: try exporting the macro: `#[macro_export]`
[INFO] [stderr] 
[INFO] [stderr] error: can't qualify macro_rules invocation with `pub`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/lib.rs:133:1
[INFO] [stderr]     |
[INFO] [stderr] 133 | pub macro_rules! izip {
[INFO] [stderr]     | ^^^ help: try exporting the macro: `#[macro_export]`
[INFO] [stderr] 
[INFO] [stderr] error: can't qualify macro_rules invocation with `pub`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/lib.rs:171:1
[INFO] [stderr]     |
[INFO] [stderr] 171 | pub macro_rules! icompr {
[INFO] [stderr]     | ^^^ help: try exporting the macro: `#[macro_export]`
[INFO] [stderr] 
[INFO] [stderr] error: invalid suffix `us` for integer literal
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/lib.rs:435:25
[INFO] [stderr]     |
[INFO] [stderr] 435 |         let mut index = 0us;
[INFO] [stderr]     |                         ^^^ invalid suffix `us`
[INFO] [stderr]     |
[INFO] [stderr]     = help: the suffix must be one of the integral types (`u32`, `isize`, etc)
[INFO] [stderr] 
[INFO] [stderr] error: expected parameter name, found `:`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/adaptors.rs:411:21
[INFO] [stderr]     |
[INFO] [stderr] 411 |         let div = |&: x: usize| {
[INFO] [stderr]     |                     ^ expected parameter name
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/zip.rs:100:1
[INFO] [stderr]     |
[INFO] [stderr] 100 | #[unstable = "trait is unstable"]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::Int`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/adaptors.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::num::Int;
[INFO] [stderr]   |     ^^^^^^^^^^^^^ no `Int` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::Int`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/intersperse.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::num::Int;
[INFO] [stderr]   |     ^^^^^^^^^^^^^ no `Int` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved imports `std::num::Float`, `std::num::NumCast`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/linspace.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::num::{Float, NumCast};
[INFO] [stderr]   |                ^^^^^  ^^^^^^^ no `NumCast` in `num`
[INFO] [stderr]   |                |
[INFO] [stderr]   |                no `Float` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::ops::FullRange`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/misc.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     FullRange,
[INFO] [stderr]   |     ^^^^^^^^^ no `FullRange` in `ops`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::collections::RingBuf`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/tee.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::RingBuf;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ no `RingBuf` in `collections`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::Int`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/tee.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::num::Int;
[INFO] [stderr]   |     ^^^^^^^^^^^^^ no `Int` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::iter::RandomAccessIterator`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/zip.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::iter::RandomAccessIterator;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `RandomAccessIterator` in `iter`
[INFO] [stderr] 
[INFO] [stderr] error: cannot find attribute `old_impl_check` in this scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/adaptors.rs:291:3
[INFO] [stderr]     |
[INFO] [stderr] 291 | #[old_impl_check]
[INFO] [stderr]     |   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find derive macro `Show` in this scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/zip.rs:108:32
[INFO] [stderr]     |
[INFO] [stderr] 108 | #[derive(Clone, PartialEq, Eq, Show)]
[INFO] [stderr]     |                                ^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0437]: type `Output` is not a member of trait `IndexMut`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:259:5
[INFO] [stderr]     |
[INFO] [stderr] 259 |     type Output = A;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^ not a member of trait `IndexMut`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Counter` in module `iter`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/linspace.rs:8:41
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub type Linspace<F> = iter::Take<iter::Counter<F>>;
[INFO] [stderr]   |                                         ^^^^^^^ not found in `iter`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `count` in module `iter`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/linspace.rs:27:15
[INFO] [stderr]    |
[INFO] [stderr] 27 |         iter::count(a, step).take(n)
[INFO] [stderr]    |               ^^^^^ not found in `iter`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `count` in module `iter`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/linspace.rs:29:15
[INFO] [stderr]    |
[INFO] [stderr] 29 |         iter::count(a, Float::one()).take(n)
[INFO] [stderr]    |               ^^^^^ not found in `iter`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ContravariantLifetime` in module `marker`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 |     life: marker::ContravariantLifetime<'a>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^ not found in `marker`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ContravariantLifetime` in module `marker`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:39:19
[INFO] [stderr]    |
[INFO] [stderr] 39 |     life: marker::ContravariantLifetime<'a>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^ not found in `marker`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `NoCopy` in module `marker`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:40:21
[INFO] [stderr]     |
[INFO] [stderr] 40  |       nocopy: marker::NoCopy
[INFO] [stderr]     |                       ^^^^^^ help: a trait with a similar name exists: `Copy`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `ContravariantLifetime` in module `marker`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:53:27
[INFO] [stderr]    |
[INFO] [stderr] 53 |             life: marker::ContravariantLifetime,
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^ not found in `marker`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `ContravariantLifetime` in module `marker`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:68:27
[INFO] [stderr]    |
[INFO] [stderr] 68 |             life: marker::ContravariantLifetime,
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^ not found in `marker`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `NoCopy` in module `marker`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:69:29
[INFO] [stderr]    |
[INFO] [stderr] 69 |             nocopy: marker::NoCopy,
[INFO] [stderr]    |                             ^^^^^^ not found in `marker`
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Show` in module `fmt`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:229:37
[INFO] [stderr]     |
[INFO] [stderr] 229 |         impl<'a, A: fmt::Show> fmt::Show for $name<'a, A>
[INFO] [stderr]     |                                     ^^^^ not found in `fmt`
[INFO] [stderr] ...
[INFO] [stderr] 246 | stride_impl!{struct Stride -> &'a [A], as_ptr, *const A, &'a A}
[INFO] [stderr]     | --------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Show` in module `fmt`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:229:26
[INFO] [stderr]     |
[INFO] [stderr] 229 |         impl<'a, A: fmt::Show> fmt::Show for $name<'a, A>
[INFO] [stderr]     |                          ^^^^ not found in `fmt`
[INFO] [stderr] ...
[INFO] [stderr] 246 | stride_impl!{struct Stride -> &'a [A], as_ptr, *const A, &'a A}
[INFO] [stderr]     | --------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `range` in this scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:234:26
[INFO] [stderr]     |
[INFO] [stderr] 234 |                 for i in range(0, self.len()) {
[INFO] [stderr]     |                          ^^^^^ not found in this scope
[INFO] [stderr] ...
[INFO] [stderr] 246 | stride_impl!{struct Stride -> &'a [A], as_ptr, *const A, &'a A}
[INFO] [stderr]     | --------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Show` in module `fmt`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:229:37
[INFO] [stderr]     |
[INFO] [stderr] 229 |         impl<'a, A: fmt::Show> fmt::Show for $name<'a, A>
[INFO] [stderr]     |                                     ^^^^ not found in `fmt`
[INFO] [stderr] ...
[INFO] [stderr] 247 | stride_impl!{struct StrideMut -> &'a mut [A], as_mut_ptr, *mut A, &'a mut A}
[INFO] [stderr]     | ---------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Show` in module `fmt`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:229:26
[INFO] [stderr]     |
[INFO] [stderr] 229 |         impl<'a, A: fmt::Show> fmt::Show for $name<'a, A>
[INFO] [stderr]     |                          ^^^^ not found in `fmt`
[INFO] [stderr] ...
[INFO] [stderr] 247 | stride_impl!{struct StrideMut -> &'a mut [A], as_mut_ptr, *mut A, &'a mut A}
[INFO] [stderr]     | ---------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `range` in this scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/stride.rs:234:26
[INFO] [stderr]     |
[INFO] [stderr] 234 |                 for i in range(0, self.len()) {
[INFO] [stderr]     |                          ^^^^^ not found in this scope
[INFO] [stderr] ...
[INFO] [stderr] 247 | stride_impl!{struct StrideMut -> &'a mut [A], as_mut_ptr, *mut A, &'a mut A}
[INFO] [stderr]     | ---------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/zip.rs:100:1
[INFO] [stderr]     |
[INFO] [stderr] 100 | #[unstable = "trait is unstable"]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0107]: wrong number of type arguments: expected 1, found 2
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/adaptors.rs:427:20
[INFO] [stderr]     |
[INFO] [stderr] 427 |     a: Peekable<T, A>,
[INFO] [stderr]     |                    ^ unexpected type argument
[INFO] [stderr] 
[INFO] [stderr] error[E0107]: wrong number of type arguments: expected 1, found 2
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/itertools-0.0.19/src/adaptors.rs:428:20
[INFO] [stderr]     |
[INFO] [stderr] 428 |     b: Peekable<T, B>,
[INFO] [stderr]     |                    ^ unexpected type argument
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 34 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0107, E0405, E0412, E0425, E0432, E0437, E0734.
[INFO] [stderr] For more information about an error, try `rustc --explain E0107`.
[INFO] [stderr] error: could not compile `itertools`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9b6eb174ba548951a9c244fbff43b166f1a89bffb3597776bf171bbd466425ad"`
[INFO] running `"docker" "rm" "-f" "9b6eb174ba548951a9c244fbff43b166f1a89bffb3597776bf171bbd466425ad"`
[INFO] [stdout] 9b6eb174ba548951a9c244fbff43b166f1a89bffb3597776bf171bbd466425ad