[INFO] fetching crate cowstr 1.3.0...
[INFO] checking cowstr-1.3.0 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate cowstr 1.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate cowstr 1.3.0
[INFO] finished tweaking crates.io crate cowstr 1.3.0
[INFO] tweaked toml for crates.io crate cowstr 1.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cowstr 1.3.0 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding code-product v0.3.0 (available: v0.4.2)
[INFO] [stderr]       Adding constptr v0.2.0 (available: v0.3.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded code-product-macro v0.3.0
[INFO] [stderr]   Downloaded code-product-lib v0.3.0
[INFO] [stderr]   Downloaded code-product v0.3.0
[INFO] [stderr]   Downloaded constptr v0.2.0
[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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cbce9da4acde0ab32b51bc3c84eef7e01fa8f04faa8f5f32615ef505f14f230
[INFO] running `Command { std: "docker" "start" "-a" "5cbce9da4acde0ab32b51bc3c84eef7e01fa8f04faa8f5f32615ef505f14f230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cbce9da4acde0ab32b51bc3c84eef7e01fa8f04faa8f5f32615ef505f14f230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cbce9da4acde0ab32b51bc3c84eef7e01fa8f04faa8f5f32615ef505f14f230", kill_on_drop: false }`
[INFO] [stdout] 5cbce9da4acde0ab32b51bc3c84eef7e01fa8f04faa8f5f32615ef505f14f230
[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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7400787d66d44fa93550eb54ab2a9cb5bc8dfab7f74594b263cee4307e04f13
[INFO] running `Command { std: "docker" "start" "-a" "e7400787d66d44fa93550eb54ab2a9cb5bc8dfab7f74594b263cee4307e04f13", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]     Checking unicode-ident v1.0.22
[INFO] [stderr]     Checking constptr v0.2.0
[INFO] [stderr]    Compiling mutants v0.0.3
[INFO] [stderr]    Compiling code-product-lib v0.3.0
[INFO] [stderr]    Compiling code-product-macro v0.3.0
[INFO] [stderr]     Checking code-product v0.3.0
[INFO] [stderr]     Checking cowstr v1.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `NotSend` is never constructed
[INFO] [stdout]     --> src/cowstr.rs:1836:8
[INFO] [stdout]      |
[INFO] [stdout] 1836 | struct NotSend(std::marker::PhantomData<*const ()>);
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `nightly_assert_matches`
[INFO] [stdout]  --> tests/substr.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "nightly_assert_matches", feature(assert_matches))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `default`, `nightly`, `nightly_extend_one`, `nightly_fmt_internals`, `nightly_int_roundings`, and `serde`
[INFO] [stdout]   = help: consider adding `nightly_assert_matches` as a feature in `Cargo.toml`
[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: unexpected `cfg` condition value: `nightly_assert_matches`
[INFO] [stdout]  --> tests/substr.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[cfg(feature = "nightly_assert_matches")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `default`, `nightly`, `nightly_extend_one`, `nightly_fmt_internals`, `nightly_int_roundings`, and `serde`
[INFO] [stdout]   = help: consider adding `nightly_assert_matches` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for the crate
[INFO] [stdout]    --> tests/substr.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 | / #![cfg_attr(feature = "nightly_assert_matches", feature(assert_matches))]
[INFO] [stdout]   2 | |
[INFO] [stdout]   3 | | #[cfg(feature = "nightly_assert_matches")]
[INFO] [stdout]   4 | | use std::assert_matches::assert_matches;
[INFO] [stdout] ...   |
[INFO] [stdout] 866 | |     assert_eq!(s.as_bytes()[9], b'd');
[INFO] [stdout] 867 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-W missing-docs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `nightly_assert_matches`
[INFO] [stdout]  --> tests/cowstr.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "nightly_assert_matches", feature(assert_matches))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `default`, `nightly`, `nightly_extend_one`, `nightly_fmt_internals`, `nightly_int_roundings`, and `serde`
[INFO] [stdout]   = help: consider adding `nightly_assert_matches` as a feature in `Cargo.toml`
[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: unexpected `cfg` condition value: `nightly_assert_matches`
[INFO] [stdout]  --> tests/cowstr.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[cfg(feature = "nightly_assert_matches")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `default`, `nightly`, `nightly_extend_one`, `nightly_fmt_internals`, `nightly_int_roundings`, and `serde`
[INFO] [stdout]   = help: consider adding `nightly_assert_matches` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for the crate
[INFO] [stdout]   --> tests/substr_threads.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 | / use std::thread;
[INFO] [stdout]  2 | |
[INFO] [stdout]  3 | | use cowstr::*;
[INFO] [stdout] ...  |
[INFO] [stdout] 13 | |     thread.join().expect("success");
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-W missing-docs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for the crate
[INFO] [stdout]   --> tests/cowstr_threads.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 | / use std::thread;
[INFO] [stdout]  2 | |
[INFO] [stdout]  3 | | use cowstr::*;
[INFO] [stdout] ...  |
[INFO] [stdout] 55 | |     assert!(thread.join().is_ok());
[INFO] [stdout] 56 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-W missing-docs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotSend` is never constructed
[INFO] [stdout]     --> src/cowstr.rs:1836:8
[INFO] [stdout]      |
[INFO] [stdout] 1836 | struct NotSend(std::marker::PhantomData<*const ()>);
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for the crate
[INFO] [stdout]    --> tests/cowstr.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 | / #![allow(clippy::should_panic_without_expect)]
[INFO] [stdout]   2 | | #![cfg_attr(feature = "nightly_assert_matches", feature(assert_matches))]
[INFO] [stdout]   3 | |
[INFO] [stdout]   4 | | #[cfg(feature = "nightly_assert_matches")]
[INFO] [stdout] ...   |
[INFO] [stdout] 875 | |     assert_eq!(s.as_bytes()[9], b'd');
[INFO] [stdout] 876 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-W missing-docs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.31s
[INFO] running `Command { std: "docker" "inspect" "e7400787d66d44fa93550eb54ab2a9cb5bc8dfab7f74594b263cee4307e04f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7400787d66d44fa93550eb54ab2a9cb5bc8dfab7f74594b263cee4307e04f13", kill_on_drop: false }`
[INFO] [stdout] e7400787d66d44fa93550eb54ab2a9cb5bc8dfab7f74594b263cee4307e04f13
