[INFO] cloning repository https://github.com/mgattozzi/oxidizing-the-technical-interview
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mgattozzi/oxidizing-the-technical-interview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmgattozzi%2Foxidizing-the-technical-interview", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmgattozzi%2Foxidizing-the-technical-interview'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b536ec33119b316c2527476541def377c63b14b4
[INFO] checking mgattozzi/oxidizing-the-technical-interview against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmgattozzi%2Foxidizing-the-technical-interview" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mgattozzi/oxidizing-the-technical-interview on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mgattozzi/oxidizing-the-technical-interview
[INFO] finished tweaking git repo https://github.com/mgattozzi/oxidizing-the-technical-interview
[INFO] tweaked toml for git repo https://github.com/mgattozzi/oxidizing-the-technical-interview written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/mgattozzi/oxidizing-the-technical-interview already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f386ee9133b216f41318b741fdc6fe85a826a7fafc8605b8c77b9c1ad5f6a26e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f386ee9133b216f41318b741fdc6fe85a826a7fafc8605b8c77b9c1ad5f6a26e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f386ee9133b216f41318b741fdc6fe85a826a7fafc8605b8c77b9c1ad5f6a26e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f386ee9133b216f41318b741fdc6fe85a826a7fafc8605b8c77b9c1ad5f6a26e", kill_on_drop: false }`
[INFO] [stdout] f386ee9133b216f41318b741fdc6fe85a826a7fafc8605b8c77b9c1ad5f6a26e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 991a612e8e46234b4ffb900175f1e841068da82a20f2709e8114034853907064
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "991a612e8e46234b4ffb900175f1e841068da82a20f2709e8114034853907064", kill_on_drop: false }`
[INFO] [stderr]     Checking oxidizing-the-interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `sized`
[INFO] [stdout]   --> src/main.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub trait Sized {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]    = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]    = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `freeze`
[INFO] [stdout]   --> src/main.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | auto trait Freeze {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]    = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]    = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `receiver`
[INFO] [stdout]   --> src/main.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | trait Receiver {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]    = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]    = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `index`
[INFO] [stdout]   --> src/main.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | / trait Index<Idx: ?Sized> {
[INFO] [stdout] 57 | |     type Output: ?Sized;
[INFO] [stdout] 58 | |     fn index(&self, index: Idx) -> &Self::Output;
[INFO] [stdout] 59 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]    = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]    = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `copy`
[INFO] [stdout]   --> src/main.rs:79:1
[INFO] [stdout]    |
[INFO] [stdout] 79 | trait Copy: Clone {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]    = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]    = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `eq`
[INFO] [stdout]   --> src/main.rs:87:1
[INFO] [stdout]    |
[INFO] [stdout] 87 | / trait PartialEq<Rhs: ?Sized = Self> {
[INFO] [stdout] 88 | |     fn eq(&self, other: &Rhs) -> bool;
[INFO] [stdout] 89 | |     fn ne(&self, other: &Rhs) -> bool {
[INFO] [stdout] 90 | |         !self.eq(other)
[INFO] [stdout] 91 | |     }
[INFO] [stdout] 92 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]    = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]    = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `partial_ord`
[INFO] [stdout]    --> src/main.rs:94:1
[INFO] [stdout]     |
[INFO] [stdout] 94  | / trait PartialOrd<Rhs: ?Sized = Self>: PartialEq<Rhs> {
[INFO] [stdout] 95  | |     fn partial_cmp(&self, other: &Rhs) -> Option<Ordering>;
[INFO] [stdout] 96  | |     fn lt(&self, other: &Rhs) -> bool {
[INFO] [stdout] 97  | |         matches!(self.partial_cmp(other), Some(Less))
[INFO] [stdout] ...   |
[INFO] [stdout] 107 | |     }
[INFO] [stdout] 108 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]     = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]     = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `not`
[INFO] [stdout]    --> src/main.rs:110:1
[INFO] [stdout]     |
[INFO] [stdout] 110 | / trait Not {
[INFO] [stdout] 111 | |     type Output;
[INFO] [stdout] 112 | |
[INFO] [stdout] 113 | |     fn not(self) -> Self::Output;
[INFO] [stdout] 114 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]     = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]     = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `neg`
[INFO] [stdout]    --> src/main.rs:116:1
[INFO] [stdout]     |
[INFO] [stdout] 116 | / trait Neg {
[INFO] [stdout] 117 | |     type Output;
[INFO] [stdout] 118 | |     fn neg(self) -> Self::Output;
[INFO] [stdout] 119 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]     = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]     = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `sub`
[INFO] [stdout]    --> src/main.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | / trait Sub<Rhs = Self> {
[INFO] [stdout] 122 | |     type Output;
[INFO] [stdout] 123 | |     fn sub(self, rhs: Rhs) -> Self::Output;
[INFO] [stdout] 124 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]     = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]     = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `slice`
[INFO] [stdout]    --> src/main.rs:129:1
[INFO] [stdout]     |
[INFO] [stdout] 129 | / impl<T> [T] {
[INFO] [stdout] 130 | |     #[allow(unused_attributes)]
[INFO] [stdout] 131 | |     #[allow_internal_unstable(const_fn_union)]
[INFO] [stdout] 132 | |     const fn len(&self) -> usize {
[INFO] [stdout] ...   |
[INFO] [stdout] 142 | |     }
[INFO] [stdout] 143 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]     = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]     = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `const_ptr`
[INFO] [stdout]    --> src/main.rs:146:1
[INFO] [stdout]     |
[INFO] [stdout] 146 | / impl<T: ?Sized> *const T {
[INFO] [stdout] 147 | |     unsafe fn add(self, count: usize) -> Self
[INFO] [stdout] 148 | |     where
[INFO] [stdout] 149 | |         T: Sized,
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |     }
[INFO] [stdout] 160 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]     = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]     = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `mut_ptr`
[INFO] [stdout]    --> src/main.rs:162:1
[INFO] [stdout]     |
[INFO] [stdout] 162 | / impl<T: ?Sized> *mut T {
[INFO] [stdout] 163 | |     unsafe fn add(self, count: usize) -> *mut T
[INFO] [stdout] 164 | |     where
[INFO] [stdout] 165 | |         T: Sized,
[INFO] [stdout] ...   |
[INFO] [stdout] 174 | |     }
[INFO] [stdout] 175 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the lang item is first defined in crate `core` (which `std` depends on)
[INFO] [stdout]     = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib
[INFO] [stdout]     = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `start`
[INFO] [stdout]    --> src/main.rs:264:1
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn start<T: Termination + 'static>(main: fn() -> T, _: isize, _: *const *const u8) -> isize {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]     = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-faa3fd6c69b73b7d.rlib
[INFO] [stdout]     = note: second definition in the local crate (`oxidizing_the_interview`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `oxidizing-the-interview`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: the feature `const_if_match` has been stable since 1.46.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_if_match)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: internal compiler error: broken MIR in DefId(0:87 ~ oxidizing_the_interview[62ea]::{{impl}}[7]::neg[0]) (NoSolution): could not prove TraitPredicate(<isize as Copy>)
[INFO] [stdout]   |
[INFO] [stdout]   = note: delayed at compiler/rustc_mir/src/borrow_check/type_check/mod.rs:258:27
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] thread 'rustc' panicked at 'no errors encountered even though `delay_span_bug` issued', compiler/rustc_errors/src/lib.rs:961:13
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7f2c8636d4b0 - std::backtrace_rs::backtrace::libunwind::trace::h452faf99f32e7c93
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]    1:     0x7f2c8636d4b0 - std::backtrace_rs::backtrace::trace_unsynchronized::he40edc71437667a1
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x7f2c8636d4b0 - std::sys_common::backtrace::_print_fmt::h6c51d6ade71f46bf
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]    3:     0x7f2c8636d4b0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3cd15d7003dec37a
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]    4:     0x7f2c863dbe4c - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]    5:     0x7f2c8635f887 - std::io::Write::write_fmt::hac61caff894c35ae
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/io/mod.rs:1517
[INFO] [stderr]    6:     0x7f2c86372190 - std::sys_common::backtrace::_print::haa2f390fb7957e3e
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]    7:     0x7f2c86372190 - std::sys_common::backtrace::print::h48c7cbbad9013bb1
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]    8:     0x7f2c86372190 - std::panicking::default_hook::{{closure}}::h8b7ff05a31e71d55
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/panicking.rs:208
[INFO] [stderr]    9:     0x7f2c86371edc - std::panicking::default_hook::h2f00c78800d98e4c
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/panicking.rs:227
[INFO] [stderr]   10:     0x7f2c86beef58 - rustc_driver::report_ice::hd736bea9ad59b02a
[INFO] [stderr]   11:     0x7f2c86372938 - std::panicking::rust_panic_with_hook::h4eaa635e4694aef3
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/panicking.rs:581
[INFO] [stderr]   12:     0x7f2c863724e9 - std::panicking::begin_panic_handler::{{closure}}::hec242f1b136b5ff2
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/panicking.rs:484
[INFO] [stderr]   13:     0x7f2c8636d91c - std::sys_common::backtrace::__rust_end_short_backtrace::h1f3cc383ee6c0374
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]   14:     0x7f2c863724a9 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/panicking.rs:483
[INFO] [stderr]   15:     0x7f2c8637245b - std::panicking::begin_panic_fmt::hebfdcd945bbd27b1
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/panicking.rs:437
[INFO] [stderr]   16:     0x7f2c89bb4001 - rustc_errors::HandlerInner::flush_delayed::h2c3aafbae684cfc4
[INFO] [stderr]   17:     0x7f2c89bb07e1 - <rustc_errors::HandlerInner as core::ops::drop::Drop>::drop::h1d54a15167394493
[INFO] [stderr]   18:     0x7f2c86b74086 - core::ptr::drop_in_place::hfd793d113e997faf
[INFO] [stderr]   19:     0x7f2c86b753b6 - <alloc::rc::Rc<T> as core::ops::drop::Drop>::drop::h5a91048a4a774455
[INFO] [stderr]   20:     0x7f2c86bac1fd - core::ptr::drop_in_place::h3ca67d8903970ab2
[INFO] [stderr]   21:     0x7f2c86ba42bb - rustc_span::with_source_map::he52d2e0c6177f287
[INFO] [stderr]   22:     0x7f2c86c13848 - rustc_interface::interface::create_compiler_and_run::h80874578e642ac73
[INFO] [stderr]   23:     0x7f2c86bf23ca - scoped_tls::ScopedKey<T>::set::h7e0a01d39c8551cf
[INFO] [stderr]   24:     0x7f2c86c01e97 - std::sys_common::backtrace::__rust_begin_short_backtrace::hd515bf0a4768efd9
[INFO] [stderr]   25:     0x7f2c86b8e1ee - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc776a06d7e45ba64
[INFO] [stderr]   26:     0x7f2c86381eda - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h12eb11286d55ef7c
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/alloc/src/boxed.rs:1042
[INFO] [stderr]   27:     0x7f2c86381eda - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h7a8834e2603fbb01
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/alloc/src/boxed.rs:1042
[INFO] [stderr]   28:     0x7f2c86381eda - std::sys::unix::thread::Thread::new::thread_start::h0afd1709a500dd5c
[INFO] [stderr]                                at /rustc/72f88fc4e9458f89516a0b8b0868f3718aec5b47/library/std/src/sys/unix/thread.rs:87
[INFO] [stderr]   29:     0x7f2c8629f609 - start_thread
[INFO] [stderr]   30:     0x7f2c861b3103 - clone
[INFO] [stderr]   31:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] error: internal compiler error: unexpected panic
[INFO] [stderr] 
[INFO] [stderr] note: the compiler unexpectedly panicked. this is a bug.
[INFO] [stderr] 
[INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.48.0-nightly (72f88fc4e 2020-09-04) running on x86_64-unknown-linux-gnu
[INFO] [stderr] 
[INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type bin
[INFO] [stderr] 
[INFO] [stderr] note: some of the compiler flags provided by cargo are hidden
[INFO] [stderr] 
[INFO] [stderr] query stack during panic:
[INFO] [stderr] end of query stack
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "991a612e8e46234b4ffb900175f1e841068da82a20f2709e8114034853907064", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "991a612e8e46234b4ffb900175f1e841068da82a20f2709e8114034853907064", kill_on_drop: false }`
[INFO] [stdout] 991a612e8e46234b4ffb900175f1e841068da82a20f2709e8114034853907064
