[INFO] fetching crate markovr 0.4.1...
[INFO] testing markovr-0.4.1 against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] extracting crate markovr 0.4.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate markovr 0.4.1
[INFO] finished tweaking crates.io crate markovr 0.4.1
[INFO] tweaked toml for crates.io crate markovr 0.4.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate markovr 0.4.1 on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate markovr 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26c8d7dc44ffcbee5fdb459ef4ccf83480ee0047126e48f05a18da0f7ce5ab78
[INFO] running `Command { std: "docker" "start" "-a" "26c8d7dc44ffcbee5fdb459ef4ccf83480ee0047126e48f05a18da0f7ce5ab78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26c8d7dc44ffcbee5fdb459ef4ccf83480ee0047126e48f05a18da0f7ce5ab78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26c8d7dc44ffcbee5fdb459ef4ccf83480ee0047126e48f05a18da0f7ce5ab78", kill_on_drop: false }`
[INFO] [stdout] 26c8d7dc44ffcbee5fdb459ef4ccf83480ee0047126e48f05a18da0f7ce5ab78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0ee37e0ea99e1f0a32c2e0f7f54a637491eca40b0a9a5f3f6cf4a7b13e1c593
[INFO] running `Command { std: "docker" "start" "-a" "a0ee37e0ea99e1f0a32c2e0f7f54a637491eca40b0a9a5f3f6cf4a7b13e1c593", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling markovr v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::convert::TryFrom`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:44:49
[INFO] [stdout]    |
[INFO] [stdout] 44 |           let opts: Vec<usize> = optional_elements
[INFO] [stdout]    |  _________________________________________________^
[INFO] [stdout] 45 | |             .clone()
[INFO] [stdout]    | |____________________^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[usize]` does not implement `Clone`, so calling `clone` on `&[usize]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:114:49
[INFO] [stdout]     |
[INFO] [stdout] 114 |         for partial_key in self.permute_key(view.clone().to_vec()) {
[INFO] [stdout]     |                                                 ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[T]` does not implement `Clone`, so calling `clone` on `&[T]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.68s
[INFO] running `Command { std: "docker" "inspect" "a0ee37e0ea99e1f0a32c2e0f7f54a637491eca40b0a9a5f3f6cf4a7b13e1c593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0ee37e0ea99e1f0a32c2e0f7f54a637491eca40b0a9a5f3f6cf4a7b13e1c593", kill_on_drop: false }`
[INFO] [stdout] a0ee37e0ea99e1f0a32c2e0f7f54a637491eca40b0a9a5f3f6cf4a7b13e1c593
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2a6c768bc4b364f672eb30b6c1d31edb9387a81a8927ef895e8393986dc822d
[INFO] running `Command { std: "docker" "start" "-a" "a2a6c768bc4b364f672eb30b6c1d31edb9387a81a8927ef895e8393986dc822d", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stdout] warning: unused import: `std::convert::TryFrom`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:44:49
[INFO] [stdout]    |
[INFO] [stdout] 44 |           let opts: Vec<usize> = optional_elements
[INFO] [stdout]    |  _________________________________________________^
[INFO] [stdout] 45 | |             .clone()
[INFO] [stdout]    | |____________________^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[usize]` does not implement `Clone`, so calling `clone` on `&[usize]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling markovr v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:114:49
[INFO] [stdout]     |
[INFO] [stdout] 114 |         for partial_key in self.permute_key(view.clone().to_vec()) {
[INFO] [stdout]     |                                                 ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[T]` does not implement `Clone`, so calling `clone` on `&[T]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryFrom`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:44:49
[INFO] [stdout]    |
[INFO] [stdout] 44 |           let opts: Vec<usize> = optional_elements
[INFO] [stdout]    |  _________________________________________________^
[INFO] [stdout] 45 | |             .clone()
[INFO] [stdout]    | |____________________^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[usize]` does not implement `Clone`, so calling `clone` on `&[usize]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:114:49
[INFO] [stdout]     |
[INFO] [stdout] 114 |         for partial_key in self.permute_key(view.clone().to_vec()) {
[INFO] [stdout]     |                                                 ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[T]` does not implement `Clone`, so calling `clone` on `&[T]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "a2a6c768bc4b364f672eb30b6c1d31edb9387a81a8927ef895e8393986dc822d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2a6c768bc4b364f672eb30b6c1d31edb9387a81a8927ef895e8393986dc822d", kill_on_drop: false }`
[INFO] [stdout] a2a6c768bc4b364f672eb30b6c1d31edb9387a81a8927ef895e8393986dc822d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cc7021e740f3c5be0d5ee2f5d68df939ce9f03dadfea69e86e3dca16b5409508
[INFO] running `Command { std: "docker" "start" "-a" "cc7021e740f3c5be0d5ee2f5d68df939ce9f03dadfea69e86e3dca16b5409508", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr] warning: unused import: `std::convert::TryFrom`
[INFO] [stderr]  --> src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::convert::TryFrom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]   --> src/lib.rs:44:49
[INFO] [stderr]    |
[INFO] [stderr] 44 |           let opts: Vec<usize> = optional_elements
[INFO] [stderr]    |  _________________________________________________^
[INFO] [stderr] 45 | |             .clone()
[INFO] [stderr]    | |____________________^ help: remove this redundant call
[INFO] [stderr]    |
[INFO] [stderr]    = note: the type `[usize]` does not implement `Clone`, so calling `clone` on `&[usize]` copies the reference, which does not do anything and can be removed
[INFO] [stderr]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/lib.rs:114:49
[INFO] [stderr]     |
[INFO] [stderr] 114 |         for partial_key in self.permute_key(view.clone().to_vec()) {
[INFO] [stderr]     |                                                 ^^^^^^^^ help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `[T]` does not implement `Clone`, so calling `clone` on `&[T]` copies the reference, which does not do anything and can be removed
[INFO] [stderr] 
[INFO] [stderr] warning: `markovr` (lib) generated 3 warnings (run `cargo fix --lib -p markovr` to apply 3 suggestions)
[INFO] [stderr] warning: `markovr` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/markovr-4218d6394579a03d)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test die::tests::coin ... ok
[INFO] [stdout] test die::tests::one_from_insertion ... ok
[INFO] [stdout] test die::tests::six_sided_die ... ok
[INFO] [stdout] test die::tests::get_prob ... ok
[INFO] [stdout] test tests::alphabet_second_order ... ok
[INFO] [stdout] test tests::empty ... ok
[INFO] [stdout] test tests::alphabet_first_order ... ok
[INFO] [stdout] test die::tests::empty ... ok
[INFO] [stdout] test die::tests::modified_weight ... ok
[INFO] [stderr]    Doc-tests markovr
[INFO] [stdout] test die::tests::coin_with_edge ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cc7021e740f3c5be0d5ee2f5d68df939ce9f03dadfea69e86e3dca16b5409508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc7021e740f3c5be0d5ee2f5d68df939ce9f03dadfea69e86e3dca16b5409508", kill_on_drop: false }`
[INFO] [stdout] cc7021e740f3c5be0d5ee2f5d68df939ce9f03dadfea69e86e3dca16b5409508
