[INFO] fetching crate var_quantity 0.3.3...
[INFO] testing var_quantity-0.3.3 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate var_quantity 0.3.3 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate var_quantity 0.3.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate var_quantity 0.3.3
[INFO] tweaked toml for crates.io crate var_quantity 0.3.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate var_quantity 0.3.3 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate var_quantity 0.3.3 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded typetag-impl v0.2.21
[INFO] [stderr]   Downloaded indoc v1.0.9
[INFO] [stderr]   Downloaded inventory v0.3.21
[INFO] [stderr]   Downloaded typetag v0.2.21
[INFO] [stderr]   Downloaded serde_yaml v0.8.26
[INFO] [stderr]   Downloaded deserialize_untagged_verbose_error v0.1.5
[INFO] [stderr]   Downloaded approxim v0.6.6
[INFO] [stderr]   Downloaded dyn_quantity_lexer v0.1.1
[INFO] [stderr]   Downloaded horner v0.1.2
[INFO] [stderr]   Downloaded deserialize_untagged_verbose_error_macro v0.1.3
[INFO] [stderr]   Downloaded approx-derive v0.2.6
[INFO] [stderr]   Downloaded dyn_quantity v0.5.10
[INFO] [stderr]   Downloaded uom v0.36.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3a78ecb706f63033960b6be62e7b2b3dcfb07d1d6f2bbb929c1e885667bd8c2
[INFO] running `Command { std: "docker" "start" "-a" "f3a78ecb706f63033960b6be62e7b2b3dcfb07d1d6f2bbb929c1e885667bd8c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3a78ecb706f63033960b6be62e7b2b3dcfb07d1d6f2bbb929c1e885667bd8c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3a78ecb706f63033960b6be62e7b2b3dcfb07d1d6f2bbb929c1e885667bd8c2", kill_on_drop: false }`
[INFO] [stdout] f3a78ecb706f63033960b6be62e7b2b3dcfb07d1d6f2bbb929c1e885667bd8c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e326ad607f74e50c7e9885d009c64442b5be9fd0c9356aaa487998436355412
[INFO] running `Command { std: "docker" "start" "-a" "4e326ad607f74e50c7e9885d009c64442b5be9fd0c9356aaa487998436355412", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling dyn_quantity v0.5.10
[INFO] [stderr]    Compiling var_quantity v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ordered-float v2.10.1
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling serde-value v0.7.0
[INFO] [stderr] error: failed to run custom build command for `var_quantity v0.3.3 (/opt/rustwide/workdir)`
[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/var_quantity-76efbc3546f1c68d/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (115) panicked at build.rs:18:41:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5f6df1384fea - std[29689e6404d28ef9]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5f6df1384fea - std[29689e6404d28ef9]::backtrace_rs::backtrace::trace_unsynchronized::<std[29689e6404d28ef9]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5f6df1384fea - std[29689e6404d28ef9]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x5f6df1384fea - <<std[29689e6404d28ef9]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[e929cb53b82a81ca]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x5f6df139566a - <core[e929cb53b82a81ca]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x5f6df139566a - core[e929cb53b82a81ca]::fmt::write
[INFO] [stderr]      6:     0x5f6df13886d2 - std[29689e6404d28ef9]::io::default_write_fmt::<std[29689e6404d28ef9]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/io/mod.rs:621:11
[INFO] [stderr]      7:     0x5f6df13886d2 - <std[29689e6404d28ef9]::sys::stdio::unix::Stderr as std[29689e6404d28ef9]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/io/mod.rs:1976:13
[INFO] [stderr]      8:     0x5f6df137083f - <std[29689e6404d28ef9]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x5f6df137083f - std[29689e6404d28ef9]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x5f6df1381031 - std[29689e6404d28ef9]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x5f6df13811eb - std[29689e6404d28ef9]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x5f6df13708f8 - std[29689e6404d28ef9]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x5f6df1365ce9 - std[29689e6404d28ef9]::sys::backtrace::__rust_end_short_backtrace::<std[29689e6404d28ef9]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x5f6df13710dd - __rustc[3aed6af316653e63]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x5f6df1395d1c - core[e929cb53b82a81ca]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x5f6df1395af2 - core[e929cb53b82a81ca]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/result.rs:1867:5
[INFO] [stderr]     17:     0x5f6df1359486 - build_script_build[42c94c3e4b4e509f]::main
[INFO] [stderr]     18:     0x5f6df135acc3 - <fn() as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     19:     0x5f6df1358926 - std[29689e6404d28ef9]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     20:     0x5f6df1358e69 - std[29689e6404d28ef9]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     21:     0x5f6df1380677 - <&dyn core[e929cb53b82a81ca]::ops::function::Fn<(), Output = i32> + core[e929cb53b82a81ca]::panic::unwind_safe::RefUnwindSafe + core[e929cb53b82a81ca]::marker::Sync as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     22:     0x5f6df1380677 - std[29689e6404d28ef9]::panicking::catch_unwind::do_call::<&dyn core[e929cb53b82a81ca]::ops::function::Fn<(), Output = i32> + core[e929cb53b82a81ca]::panic::unwind_safe::RefUnwindSafe + core[e929cb53b82a81ca]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:581:40
[INFO] [stderr]     23:     0x5f6df1380677 - std[29689e6404d28ef9]::panicking::catch_unwind::<i32, &dyn core[e929cb53b82a81ca]::ops::function::Fn<(), Output = i32> + core[e929cb53b82a81ca]::panic::unwind_safe::RefUnwindSafe + core[e929cb53b82a81ca]::marker::Sync>
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:544:19
[INFO] [stderr]     24:     0x5f6df1380677 - std[29689e6404d28ef9]::panic::catch_unwind::<&dyn core[e929cb53b82a81ca]::ops::function::Fn<(), Output = i32> + core[e929cb53b82a81ca]::panic::unwind_safe::RefUnwindSafe + core[e929cb53b82a81ca]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x5f6df1380677 - std[29689e6404d28ef9]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x5f6df1380677 - std[29689e6404d28ef9]::panicking::catch_unwind::do_call::<std[29689e6404d28ef9]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:581:40
[INFO] [stderr]     27:     0x5f6df1380677 - std[29689e6404d28ef9]::panicking::catch_unwind::<isize, std[29689e6404d28ef9]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:544:19
[INFO] [stderr]     28:     0x5f6df1380677 - std[29689e6404d28ef9]::panic::catch_unwind::<std[29689e6404d28ef9]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x5f6df1380677 - std[29689e6404d28ef9]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x5f6df1358661 - std[29689e6404d28ef9]::rt::lang_start::<()>
[INFO] [stderr]     31:     0x5f6df135ad75 - main
[INFO] [stderr]     32:     0x76e1c09ec1ca - <unknown>
[INFO] [stderr]     33:     0x76e1c09ec28b - __libc_start_main
[INFO] [stderr]     34:     0x5f6df13571a5 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4e326ad607f74e50c7e9885d009c64442b5be9fd0c9356aaa487998436355412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e326ad607f74e50c7e9885d009c64442b5be9fd0c9356aaa487998436355412", kill_on_drop: false }`
[INFO] [stdout] 4e326ad607f74e50c7e9885d009c64442b5be9fd0c9356aaa487998436355412
