[INFO] fetching crate docs_to_markdown 0.1.4...
[INFO] checking docs_to_markdown-0.1.4 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate docs_to_markdown 0.1.4 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate docs_to_markdown 0.1.4 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate docs_to_markdown 0.1.4
[INFO] finished tweaking crates.io crate docs_to_markdown 0.1.4
[INFO] tweaked toml for crates.io crate docs_to_markdown 0.1.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate docs_to_markdown 0.1.4 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ipnet v2.6.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.79
[INFO] [stderr]   Downloaded openssl v0.10.44
[INFO] [stderr]   Downloaded linux-raw-sys v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd444b134c14eddc7946949a2c833930e8b2e9add6853e988be7def2039f60db
[INFO] running `Command { std: "docker" "start" "-a" "fd444b134c14eddc7946949a2c833930e8b2e9add6853e988be7def2039f60db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd444b134c14eddc7946949a2c833930e8b2e9add6853e988be7def2039f60db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd444b134c14eddc7946949a2c833930e8b2e9add6853e988be7def2039f60db", kill_on_drop: false }`
[INFO] [stdout] fd444b134c14eddc7946949a2c833930e8b2e9add6853e988be7def2039f60db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 129e497a389e16347faf569261f209282daedc2e5f9fb84eb83244e64637f7e1
[INFO] running `Command { std: "docker" "start" "-a" "129e497a389e16347faf569261f209282daedc2e5f9fb84eb83244e64637f7e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]    Compiling serde v1.0.149
[INFO] [stderr]    Compiling tokio v1.23.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking parking_lot_core v0.9.5
[INFO] [stderr]     Checking num_cpus v1.14.0
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]     Checking futf v0.1.5
[INFO] [stderr]    Compiling futures-util v0.3.25
[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 openssl v0.10.44
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking tendril v0.4.3
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking io-lifetimes v1.0.3
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking linux-raw-sys v0.1.3
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking ipnet v2.6.0
[INFO] [stderr]     Checking regex v1.7.0
[INFO] [stderr]     Checking bit-set v0.5.3
[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" "129e497a389e16347faf569261f209282daedc2e5f9fb84eb83244e64637f7e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "129e497a389e16347faf569261f209282daedc2e5f9fb84eb83244e64637f7e1", kill_on_drop: false }`
[INFO] [stdout] 129e497a389e16347faf569261f209282daedc2e5f9fb84eb83244e64637f7e1
[INFO] checking docs_to_markdown-0.1.4 against try#72eda894eb3548c7ba774079ce0afab42958d4ee for pr-121848-1
[INFO] extracting crate docs_to_markdown 0.1.4 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate docs_to_markdown 0.1.4 on toolchain 72eda894eb3548c7ba774079ce0afab42958d4ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate docs_to_markdown 0.1.4
[INFO] finished tweaking crates.io crate docs_to_markdown 0.1.4
[INFO] tweaked toml for crates.io crate docs_to_markdown 0.1.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate docs_to_markdown 0.1.4 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" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ebdffeaa95ca81b6de329b00c19272b4767516919efefb6fc5125ed23248b3a
[INFO] running `Command { std: "docker" "start" "-a" "1ebdffeaa95ca81b6de329b00c19272b4767516919efefb6fc5125ed23248b3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ebdffeaa95ca81b6de329b00c19272b4767516919efefb6fc5125ed23248b3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ebdffeaa95ca81b6de329b00c19272b4767516919efefb6fc5125ed23248b3a", kill_on_drop: false }`
[INFO] [stdout] 1ebdffeaa95ca81b6de329b00c19272b4767516919efefb6fc5125ed23248b3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d3a6cd89ee0f414efc33b6b51c073b969c382b3466a64870ad21e93aca9ca46
[INFO] running `Command { std: "docker" "start" "-a" "2d3a6cd89ee0f414efc33b6b51c073b969c382b3466a64870ad21e93aca9ca46", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]    Compiling serde v1.0.149
[INFO] [stderr]    Compiling tokio v1.23.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking parking_lot_core v0.9.5
[INFO] [stderr]     Checking num_cpus v1.14.0
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking futf v0.1.5
[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]     Checking precomputed-hash v0.1.1
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling openssl v0.10.44
[INFO] [stderr]     Checking tendril v0.4.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]     Checking io-lifetimes v1.0.3
[INFO] [stderr]     Checking futures-channel v0.3.25
[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]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking linux-raw-sys v0.1.3
[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" "2d3a6cd89ee0f414efc33b6b51c073b969c382b3466a64870ad21e93aca9ca46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d3a6cd89ee0f414efc33b6b51c073b969c382b3466a64870ad21e93aca9ca46", kill_on_drop: false }`
[INFO] [stdout] 2d3a6cd89ee0f414efc33b6b51c073b969c382b3466a64870ad21e93aca9ca46
