[INFO] cloning repository https://github.com/codehans/kujirans-racers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codehans/kujirans-racers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodehans%2Fkujirans-racers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodehans%2Fkujirans-racers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2db9723a2183ad27d1c32d8c27a120341602144e
[INFO] testing codehans/kujirans-racers against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodehans%2Fkujirans-racers" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/codehans/kujirans-racers
[INFO] finished tweaking git repo https://github.com/codehans/kujirans-racers
[INFO] tweaked toml for git repo https://github.com/codehans/kujirans-racers written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/codehans/kujirans-racers on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/codehans/kujirans-racers 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.38
[INFO] [stderr]   Downloaded thiserror-impl v1.0.38
[INFO] [stderr]   Downloaded quote v1.0.23
[INFO] [stderr]   Downloaded cosmwasm-derive v1.2.1
[INFO] [stderr]   Downloaded dyn-clone v1.0.10
[INFO] [stderr]   Downloaded cw2 v1.0.1
[INFO] [stderr]   Downloaded rfc6979 v0.3.1
[INFO] [stderr]   Downloaded group v0.12.1
[INFO] [stderr]   Downloaded cosmwasm-schema v1.2.1
[INFO] [stderr]   Downloaded zeroize v1.5.7
[INFO] [stderr]   Downloaded cpufeatures v0.2.5
[INFO] [stderr]   Downloaded cosmwasm-crypto v1.2.1
[INFO] [stderr]   Downloaded cosmwasm-storage v1.2.1
[INFO] [stderr]   Downloaded ed25519-zebra v3.1.0
[INFO] [stderr]   Downloaded anyhow v1.0.69
[INFO] [stderr]   Downloaded crypto-bigint v0.4.9
[INFO] [stderr]   Downloaded bytes v1.4.0
[INFO] [stderr]   Downloaded cw-multi-test v0.16.2
[INFO] [stderr]   Downloaded cw-storage-plus v1.0.1
[INFO] [stderr]   Downloaded der v0.6.1
[INFO] [stderr]   Downloaded cosmwasm-std v1.2.1
[INFO] [stderr]   Downloaded serde_json v1.0.93
[INFO] [stderr]   Downloaded syn v1.0.107
[INFO] [stderr]   Downloaded serde v1.0.152
[INFO] [stderr]   Downloaded ryu v1.0.12
[INFO] [stderr]   Downloaded serde_derive v1.0.152
[INFO] [stderr]   Downloaded base64ct v1.5.3
[INFO] [stderr]   Downloaded const-oid v0.9.1
[INFO] [stderr]   Downloaded typenum v1.16.0
[INFO] [stderr]   Downloaded semver v1.0.16
[INFO] [stderr]   Downloaded cw-utils v1.0.1
[INFO] [stderr]   Downloaded cosmwasm-schema-derive v1.2.1
[INFO] [stderr]   Downloaded serde-json-wasm v0.5.0
[INFO] [stderr]   Downloaded uint v0.9.5
[INFO] [stderr]   Downloaded ff v0.12.1
[INFO] [stderr]   Downloaded digest v0.10.6
[INFO] [stderr]   Downloaded itoa v1.0.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.51
[INFO] [stderr]   Downloaded unicode-ident v1.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54244186507b4678d0841b0dcc80a4f8ccdc1ad24c74cef91cb1608a2ce30570
[INFO] running `Command { std: "docker" "start" "-a" "54244186507b4678d0841b0dcc80a4f8ccdc1ad24c74cef91cb1608a2ce30570", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54244186507b4678d0841b0dcc80a4f8ccdc1ad24c74cef91cb1608a2ce30570", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54244186507b4678d0841b0dcc80a4f8ccdc1ad24c74cef91cb1608a2ce30570", kill_on_drop: false }`
[INFO] [stdout] 54244186507b4678d0841b0dcc80a4f8ccdc1ad24c74cef91cb1608a2ce30570
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 34bf7a7f3fc936793d59c9e329bf21f7cddb5a264fd40f43d3c8e5fc38a48d5d
[INFO] running `Command { std: "docker" "start" "-a" "34bf7a7f3fc936793d59c9e329bf21f7cddb5a264fd40f43d3c8e5fc38a48d5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling zeroize v1.5.7
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling const-oid v0.9.1
[INFO] [stderr]    Compiling base64ct v1.5.3
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling der v0.6.1
[INFO] [stderr]    Compiling base16ct v0.1.1
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling serde_json v1.0.93
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "34bf7a7f3fc936793d59c9e329bf21f7cddb5a264fd40f43d3c8e5fc38a48d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34bf7a7f3fc936793d59c9e329bf21f7cddb5a264fd40f43d3c8e5fc38a48d5d", kill_on_drop: false }`
[INFO] [stdout] 34bf7a7f3fc936793d59c9e329bf21f7cddb5a264fd40f43d3c8e5fc38a48d5d