[INFO] fetching crate tgrade-valset 0.17.1...
[INFO] testing tgrade-valset-0.17.1 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739-1
[INFO] extracting crate tgrade-valset 0.17.1 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate tgrade-valset 0.17.1
[INFO] finished tweaking crates.io crate tgrade-valset 0.17.1
[INFO] tweaked toml for crates.io crate tgrade-valset 0.17.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tgrade-valset 0.17.1 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tgrade-valset 0.17.1 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" "+33835004928d3bf65db4d4712e1330766263b0bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8ddb76959c9eba00bed1bdd9846fe6542d1a6250970198e7d46dacf8f990b2c
[INFO] running `Command { std: "docker" "start" "-a" "a8ddb76959c9eba00bed1bdd9846fe6542d1a6250970198e7d46dacf8f990b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8ddb76959c9eba00bed1bdd9846fe6542d1a6250970198e7d46dacf8f990b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8ddb76959c9eba00bed1bdd9846fe6542d1a6250970198e7d46dacf8f990b2c", kill_on_drop: false }`
[INFO] [stdout] a8ddb76959c9eba00bed1bdd9846fe6542d1a6250970198e7d46dacf8f990b2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f94689759b5847762d6d43f18f61fff8328bb54aa1dcbdb8473c4f5bf7eea4d4
[INFO] running `Command { std: "docker" "start" "-a" "f94689759b5847762d6d43f18f61fff8328bb54aa1dcbdb8473c4f5bf7eea4d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling cfg-if v1.0.0
[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 const-oid v0.9.1
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling base64ct v1.5.3
[INFO] [stderr]    Compiling generic-array v0.14.6
[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-macro2-1.0.50/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling base16ct v0.1.1
[INFO] [stderr]    Compiling der v0.6.1
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling schemars v0.8.11
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling crunchy v0.2.2
[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" "f94689759b5847762d6d43f18f61fff8328bb54aa1dcbdb8473c4f5bf7eea4d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f94689759b5847762d6d43f18f61fff8328bb54aa1dcbdb8473c4f5bf7eea4d4", kill_on_drop: false }`
[INFO] [stdout] f94689759b5847762d6d43f18f61fff8328bb54aa1dcbdb8473c4f5bf7eea4d4
