[INFO] fetching crate sigmut 0.0.2...
[INFO] testing sigmut-0.0.2 against master#160e7623e8cbbf1feab2b6e2a24733a98c7bde9c for pr-145628
[INFO] extracting crate sigmut 0.0.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate sigmut 0.0.2
[INFO] finished tweaking crates.io crate sigmut 0.0.2
[INFO] tweaked toml for crates.io crate sigmut 0.0.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sigmut 0.0.2 on toolchain 160e7623e8cbbf1feab2b6e2a24733a98c7bde9c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sigmut 0.0.2 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" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rt-local-core v0.1.3
[INFO] [stderr]   Downloaded trybuild v1.0.97
[INFO] [stderr]   Downloaded iter-n v0.1.0
[INFO] [stderr]   Downloaded slabmap v0.2.1
[INFO] [stderr]   Downloaded rt-local-macros v0.1.4
[INFO] [stderr]   Downloaded rt-local v0.1.4
[INFO] [stderr]   Downloaded sigmut-macros v0.0.2
[INFO] [stderr]   Downloaded assert-call v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c932c9d28298ec3b57607f0e0c8aa712e85db2c0c720f9596d7cc0e08efd575b
[INFO] running `Command { std: "docker" "start" "-a" "c932c9d28298ec3b57607f0e0c8aa712e85db2c0c720f9596d7cc0e08efd575b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c932c9d28298ec3b57607f0e0c8aa712e85db2c0c720f9596d7cc0e08efd575b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c932c9d28298ec3b57607f0e0c8aa712e85db2c0c720f9596d7cc0e08efd575b", kill_on_drop: false }`
[INFO] [stdout] c932c9d28298ec3b57607f0e0c8aa712e85db2c0c720f9596d7cc0e08efd575b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca81785d12d3ec2cdf4de419bce62a8446e0ad38161d0f63bf1127457a004cd7
[INFO] running `Command { std: "docker" "start" "-a" "ca81785d12d3ec2cdf4de419bce62a8446e0ad38161d0f63bf1127457a004cd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling iter-n v0.1.0
[INFO] [stderr]    Compiling bumpalo v3.16.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.71
[INFO] [stderr]    Compiling regex v1.10.5
[INFO] [stderr]    Compiling structmeta-derive v0.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling sigmut-macros v0.0.2
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling structmeta v0.3.0
[INFO] [stderr]    Compiling derive-ex v0.1.8
[INFO] [stderr] error: could not compile `derive-ex` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   could not execute process `/opt/rustwide/rustup-home/toolchains/160e7623e8cbbf1feab2b6e2a24733a98c7bde9c/bin/rustc --crate-name derive_ex --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/derive-ex-0.1.8/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=6ea5e49b7b9c55af -C extra-filename=-1628ea1103e535ca --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-90f4d189e3c1781a.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-ea54d792119c380c.rlib --extern structmeta=/opt/rustwide/target/debug/deps/libstructmeta-bf9dc68ef6ce5a39.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-1b711c5ca3aed26a.rlib --extern proc_macro --cap-lints allow --cap-lints=forbid` (never executed)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No such file or directory (os error 2)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ca81785d12d3ec2cdf4de419bce62a8446e0ad38161d0f63bf1127457a004cd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca81785d12d3ec2cdf4de419bce62a8446e0ad38161d0f63bf1127457a004cd7", kill_on_drop: false }`
[INFO] [stdout] ca81785d12d3ec2cdf4de419bce62a8446e0ad38161d0f63bf1127457a004cd7