[INFO] fetching crate tranquil 0.2.0...
[INFO] testing tranquil-0.2.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate tranquil 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate tranquil 0.2.0
[INFO] finished tweaking crates.io crate tranquil 0.2.0
[INFO] tweaked toml for crates.io crate tranquil 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tranquil 0.2.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tranquil 0.2.0 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v1.8.0
[INFO] [stderr]   Downloaded tranquil-macros v0.2.0
[INFO] [stderr]   Downloaded unicode-ident v1.0.5
[INFO] [stderr]   Downloaded indoc v1.0.7
[INFO] [stderr]   Downloaded serde_derive v1.0.147
[INFO] [stderr]   Downloaded digest v0.10.5
[INFO] [stderr]   Downloaded futures-sink v0.3.25
[INFO] [stderr]   Downloaded proc-macro2 v1.0.47
[INFO] [stderr]   Downloaded serde-tuple-vec-map v1.0.1
[INFO] [stderr]   Downloaded try-lock v0.2.3
[INFO] [stderr]   Downloaded num_threads v0.1.6
[INFO] [stderr]   Downloaded typemap_rev v0.1.5
[INFO] [stderr]   Downloaded bounded-integer v0.5.3
[INFO] [stderr]   Downloaded darling_macro v0.14.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.83
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.1
[INFO] [stderr]   Downloaded ordered-float v2.10.0
[INFO] [stderr]   Downloaded thiserror v1.0.37
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.33
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.83
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.83
[INFO] [stderr]   Downloaded dotenvy v0.15.6
[INFO] [stderr]   Downloaded enumset_derive v0.6.1
[INFO] [stderr]   Downloaded darling v0.14.1
[INFO] [stderr]   Downloaded ipnet v2.5.0
[INFO] [stderr]   Downloaded mio v0.8.4
[INFO] [stderr]   Downloaded async-trait v0.1.58
[INFO] [stderr]   Downloaded async-tungstenite v0.17.2
[INFO] [stderr]   Downloaded tungstenite v0.17.3
[INFO] [stderr]   Downloaded futures-channel v0.3.25
[INFO] [stderr]   Downloaded mime_guess v2.0.4
[INFO] [stderr]   Downloaded unsafe-libyaml v0.2.4
[INFO] [stderr]   Downloaded darling_core v0.14.1
[INFO] [stderr]   Downloaded miniz_oxide v0.5.4
[INFO] [stderr]   Downloaded serde_yaml v0.9.14
[INFO] [stderr]   Downloaded bytes v1.2.1
[INFO] [stderr]   Downloaded js-sys v0.3.60
[INFO] [stderr]   Downloaded serde v1.0.147
[INFO] [stderr]   Downloaded time v0.3.15
[INFO] [stderr]   Downloaded bumpalo v3.11.1
[INFO] [stderr]   Downloaded syn v1.0.103
[INFO] [stderr]   Downloaded hyper v0.14.20
[INFO] [stderr]   Downloaded futures-util v0.3.25
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.83
[INFO] [stderr]   Downloaded reqwest v0.11.12
[INFO] [stderr]   Downloaded h2 v0.3.14
[INFO] [stderr]   Downloaded webpki-roots v0.22.5
[INFO] [stderr]   Downloaded serde_json v1.0.87
[INFO] [stderr]   Downloaded rustls v0.20.7
[INFO] [stderr]   Downloaded indexmap v1.9.1
[INFO] [stderr]   Downloaded futures v0.3.25
[INFO] [stderr]   Downloaded ryu v1.0.11
[INFO] [stderr]   Downloaded tokio-rustls v0.23.4
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.83
[INFO] [stderr]   Downloaded once_cell v1.15.0
[INFO] [stderr]   Downloaded futures-task v0.3.25
[INFO] [stderr]   Downloaded hyper-rustls v0.23.0
[INFO] [stderr]   Downloaded futures-core v0.3.25
[INFO] [stderr]   Downloaded enumset v1.0.12
[INFO] [stderr]   Downloaded thiserror-impl v1.0.37
[INFO] [stderr]   Downloaded serde-value v0.7.0
[INFO] [stderr]   Downloaded futures-io v0.3.25
[INFO] [stderr]   Downloaded serenity v0.11.5
[INFO] [stderr]   Downloaded libc v0.2.135
[INFO] [stderr]   Downloaded tokio v1.21.2
[INFO] [stderr]   Downloaded futures-macro v0.3.25
[INFO] [stderr]   Downloaded itoa v1.0.4
[INFO] [stderr]   Downloaded web-sys v0.3.60
[INFO] [stderr]   Downloaded encoding_rs v0.8.31
[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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44af75db7e0845a223932b8a19ba804d905e5ec72d0bb1a5746c7c30d568bb1f
[INFO] running `Command { std: "docker" "start" "-a" "44af75db7e0845a223932b8a19ba804d905e5ec72d0bb1a5746c7c30d568bb1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44af75db7e0845a223932b8a19ba804d905e5ec72d0bb1a5746c7c30d568bb1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44af75db7e0845a223932b8a19ba804d905e5ec72d0bb1a5746c7c30d568bb1f", kill_on_drop: false }`
[INFO] [stdout] 44af75db7e0845a223932b8a19ba804d905e5ec72d0bb1a5746c7c30d568bb1f
[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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb88917d1b85bd6b7242d0daac3fedaa233caab9aac2a3134cb27544df9fa8f3
[INFO] running `Command { std: "docker" "start" "-a" "cb88917d1b85bd6b7242d0daac3fedaa233caab9aac2a3134cb27544df9fa8f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling once_cell v1.15.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling itoa v1.0.4
[INFO] [stderr]    Compiling bytes v1.2.1
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling futures-sink v0.3.25
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling rustls v0.20.7
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 futures-io v0.3.25
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling form_urlencoded v1.1.0
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling http v0.2.8
[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" "cb88917d1b85bd6b7242d0daac3fedaa233caab9aac2a3134cb27544df9fa8f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb88917d1b85bd6b7242d0daac3fedaa233caab9aac2a3134cb27544df9fa8f3", kill_on_drop: false }`
[INFO] [stdout] cb88917d1b85bd6b7242d0daac3fedaa233caab9aac2a3134cb27544df9fa8f3