[INFO] fetching crate narrow 0.15.1...
[INFO] checking narrow-0.15.1 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-150727
[INFO] extracting crate narrow 0.15.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate narrow 0.15.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate narrow 0.15.1
[INFO] tweaked toml for crates.io crate narrow 0.15.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate narrow 0.15.1 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate narrow 0.15.1 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows-core v0.51.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ebb3891d1441cf0902b8e586bdc3f23f2cc2294edbe1ab3dc8b8524a7b884a2
[INFO] running `Command { std: "docker" "start" "-a" "7ebb3891d1441cf0902b8e586bdc3f23f2cc2294edbe1ab3dc8b8524a7b884a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ebb3891d1441cf0902b8e586bdc3f23f2cc2294edbe1ab3dc8b8524a7b884a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ebb3891d1441cf0902b8e586bdc3f23f2cc2294edbe1ab3dc8b8524a7b884a2", kill_on_drop: false }`
[INFO] [stdout] 7ebb3891d1441cf0902b8e586bdc3f23f2cc2294edbe1ab3dc8b8524a7b884a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4b4b5e3fcf623203cb43609f1cd8c9ea8125a4ad0155c0236aceb31a79a6a72
[INFO] running `Command { std: "docker" "start" "-a" "d4b4b5e3fcf623203cb43609f1cd8c9ea8125a4ad0155c0236aceb31a79a6a72", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling semver v1.0.20
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[INFO] [stderr]    Compiling serde_core v1.0.225
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[INFO] [stderr]     Checking zerocopy v0.7.31
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[INFO] [stderr]    Compiling serde_derive v1.0.225
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]     Checking regex v1.10.2
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[INFO] [stderr]     Checking comfy-table v7.1.2
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[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/buffer.rs:392:19
[INFO] [stdout]     |
[INFO] [stdout] 392 |         slice_mut.as_mut_slice()[0] = 1234;
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `buffer::BufferMut::as_mut_slice(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(str_as_str)]` to the crate attributes to enable `core::slice::<impl [T]>::as_mut_slice`
[INFO] [stdout]    --> src/lib.rs:62:1
[INFO] [stdout]     |
[INFO] [stdout]  62 + #![feature(str_as_str)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/buffer.rs:393:19
[INFO] [stdout]     |
[INFO] [stdout] 393 |         slice_mut.as_mut_slice()[1] = 4321;
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `buffer::BufferMut::as_mut_slice(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(str_as_str)]` to the crate attributes to enable `core::slice::<impl [T]>::as_mut_slice`
[INFO] [stdout]    --> src/lib.rs:62:1
[INFO] [stdout]     |
[INFO] [stdout]  62 + #![feature(str_as_str)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/buffer.rs:403:25
[INFO] [stdout]     |
[INFO] [stdout] 403 |         slice_array_mut.as_mut_slice()[0] = 0;
[INFO] [stdout]     |                         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `buffer::BufferMut::as_mut_slice(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(str_as_str)]` to the crate attributes to enable `core::slice::<impl [T]>::as_mut_slice`
[INFO] [stdout]    --> src/lib.rs:62:1
[INFO] [stdout]     |
[INFO] [stdout]  62 + #![feature(str_as_str)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.76s
[INFO] running `Command { std: "docker" "inspect" "d4b4b5e3fcf623203cb43609f1cd8c9ea8125a4ad0155c0236aceb31a79a6a72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4b4b5e3fcf623203cb43609f1cd8c9ea8125a4ad0155c0236aceb31a79a6a72", kill_on_drop: false }`
[INFO] [stdout] d4b4b5e3fcf623203cb43609f1cd8c9ea8125a4ad0155c0236aceb31a79a6a72
