[INFO] fetching crate mlc 0.16.3...
[INFO] checking mlc-0.16.3 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3
[INFO] extracting crate mlc 0.16.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate mlc 0.16.3 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate mlc 0.16.3
[INFO] finished tweaking crates.io crate mlc 0.16.3
[INFO] tweaked toml for crates.io crate mlc 0.16.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate mlc 0.16.3 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded url-escape v0.1.1
[INFO] [stderr]   Downloaded ntest_timeout v0.9.0
[INFO] [stderr]   Downloaded redox_syscall v0.2.15
[INFO] [stderr]   Downloaded tracing-core v0.1.28
[INFO] [stderr]   Downloaded ntest_test_cases v0.9.0
[INFO] [stderr]   Downloaded ntest v0.9.0
[INFO] [stderr]   Downloaded bytes v1.2.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.83
[INFO] [stderr]   Downloaded openssl v0.10.48
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60f264fb789091dc31ea8b029ba02876997c21a74e9fa5fbf1ebf986fd22ab00
[INFO] running `Command { std: "docker" "start" "-a" "60f264fb789091dc31ea8b029ba02876997c21a74e9fa5fbf1ebf986fd22ab00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60f264fb789091dc31ea8b029ba02876997c21a74e9fa5fbf1ebf986fd22ab00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60f264fb789091dc31ea8b029ba02876997c21a74e9fa5fbf1ebf986fd22ab00", kill_on_drop: false }`
[INFO] [stdout] 60f264fb789091dc31ea8b029ba02876997c21a74e9fa5fbf1ebf986fd22ab00
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc5a807ad513916ef2a094a607a669f36829ebe3c54f02fb47ce098006742b8e
[INFO] running `Command { std: "docker" "start" "-a" "dc5a807ad513916ef2a094a607a669f36829ebe3c54f02fb47ce098006742b8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking bytes v1.2.0
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/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 indexmap v1.9.1
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]    Compiling openssl-src v111.22.0+1.1.1q
[INFO] [stderr]     Checking tracing-core v0.1.28
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "dc5a807ad513916ef2a094a607a669f36829ebe3c54f02fb47ce098006742b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc5a807ad513916ef2a094a607a669f36829ebe3c54f02fb47ce098006742b8e", kill_on_drop: false }`
[INFO] [stdout] dc5a807ad513916ef2a094a607a669f36829ebe3c54f02fb47ce098006742b8e
[INFO] checking mlc-0.16.3 against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-3
[INFO] extracting crate mlc 0.16.3 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate mlc 0.16.3 on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate mlc 0.16.3
[INFO] finished tweaking crates.io crate mlc 0.16.3
[INFO] tweaked toml for crates.io crate mlc 0.16.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate mlc 0.16.3 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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] edcd1e04546cafaf03219922f187bc3379afb60aba7039104e14c0d8cfe48b78
[INFO] running `Command { std: "docker" "start" "-a" "edcd1e04546cafaf03219922f187bc3379afb60aba7039104e14c0d8cfe48b78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edcd1e04546cafaf03219922f187bc3379afb60aba7039104e14c0d8cfe48b78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edcd1e04546cafaf03219922f187bc3379afb60aba7039104e14c0d8cfe48b78", kill_on_drop: false }`
[INFO] [stdout] edcd1e04546cafaf03219922f187bc3379afb60aba7039104e14c0d8cfe48b78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 542fb1f83657ec63d627aadad367cc7261b20ac003e2c9db18c79b86578921e0
[INFO] running `Command { std: "docker" "start" "-a" "542fb1f83657ec63d627aadad367cc7261b20ac003e2c9db18c79b86578921e0", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "542fb1f83657ec63d627aadad367cc7261b20ac003e2c9db18c79b86578921e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "542fb1f83657ec63d627aadad367cc7261b20ac003e2c9db18c79b86578921e0", kill_on_drop: false }`
[INFO] [stdout] 542fb1f83657ec63d627aadad367cc7261b20ac003e2c9db18c79b86578921e0