[INFO] cloning repository https://github.com/AwesomeQubic/corroded-backdoor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AwesomeQubic/corroded-backdoor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAwesomeQubic%2Fcorroded-backdoor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAwesomeQubic%2Fcorroded-backdoor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88f959754352dd1a07f32c3283e527dd7b6a67a5
[INFO] checking AwesomeQubic/corroded-backdoor against try#a7b168ac4977e8e93a43448b44847adaa305d5a9 for pr-150557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAwesomeQubic%2Fcorroded-backdoor" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AwesomeQubic/corroded-backdoor
[INFO] finished tweaking git repo https://github.com/AwesomeQubic/corroded-backdoor
[INFO] tweaked toml for git repo https://github.com/AwesomeQubic/corroded-backdoor written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AwesomeQubic/corroded-backdoor on toolchain a7b168ac4977e8e93a43448b44847adaa305d5a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AwesomeQubic/corroded-backdoor 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" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /workspace/builds/worker-4-tc2/source/cb0/Cargo.toml
[INFO] [stderr] workspace: /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /workspace/builds/worker-4-tc2/source/cb1/Cargo.toml
[INFO] [stderr] workspace: /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /workspace/builds/worker-4-tc2/source/cb1s/Cargo.toml
[INFO] [stderr] workspace: /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /workspace/builds/worker-4-tc2/source/playgound/Cargo.toml
[INFO] [stderr] workspace: /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a78e783ff684523e0526ca89a2775c757e784ba014e26dadcc852b7980cc1653
[INFO] running `Command { std: "docker" "start" "-a" "a78e783ff684523e0526ca89a2775c757e784ba014e26dadcc852b7980cc1653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a78e783ff684523e0526ca89a2775c757e784ba014e26dadcc852b7980cc1653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a78e783ff684523e0526ca89a2775c757e784ba014e26dadcc852b7980cc1653", kill_on_drop: false }`
[INFO] [stdout] a78e783ff684523e0526ca89a2775c757e784ba014e26dadcc852b7980cc1653
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c0fd8eab3a142e8cca682417649158e36c37c0e481839ba9e0952083926f238
[INFO] running `Command { std: "docker" "start" "-a" "6c0fd8eab3a142e8cca682417649158e36c37c0e481839ba9e0952083926f238", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /opt/rustwide/workdir/cb0/Cargo.toml
[INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /opt/rustwide/workdir/cb1/Cargo.toml
[INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /opt/rustwide/workdir/cb1s/Cargo.toml
[INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /opt/rustwide/workdir/playgound/Cargo.toml
[INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]     Checking posix-errno v1.0.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]    Compiling heapless v0.9.2
[INFO] [stderr]     Checking ed25519 v2.2.3
[INFO] [stderr]     Checking linux-errno v1.1.0
[INFO] [stderr]    Compiling playgound v0.1.0 (/opt/rustwide/workdir/playgound)
[INFO] [stderr]    Compiling cb1s v0.1.0 (/opt/rustwide/workdir/cb1s)
[INFO] [stderr]    Compiling cb0 v0.1.0 (/opt/rustwide/workdir/cb0)
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]    Compiling cb1 v0.1.0 (/opt/rustwide/workdir/cb1)
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]     Checking linux-syscall v1.2.0
[INFO] [stderr]     Checking itoa v1.0.17
[INFO] [stderr] error: failed to run custom build command for `playgound v0.1.0 (/opt/rustwide/workdir/playgound)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/playgound-3d2de51d09de5b52/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr]   package:   /opt/rustwide/workdir/cb0/Cargo.toml
[INFO] [stderr]   workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]   warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr]   package:   /opt/rustwide/workdir/cb1/Cargo.toml
[INFO] [stderr]   workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]   warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr]   package:   /opt/rustwide/workdir/cb1s/Cargo.toml
[INFO] [stderr]   workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]   warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr]   package:   /opt/rustwide/workdir/playgound/Cargo.toml
[INFO] [stderr]   workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]   warning: failed to save last-use data
[INFO] [stderr]   This may prevent cargo from accurately tracking what is being used in its global cache. This information is used for automatically removing unused data in the cache.
[INFO] [stderr] 
[INFO] [stderr]   attempt to write a readonly database
[INFO] [stderr] 
[INFO] [stderr]   Caused by:
[INFO] [stderr]     Error code 8: attempt to write a readonly database
[INFO] [stderr]   error: "/opt/rustwide/rustup-home/toolchains/a7b168ac4977e8e93a43448b44847adaa305d5a9/lib/rustlib/src/rust/library/Cargo.lock" does not exist, unable to build with the standard library, try:
[INFO] [stderr]           rustup component add rust-src --toolchain a7b168ac4977e8e93a43448b44847adaa305d5a9
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (204) panicked at playgound/build.rs:21:5:
[INFO] [stderr]   assertion failed: status.success()
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x59e83609f372 - std[75ec25fb43c512a8]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x59e83609f372 - std[75ec25fb43c512a8]::backtrace_rs::backtrace::trace_unsynchronized::<std[75ec25fb43c512a8]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x59e83609f372 - std[75ec25fb43c512a8]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x59e83609f372 - <<std[75ec25fb43c512a8]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[f51910cdf277a09c]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x59e8360b114a - <core[f51910cdf277a09c]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x59e8360b114a - core[f51910cdf277a09c]::fmt::write
[INFO] [stderr]      6:     0x59e8360a3bf6 - std[75ec25fb43c512a8]::io::default_write_fmt::<std[75ec25fb43c512a8]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x59e8360a3bf6 - <std[75ec25fb43c512a8]::sys::stdio::unix::Stderr as std[75ec25fb43c512a8]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x59e83608378f - <std[75ec25fb43c512a8]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x59e83608378f - std[75ec25fb43c512a8]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x59e83609b0f1 - std[75ec25fb43c512a8]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x59e83609b2ab - std[75ec25fb43c512a8]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x59e83608387a - std[75ec25fb43c512a8]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:691:13
[INFO] [stderr]     13:     0x59e836078c99 - std[75ec25fb43c512a8]::sys::backtrace::__rust_end_short_backtrace::<std[75ec25fb43c512a8]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x59e8360840ed - __rustc[9967932211877f70]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x59e8360b17bc - core[f51910cdf277a09c]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x59e8360b1782 - core[f51910cdf277a09c]::panicking::panic
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/core/src/panicking.rs:150:5
[INFO] [stderr]     17:     0x59e836069811 - build_script_build[ec8ee5ccf74b33c2]::main
[INFO] [stderr]     18:     0x59e83606c3f3 - <fn() as core[f51910cdf277a09c]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     19:     0x59e836068eb6 - std[75ec25fb43c512a8]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     20:     0x59e836069399 - std[75ec25fb43c512a8]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     21:     0x59e83609a2a6 - <&dyn core[f51910cdf277a09c]::ops::function::Fn<(), Output = i32> + core[f51910cdf277a09c]::marker::Sync + core[f51910cdf277a09c]::panic::unwind_safe::RefUnwindSafe as core[f51910cdf277a09c]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     22:     0x59e83609a2a6 - std[75ec25fb43c512a8]::panicking::catch_unwind::do_call::<&dyn core[f51910cdf277a09c]::ops::function::Fn<(), Output = i32> + core[f51910cdf277a09c]::marker::Sync + core[f51910cdf277a09c]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:581:40
[INFO] [stderr]     23:     0x59e83609a2a6 - std[75ec25fb43c512a8]::panicking::catch_unwind::<i32, &dyn core[f51910cdf277a09c]::ops::function::Fn<(), Output = i32> + core[f51910cdf277a09c]::marker::Sync + core[f51910cdf277a09c]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:544:19
[INFO] [stderr]     24:     0x59e83609a2a6 - std[75ec25fb43c512a8]::panic::catch_unwind::<&dyn core[f51910cdf277a09c]::ops::function::Fn<(), Output = i32> + core[f51910cdf277a09c]::marker::Sync + core[f51910cdf277a09c]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x59e83609a2a6 - std[75ec25fb43c512a8]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x59e83609a2a6 - std[75ec25fb43c512a8]::panicking::catch_unwind::do_call::<std[75ec25fb43c512a8]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:581:40
[INFO] [stderr]     27:     0x59e83609a2a6 - std[75ec25fb43c512a8]::panicking::catch_unwind::<isize, std[75ec25fb43c512a8]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:544:19
[INFO] [stderr]     28:     0x59e83609a2a6 - std[75ec25fb43c512a8]::panic::catch_unwind::<std[75ec25fb43c512a8]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x59e83609a2a6 - std[75ec25fb43c512a8]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x59e836068611 - std[75ec25fb43c512a8]::rt::lang_start::<()>
[INFO] [stderr]     31:     0x59e83606c755 - main
[INFO] [stderr]     32:     0x7c0af1f151ca - <unknown>
[INFO] [stderr]     33:     0x7c0af1f1528b - __libc_start_main
[INFO] [stderr]     34:     0x59e836067a05 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: failed to run custom build command for `cb0 v0.1.0 (/opt/rustwide/workdir/cb0)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/cb0-a089b64ea4c21c4d/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr]   package:   /opt/rustwide/workdir/cb0/Cargo.toml
[INFO] [stderr]   workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]   warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr]   package:   /opt/rustwide/workdir/cb1/Cargo.toml
[INFO] [stderr]   workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]   warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr]   package:   /opt/rustwide/workdir/cb1s/Cargo.toml
[INFO] [stderr]   workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]   warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr]   package:   /opt/rustwide/workdir/playgound/Cargo.toml
[INFO] [stderr]   workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]   warning: failed to save last-use data
[INFO] [stderr]   This may prevent cargo from accurately tracking what is being used in its global cache. This information is used for automatically removing unused data in the cache.
[INFO] [stderr] 
[INFO] [stderr]   attempt to write a readonly database
[INFO] [stderr] 
[INFO] [stderr]   Caused by:
[INFO] [stderr]     Error code 8: attempt to write a readonly database
[INFO] [stderr]   error: "/opt/rustwide/rustup-home/toolchains/a7b168ac4977e8e93a43448b44847adaa305d5a9/lib/rustlib/src/rust/library/Cargo.lock" does not exist, unable to build with the standard library, try:
[INFO] [stderr]           rustup component add rust-src --toolchain a7b168ac4977e8e93a43448b44847adaa305d5a9
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (297) panicked at cb0/build.rs:24:5:
[INFO] [stderr]   assertion failed: status.success()
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x6439e9ddfd92 - std[75ec25fb43c512a8]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x6439e9ddfd92 - std[75ec25fb43c512a8]::backtrace_rs::backtrace::trace_unsynchronized::<std[75ec25fb43c512a8]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x6439e9ddfd92 - std[75ec25fb43c512a8]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x6439e9ddfd92 - <<std[75ec25fb43c512a8]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[f51910cdf277a09c]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x6439e9df1b6a - <core[f51910cdf277a09c]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x6439e9df1b6a - core[f51910cdf277a09c]::fmt::write
[INFO] [stderr]      6:     0x6439e9de4616 - std[75ec25fb43c512a8]::io::default_write_fmt::<std[75ec25fb43c512a8]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x6439e9de4616 - <std[75ec25fb43c512a8]::sys::stdio::unix::Stderr as std[75ec25fb43c512a8]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x6439e9dc41af - <std[75ec25fb43c512a8]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x6439e9dc41af - std[75ec25fb43c512a8]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x6439e9ddbb11 - std[75ec25fb43c512a8]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x6439e9ddbccb - std[75ec25fb43c512a8]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x6439e9dc429a - std[75ec25fb43c512a8]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:691:13
[INFO] [stderr]     13:     0x6439e9db96b9 - std[75ec25fb43c512a8]::sys::backtrace::__rust_end_short_backtrace::<std[75ec25fb43c512a8]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x6439e9dc4b0d - __rustc[9967932211877f70]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x6439e9df21dc - core[f51910cdf277a09c]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x6439e9df21a2 - core[f51910cdf277a09c]::panicking::panic
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/core/src/panicking.rs:150:5
[INFO] [stderr]     17:     0x6439e9da9a21 - build_script_build[c607dda4c1e5f0f3]::main
[INFO] [stderr]     18:     0x6439e9dace13 - <fn() as core[f51910cdf277a09c]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     19:     0x6439e9da90c6 - std[75ec25fb43c512a8]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     20:     0x6439e9da95a9 - std[75ec25fb43c512a8]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     21:     0x6439e9ddacc6 - <&dyn core[f51910cdf277a09c]::ops::function::Fn<(), Output = i32> + core[f51910cdf277a09c]::marker::Sync + core[f51910cdf277a09c]::panic::unwind_safe::RefUnwindSafe as core[f51910cdf277a09c]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     22:     0x6439e9ddacc6 - std[75ec25fb43c512a8]::panicking::catch_unwind::do_call::<&dyn core[f51910cdf277a09c]::ops::function::Fn<(), Output = i32> + core[f51910cdf277a09c]::marker::Sync + core[f51910cdf277a09c]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:581:40
[INFO] [stderr]     23:     0x6439e9ddacc6 - std[75ec25fb43c512a8]::panicking::catch_unwind::<i32, &dyn core[f51910cdf277a09c]::ops::function::Fn<(), Output = i32> + core[f51910cdf277a09c]::marker::Sync + core[f51910cdf277a09c]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:544:19
[INFO] [stderr]     24:     0x6439e9ddacc6 - std[75ec25fb43c512a8]::panic::catch_unwind::<&dyn core[f51910cdf277a09c]::ops::function::Fn<(), Output = i32> + core[f51910cdf277a09c]::marker::Sync + core[f51910cdf277a09c]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x6439e9ddacc6 - std[75ec25fb43c512a8]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x6439e9ddacc6 - std[75ec25fb43c512a8]::panicking::catch_unwind::do_call::<std[75ec25fb43c512a8]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:581:40
[INFO] [stderr]     27:     0x6439e9ddacc6 - std[75ec25fb43c512a8]::panicking::catch_unwind::<isize, std[75ec25fb43c512a8]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panicking.rs:544:19
[INFO] [stderr]     28:     0x6439e9ddacc6 - std[75ec25fb43c512a8]::panic::catch_unwind::<std[75ec25fb43c512a8]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x6439e9ddacc6 - std[75ec25fb43c512a8]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/a7b168ac4977e8e93a43448b44847adaa305d5a9/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x6439e9da8821 - std[75ec25fb43c512a8]::rt::lang_start::<()>
[INFO] [stderr]     31:     0x6439e9dad175 - main
[INFO] [stderr]     32:     0x75ec907dc1ca - <unknown>
[INFO] [stderr]     33:     0x75ec907dc28b - __libc_start_main
[INFO] [stderr]     34:     0x6439e9da7be5 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "6c0fd8eab3a142e8cca682417649158e36c37c0e481839ba9e0952083926f238", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c0fd8eab3a142e8cca682417649158e36c37c0e481839ba9e0952083926f238", kill_on_drop: false }`
[INFO] [stdout] 6c0fd8eab3a142e8cca682417649158e36c37c0e481839ba9e0952083926f238
