[INFO] fetching crate screech 0.12.0... [INFO] testing screech-0.12.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0 [INFO] extracting crate screech 0.12.0 into /workspace/builds/worker-6-tc1/source [INFO] started tweaking crates.io crate screech 0.12.0 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate screech 0.12.0 [INFO] tweaked toml for crates.io crate screech 0.12.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate screech 0.12.0 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 crates.io crate screech 0.12.0 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 serde_derive v1.0.158 [INFO] [stderr] Downloaded serde v1.0.158 [INFO] [stderr] Downloaded syn v2.0.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c098083d46d1f49caf04c7a3e7640840419349753bfe029875aa77179372daec [INFO] running `Command { std: "docker" "start" "-a" "c098083d46d1f49caf04c7a3e7640840419349753bfe029875aa77179372daec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c098083d46d1f49caf04c7a3e7640840419349753bfe029875aa77179372daec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c098083d46d1f49caf04c7a3e7640840419349753bfe029875aa77179372daec", kill_on_drop: false }` [INFO] [stdout] c098083d46d1f49caf04c7a3e7640840419349753bfe029875aa77179372daec [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] aada8e32567c3cb1b9486ca3cafb933465ca3afae36e7deb439d9a1527f45df2 [INFO] running `Command { std: "docker" "start" "-a" "aada8e32567c3cb1b9486ca3cafb933465ca3afae36e7deb439d9a1527f45df2", kill_on_drop: false }` [INFO] [stderr] Compiling libm v0.2.1 [INFO] [stderr] Compiling screech v0.12.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.36s [INFO] running `Command { std: "docker" "inspect" "aada8e32567c3cb1b9486ca3cafb933465ca3afae36e7deb439d9a1527f45df2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aada8e32567c3cb1b9486ca3cafb933465ca3afae36e7deb439d9a1527f45df2", kill_on_drop: false }` [INFO] [stdout] aada8e32567c3cb1b9486ca3cafb933465ca3afae36e7deb439d9a1527f45df2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] 1f9a74cfff66737216ea60a0ac15dafe061736bbbec4a032fe0941b4a8d67d1c [INFO] running `Command { std: "docker" "start" "-a" "1f9a74cfff66737216ea60a0ac15dafe061736bbbec4a032fe0941b4a8d67d1c", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.52 [INFO] [stderr] Compiling quote v1.0.26 [INFO] [stderr] Compiling unicode-ident v1.0.8 [INFO] [stderr] Compiling crossbeam-utils v0.8.15 [INFO] [stderr] Compiling memoffset v0.8.0 [INFO] [stderr] Compiling serde_derive v1.0.158 [INFO] [stderr] Compiling libc v0.2.140 [INFO] [stderr] Compiling crossbeam-epoch v0.9.14 [INFO] [stderr] Compiling serde v1.0.158 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling indexmap v1.9.2 [INFO] [stderr] Compiling serde_json v1.0.94 [INFO] [stderr] Compiling rayon-core v1.11.0 [INFO] [stderr] Compiling either v1.8.1 [INFO] [stderr] Compiling ciborium-io v0.2.0 [INFO] [stderr] Compiling itoa v1.0.6 [INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.52/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 crossbeam-channel v0.5.7 [INFO] [stderr] Compiling os_str_bytes v6.5.0 [INFO] [stderr] Compiling ryu v1.0.13 [INFO] [stderr] Compiling plotters-backend v0.3.4 [INFO] [stderr] Compiling half v1.8.2 [INFO] [stderr] Compiling clap_lex v0.2.4 [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" "1f9a74cfff66737216ea60a0ac15dafe061736bbbec4a032fe0941b4a8d67d1c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1f9a74cfff66737216ea60a0ac15dafe061736bbbec4a032fe0941b4a8d67d1c", kill_on_drop: false }` [INFO] [stdout] 1f9a74cfff66737216ea60a0ac15dafe061736bbbec4a032fe0941b4a8d67d1c