[INFO] cloning repository https://github.com/jeremyBanks/you-can
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeremyBanks/you-can" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjeremyBanks%2Fyou-can", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjeremyBanks%2Fyou-can'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d86ffb02abff2c3db121e220b99f32c06c6b0645
[INFO] testing jeremyBanks/you-can against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjeremyBanks%2Fyou-can" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/jeremyBanks/you-can
[INFO] finished tweaking git repo https://github.com/jeremyBanks/you-can
[INFO] tweaked toml for git repo https://github.com/jeremyBanks/you-can written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jeremyBanks/you-can on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jeremyBanks/you-can 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" "+1.95.0" "fetch" "--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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc_version v0.4.0
[INFO] [stderr]   Downloaded semver v0.9.0
[INFO] [stderr]   Downloaded rustc_version v0.2.3
[INFO] [stderr]   Downloaded itoa v1.0.3
[INFO] [stderr]   Downloaded fastrand v1.8.0
[INFO] [stderr]   Downloaded semver v1.0.13
[INFO] [stderr]   Downloaded filetime v0.2.17
[INFO] [stderr]   Downloaded getopts v0.2.21
[INFO] [stderr]   Downloaded diff v0.1.13
[INFO] [stderr]   Downloaded anyhow v1.0.61
[INFO] [stderr]   Downloaded term v0.7.0
[INFO] [stderr]   Downloaded serde v1.0.143
[INFO] [stderr]   Downloaded compiletest_rs v0.8.0
[INFO] [stderr]   Downloaded serde_derive v1.0.143
[INFO] [stderr]   Downloaded thiserror-impl v1.0.32
[INFO] [stderr]   Downloaded tester v0.9.0
[INFO] [stderr]   Downloaded unicode-ident v1.0.3
[INFO] [stderr]   Downloaded serde_json v1.0.83
[INFO] [stderr]   Downloaded syn v1.0.99
[INFO] [stderr]   Downloaded rustfix v0.6.1
[INFO] [stderr]   Downloaded getrandom v0.2.7
[INFO] [stderr]   Downloaded proc-macro2 v1.0.43
[INFO] [stderr]   Downloaded thiserror v1.0.32
[INFO] [stderr]   Downloaded rustversion v1.0.9
[INFO] [stderr]   Downloaded semver-parser v0.7.0
[INFO] [stderr]   Downloaded libc v0.2.131
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d51d02b9745f68d9f3bdd609c186b3639004dbe095062dda58859bb655f4e44c
[INFO] running `Command { std: "docker" "start" "-a" "d51d02b9745f68d9f3bdd609c186b3639004dbe095062dda58859bb655f4e44c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d51d02b9745f68d9f3bdd609c186b3639004dbe095062dda58859bb655f4e44c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d51d02b9745f68d9f3bdd609c186b3639004dbe095062dda58859bb655f4e44c", kill_on_drop: false }`
[INFO] [stdout] d51d02b9745f68d9f3bdd609c186b3639004dbe095062dda58859bb655f4e44c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb63639130c1e7a9abae9670e8995201c71461f851ba2c46fb1cf45dc33c1170
[INFO] running `Command { std: "docker" "start" "-a" "fb63639130c1e7a9abae9670e8995201c71461f851ba2c46fb1cf45dc33c1170", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling you-can-build-macros v0.0.14 (/opt/rustwide/workdir/macros)
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_is_unstable`
[INFO] [stdout]  --> macros/lib.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(rustc_is_unstable, feature(proc_macro_diagnostic, proc_macro_span))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_is_unstable)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_is_unstable)");` to the top of the `build.rs`
[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 name: `rustc_is_unstable`
[INFO] [stdout]   --> macros/lib.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |               #[cfg(not(rustc_is_unstable))] {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 | /     if_unstable! {
[INFO] [stdout] 50 | |         then {
[INFO] [stdout] 51 | |             proc_macro::Diagnostic::spanned(
[INFO] [stdout] 52 | |                 vec![Span::call_site().parent().unwrap_or_else(Span::call_site)],
[INFO] [stdout] ...  |
[INFO] [stdout] 84 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_is_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_is_unstable)");` to the top of the `build.rs`
[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: this warning originates in the macro `if_unstable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_is_unstable`
[INFO] [stdout]   --> macros/lib.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |               #[cfg(rustc_is_unstable)] {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 | /     if_unstable! {
[INFO] [stdout] 50 | |         then {
[INFO] [stdout] 51 | |             proc_macro::Diagnostic::spanned(
[INFO] [stdout] 52 | |                 vec![Span::call_site().parent().unwrap_or_else(Span::call_site)],
[INFO] [stdout] ...  |
[INFO] [stdout] 84 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_is_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_is_unstable)");` to the top of the `build.rs`
[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: this warning originates in the macro `if_unstable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_is_unstable`
[INFO] [stdout]   --> macros/lib.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |           if cfg!(rustc_is_unstable) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 | /     if_unstable! {
[INFO] [stdout] 50 | |         then {
[INFO] [stdout] 51 | |             proc_macro::Diagnostic::spanned(
[INFO] [stdout] 52 | |                 vec![Span::call_site().parent().unwrap_or_else(Span::call_site)],
[INFO] [stdout] ...  |
[INFO] [stdout] 84 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_is_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_is_unstable)");` to the top of the `build.rs`
[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: this warning originates in the macro `if_unstable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_is_unstable`
[INFO] [stdout]   --> macros/lib.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |               #[cfg(rustc_is_unstable)] {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 | /     if_unstable! {
[INFO] [stdout] 50 | |         then {
[INFO] [stdout] 51 | |             proc_macro::Diagnostic::spanned(
[INFO] [stdout] 52 | |                 vec![Span::call_site().parent().unwrap_or_else(Span::call_site)],
[INFO] [stdout] ...  |
[INFO] [stdout] 84 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_is_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_is_unstable)");` to the top of the `build.rs`
[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: this warning originates in the macro `if_unstable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling you-can v0.0.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.91s
[INFO] running `Command { std: "docker" "inspect" "fb63639130c1e7a9abae9670e8995201c71461f851ba2c46fb1cf45dc33c1170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb63639130c1e7a9abae9670e8995201c71461f851ba2c46fb1cf45dc33c1170", kill_on_drop: false }`
[INFO] [stdout] fb63639130c1e7a9abae9670e8995201c71461f851ba2c46fb1cf45dc33c1170
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16a3c53f18a34d6a8720d786cb5a56803c5846c4d7d6129d7b8d294bd2bdece7
[INFO] running `Command { std: "docker" "start" "-a" "16a3c53f18a34d6a8720d786cb5a56803c5846c4d7d6129d7b8d294bd2bdece7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling libc v0.2.131
[INFO] [stderr]    Compiling serde_derive v1.0.143
[INFO] [stderr]    Compiling serde v1.0.143
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]    Compiling anyhow v1.0.61
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling semver v1.0.13
[INFO] [stderr]    Compiling itoa v1.0.3
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling compiletest_rs v0.8.0
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling filetime v0.2.17
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling tester v0.9.0
[INFO] [stderr]    Compiling you-can-build-macros v0.0.14 (/opt/rustwide/workdir/macros)
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_is_unstable`
[INFO] [stdout]  --> macros/lib.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(rustc_is_unstable, feature(proc_macro_diagnostic, proc_macro_span))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_is_unstable)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_is_unstable)");` to the top of the `build.rs`
[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 name: `rustc_is_unstable`
[INFO] [stdout]   --> macros/lib.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |               #[cfg(not(rustc_is_unstable))] {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 | /     if_unstable! {
[INFO] [stdout] 50 | |         then {
[INFO] [stdout] 51 | |             proc_macro::Diagnostic::spanned(
[INFO] [stdout] 52 | |                 vec![Span::call_site().parent().unwrap_or_else(Span::call_site)],
[INFO] [stdout] ...  |
[INFO] [stdout] 84 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_is_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_is_unstable)");` to the top of the `build.rs`
[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: this warning originates in the macro `if_unstable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_is_unstable`
[INFO] [stdout]   --> macros/lib.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |               #[cfg(rustc_is_unstable)] {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 | /     if_unstable! {
[INFO] [stdout] 50 | |         then {
[INFO] [stdout] 51 | |             proc_macro::Diagnostic::spanned(
[INFO] [stdout] 52 | |                 vec![Span::call_site().parent().unwrap_or_else(Span::call_site)],
[INFO] [stdout] ...  |
[INFO] [stdout] 84 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_is_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_is_unstable)");` to the top of the `build.rs`
[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: this warning originates in the macro `if_unstable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_is_unstable`
[INFO] [stdout]   --> macros/lib.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |           if cfg!(rustc_is_unstable) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 | /     if_unstable! {
[INFO] [stdout] 50 | |         then {
[INFO] [stdout] 51 | |             proc_macro::Diagnostic::spanned(
[INFO] [stdout] 52 | |                 vec![Span::call_site().parent().unwrap_or_else(Span::call_site)],
[INFO] [stdout] ...  |
[INFO] [stdout] 84 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_is_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_is_unstable)");` to the top of the `build.rs`
[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: this warning originates in the macro `if_unstable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `rustc_is_unstable`
[INFO] [stdout]   --> macros/lib.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |               #[cfg(rustc_is_unstable)] {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 | /     if_unstable! {
[INFO] [stdout] 50 | |         then {
[INFO] [stdout] 51 | |             proc_macro::Diagnostic::spanned(
[INFO] [stdout] 52 | |                 vec![Span::call_site().parent().unwrap_or_else(Span::call_site)],
[INFO] [stdout] ...  |
[INFO] [stdout] 84 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_is_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_is_unstable)");` to the top of the `build.rs`
[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: this warning originates in the macro `if_unstable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling you-can v0.0.14 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rustfix v0.6.1
[INFO] [stderr] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> examples/on_block.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(stmt_expr_attributes, proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_block.rs:9:21
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut_1 = &mut owned[0];
[INFO] [stdout]   |                     ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/on_block.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]   --> examples/on_block.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut_2 = &mut owned[1];
[INFO] [stdout]    |                     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> examples/in_fn.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(custom_inner_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/in_fn.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut_1 = &mut owned[0];
[INFO] [stdout]   |                 ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/in_fn.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     #![you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]   --> examples/in_fn.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut_2 = &mut owned[1];
[INFO] [stdout]    |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `you-can` (example "in_fn") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_mod.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let mut_1 = &mut owned[0];
[INFO] [stdout]   |                     ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/on_mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_mod.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut_2 = &mut owned[1];
[INFO] [stdout]   |                     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_fn.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut_1 = &mut owned[0];
[INFO] [stdout]   |                 ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/on_fn.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `you-can` (example "on_block") due to 1 previous error; 2 warnings emitted
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_fn.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut_2 = &mut owned[1];
[INFO] [stdout]   |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> examples/on_statement.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(stmt_expr_attributes, proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_statement.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut_1 = &mut owned[0];
[INFO] [stdout]   |                 ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/on_statement.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]  --> examples/on_statement.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut_2 = &mut owned[1];
[INFO] [stdout]   |                 ^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/on_statement.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     #[you_can::turn_off_the_borrow_checker]
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `you-can` (example "on_statement") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]  DANGER   This project is using the the #[you_can::turn_off_the_borrow_checker]
[INFO] [stderr]  DANGER   macro, which is inherently unsafe, unsound, and unstable. This is not
[INFO] [stderr]  DANGER   suitable for any purpose beyond educational experimentation.
[INFO] [stderr] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> examples/in_mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(custom_inner_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]   --> examples/in_mod.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut_1 = &mut owned[0];
[INFO] [stdout]    |                     ^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> examples/in_mod.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout]  4 |     #![you_can::turn_off_the_borrow_checker]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: this warning originates in the attribute macro `you_can::turn_off_the_borrow_checker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of an `unsafe` block
[INFO] [stdout]   --> examples/in_mod.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut_2 = &mut owned[1];
[INFO] [stdout]    |                     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `you-can` (example "in_mod") due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "16a3c53f18a34d6a8720d786cb5a56803c5846c4d7d6129d7b8d294bd2bdece7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16a3c53f18a34d6a8720d786cb5a56803c5846c4d7d6129d7b8d294bd2bdece7", kill_on_drop: false }`
[INFO] [stdout] 16a3c53f18a34d6a8720d786cb5a56803c5846c4d7d6129d7b8d294bd2bdece7
