[INFO] fetching crate tower-api-client 0.1.1...
[INFO] building tower-api-client-0.1.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate tower-api-client 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate tower-api-client 0.1.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate tower-api-client 0.1.1
[INFO] tweaked toml for crates.io crate tower-api-client 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tower-api-client 0.1.1 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tower-api-client 0.1.1 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.153
[INFO] [stderr]   Downloaded futures-sink v0.3.26
[INFO] [stderr]   Downloaded futures-task v0.3.26
[INFO] [stderr]   Downloaded futures-io v0.3.26
[INFO] [stderr]   Downloaded futures-channel v0.3.26
[INFO] [stderr]   Downloaded anyhow v1.0.69
[INFO] [stderr]   Downloaded serde_qs v0.12.0
[INFO] [stderr]   Downloaded stream-flatten-iters v0.2.0
[INFO] [stderr]   Downloaded async-trait v0.1.66
[INFO] [stderr]   Downloaded futures-executor v0.3.26
[INFO] [stderr]   Downloaded security-framework-sys v2.8.0
[INFO] [stderr]   Downloaded io-lifetimes v1.0.6
[INFO] [stderr]   Downloaded futures-util v0.3.26
[INFO] [stderr]   Downloaded tokio-util v0.7.7
[INFO] [stderr]   Downloaded h2 v0.3.16
[INFO] [stderr]   Downloaded hyper v0.14.24
[INFO] [stderr]   Downloaded serde v1.0.153
[INFO] [stderr]   Downloaded tokio v1.26.0
[INFO] [stderr]   Downloaded tempfile v3.4.0
[INFO] [stderr]   Downloaded security-framework v2.8.2
[INFO] [stderr]   Downloaded rustix v0.36.9
[INFO] [stderr]   Downloaded reusable-box-future v0.2.0
[INFO] [stderr]   Downloaded zeroize v1.5.7
[INFO] [stderr]   Downloaded futures v0.3.26
[INFO] [stderr]   Downloaded unicode-bidi v0.3.10
[INFO] [stderr]   Downloaded futures-macro v0.3.26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 497ccfbbcc07e1f4a61d7219c7b1fc72b5feb1dc688af9c3013346f73dbc4185
[INFO] running `Command { std: "docker" "start" "-a" "497ccfbbcc07e1f4a61d7219c7b1fc72b5feb1dc688af9c3013346f73dbc4185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "497ccfbbcc07e1f4a61d7219c7b1fc72b5feb1dc688af9c3013346f73dbc4185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "497ccfbbcc07e1f4a61d7219c7b1fc72b5feb1dc688af9c3013346f73dbc4185", kill_on_drop: false }`
[INFO] [stdout] 497ccfbbcc07e1f4a61d7219c7b1fc72b5feb1dc688af9c3013346f73dbc4185
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0121b2913559bc4c23f51cece1c16b32058a8947e97cb9bd5c1b881510052fd4
[INFO] running `Command { std: "docker" "start" "-a" "0121b2913559bc4c23f51cece1c16b32058a8947e97cb9bd5c1b881510052fd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling futures-task v0.3.26
[INFO] [stderr]    Compiling futures-channel v0.3.26
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling futures-util v0.3.26
[INFO] [stderr]    Compiling futures-sink v0.3.26
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling tokio v1.26.0
[INFO] [stderr]    Compiling futures-io v0.3.26
[INFO] [stderr]    Compiling openssl v0.10.45
[INFO] [stderr]    Compiling serde v1.0.153
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling socket2 v0.4.9
[INFO] [stderr]    Compiling mio v0.8.6
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[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 bytes v1.4.0
[INFO] [stderr]    Compiling openssl-sys v0.9.80
[INFO] [stderr]    Compiling try-lock v0.2.4
[INFO] [stderr]    Compiling thiserror v1.0.39
[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" "0121b2913559bc4c23f51cece1c16b32058a8947e97cb9bd5c1b881510052fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0121b2913559bc4c23f51cece1c16b32058a8947e97cb9bd5c1b881510052fd4", kill_on_drop: false }`
[INFO] [stdout] 0121b2913559bc4c23f51cece1c16b32058a8947e97cb9bd5c1b881510052fd4