[INFO] fetching crate vectrs 0.0.7...
[INFO] testing vectrs-0.0.7 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate vectrs 0.0.7 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate vectrs 0.0.7
[INFO] finished tweaking crates.io crate vectrs 0.0.7
[INFO] tweaked toml for crates.io crate vectrs 0.0.7 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vectrs 0.0.7 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 71 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.8.2)
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 484287c71810cf94efab8bf64a724db6956964110f882d74525b478d778825b9
[INFO] running `Command { std: "docker" "start" "-a" "484287c71810cf94efab8bf64a724db6956964110f882d74525b478d778825b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "484287c71810cf94efab8bf64a724db6956964110f882d74525b478d778825b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "484287c71810cf94efab8bf64a724db6956964110f882d74525b478d778825b9", kill_on_drop: false }`
[INFO] [stdout] 484287c71810cf94efab8bf64a724db6956964110f882d74525b478d778825b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac68ed7aa295b8a5145ccaeff1a4f6226a4c1b3504ebaa580a6e9e07114dbc75
[INFO] running `Command { std: "docker" "start" "-a" "ac68ed7aa295b8a5145ccaeff1a4f6226a4c1b3504ebaa580a6e9e07114dbc75", kill_on_drop: false }`
[INFO] [stderr]    Compiling vectrs v0.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `panic` is ambiguous
[INFO] [stdout]    --> src/lib.rs:385:21
[INFO] [stdout]     |
[INFO] [stdout] 385 |                     panic!("collect iterator of length {} into `Vector<_, {}>`", i, N);
[INFO] [stdout]     |                     ^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout] note: `panic` could refer to the macro imported here
[INFO] [stdout]    --> src/lib.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | use crate::prelude::*;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `panic` to disambiguate
[INFO] [stdout]     = help: or use `crate::panic` to refer to this macro unambiguously
[INFO] [stdout] note: `panic` could also refer to a macro from prelude
[INFO] [stdout]    --> /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/prelude/mod.rs:31:12
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #147319 <https://github.com/rust-lang/rust/issues/147319>
[INFO] [stdout]     = note: `#[warn(ambiguous_panic_imports)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "ac68ed7aa295b8a5145ccaeff1a4f6226a4c1b3504ebaa580a6e9e07114dbc75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac68ed7aa295b8a5145ccaeff1a4f6226a4c1b3504ebaa580a6e9e07114dbc75", kill_on_drop: false }`
[INFO] [stdout] ac68ed7aa295b8a5145ccaeff1a4f6226a4c1b3504ebaa580a6e9e07114dbc75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77bf58afb4b58f2c0a2de91695306555f2051ddde1aa0314f1fc7d232e05e324
[INFO] running `Command { std: "docker" "start" "-a" "77bf58afb4b58f2c0a2de91695306555f2051ddde1aa0314f1fc7d232e05e324", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling csv-core v0.1.13
[INFO] [stderr]    Compiling criterion-plot v0.4.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stdout] warning: `panic` is ambiguous
[INFO] [stdout]    --> src/lib.rs:385:21
[INFO] [stdout]     |
[INFO] [stdout] 385 |                     panic!("collect iterator of length {} into `Vector<_, {}>`", i, N);
[INFO] [stdout]     |                     ^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout] note: `panic` could refer to the macro imported here
[INFO] [stdout]    --> src/lib.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | use crate::prelude::*;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `panic` to disambiguate
[INFO] [stdout]     = help: or use `crate::panic` to refer to this macro unambiguously
[INFO] [stdout] note: `panic` could also refer to a macro from prelude
[INFO] [stdout]    --> /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/prelude/mod.rs:31:12
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #147319 <https://github.com/rust-lang/rust/issues/147319>
[INFO] [stdout]     = note: `#[warn(ambiguous_panic_imports)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling criterion v0.3.6
[INFO] [stderr]    Compiling vectrs v0.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `panic` is ambiguous
[INFO] [stdout]    --> src/lib.rs:385:21
[INFO] [stdout]     |
[INFO] [stdout] 385 |                     panic!("collect iterator of length {} into `Vector<_, {}>`", i, N);
[INFO] [stdout]     |                     ^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout] note: `panic` could refer to the macro imported here
[INFO] [stdout]    --> src/lib.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | use crate::prelude::*;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `panic` to disambiguate
[INFO] [stdout]     = help: or use `crate::panic` to refer to this macro unambiguously
[INFO] [stdout] note: `panic` could also refer to a macro from prelude
[INFO] [stdout]    --> /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/prelude/mod.rs:31:12
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #147319 <https://github.com/rust-lang/rust/issues/147319>
[INFO] [stdout]     = note: `#[warn(ambiguous_panic_imports)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 37.36s
[INFO] running `Command { std: "docker" "inspect" "77bf58afb4b58f2c0a2de91695306555f2051ddde1aa0314f1fc7d232e05e324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77bf58afb4b58f2c0a2de91695306555f2051ddde1aa0314f1fc7d232e05e324", kill_on_drop: false }`
[INFO] [stdout] 77bf58afb4b58f2c0a2de91695306555f2051ddde1aa0314f1fc7d232e05e324
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f5054c095bc9529b21166a2706d9a3d98bca405a55257801af17cf3bad092afc
[INFO] running `Command { std: "docker" "start" "-a" "f5054c095bc9529b21166a2706d9a3d98bca405a55257801af17cf3bad092afc", kill_on_drop: false }`
[INFO] [stderr] warning: `panic` is ambiguous
[INFO] [stderr]    --> src/lib.rs:385:21
[INFO] [stderr]     |
[INFO] [stderr] 385 |                     panic!("collect iterator of length {} into `Vector<_, {}>`", i, N);
[INFO] [stderr]     |                     ^^^^^ ambiguous name
[INFO] [stderr]     |
[INFO] [stderr]     = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stderr] note: `panic` could refer to the macro imported here
[INFO] [stderr]    --> src/lib.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 | use crate::prelude::*;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: consider adding an explicit import of `panic` to disambiguate
[INFO] [stderr]     = help: or use `crate::panic` to refer to this macro unambiguously
[INFO] [stderr] note: `panic` could also refer to a macro from prelude
[INFO] [stderr]    --> /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/prelude/mod.rs:31:12
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #147319 <https://github.com/rust-lang/rust/issues/147319>
[INFO] [stderr]     = note: `#[warn(ambiguous_panic_imports)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `vectrs` (lib) generated 1 warning
[INFO] [stderr] warning: `vectrs` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/vectrs-59e836221bf95b12)
[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] [stderr]    Doc-tests vectrs
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/lib.rs - (line 30) ... ok
[INFO] [stdout] test src/lib.rs - (line 85) ... ok
[INFO] [stdout] test src/lib.rs - (line 38) ... ok
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] test src/lib.rs - (line 107) ... ok
[INFO] [stdout] test src/lib.rs - (line 52) ... ok
[INFO] [stdout] test src/lib.rs - (line 68) ... ok
[INFO] [stdout] test src/lib.rs - (line 118) ... ok
[INFO] [stdout] test src/lib.rs - IntoIter (line 300) ... ok
[INFO] [stdout] test src/lib.rs - (line 95) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.10s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f5054c095bc9529b21166a2706d9a3d98bca405a55257801af17cf3bad092afc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5054c095bc9529b21166a2706d9a3d98bca405a55257801af17cf3bad092afc", kill_on_drop: false }`
[INFO] [stdout] f5054c095bc9529b21166a2706d9a3d98bca405a55257801af17cf3bad092afc