[INFO] fetching crate cowstr 1.3.0...
[INFO] fixing cowstr-1.3.0 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] extracting crate cowstr 1.3.0 into /workspace/builds/worker-2-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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cowstr 1.3.0 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "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" "+622891a4e29178280638a6b63a8908bde2c0c854" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] [stderr]       Adding mutants v0.0.3 (available: v0.0.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "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-2-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 301282ad0bb6981b397a8197ff47969138235900f7e93b4741d8d34256248431
[INFO] running `Command { std: "docker" "start" "301282ad0bb6981b397a8197ff47969138235900f7e93b4741d8d34256248431", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "301282ad0bb6981b397a8197ff47969138235900f7e93b4741d8d34256248431" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "301282ad0bb6981b397a8197ff47969138235900f7e93b4741d8d34256248431", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "301282ad0bb6981b397a8197ff47969138235900f7e93b4741d8d34256248431" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[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: 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/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: 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: 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/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: 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 1.63s
[INFO] [stderr] crater-edition-check: all finished
[INFO] running `Command { std: "docker" "inspect" "301282ad0bb6981b397a8197ff47969138235900f7e93b4741d8d34256248431", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "301282ad0bb6981b397a8197ff47969138235900f7e93b4741d8d34256248431", kill_on_drop: false }`
[INFO] [stdout] 301282ad0bb6981b397a8197ff47969138235900f7e93b4741d8d34256248431
