[INFO] fetching crate almel 1.4.7...
[INFO] checking almel-1.4.7 against try#3857be5045fe74bd0f296f6f4c23db10f8857f73 for pr-156807
[INFO] extracting crate almel 1.4.7 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate almel 1.4.7
[INFO] finished tweaking crates.io crate almel 1.4.7
[INFO] tweaked toml for crates.io crate almel 1.4.7 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate almel 1.4.7 on toolchain 3857be5045fe74bd0f296f6f4c23db10f8857f73
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate almel 1.4.7 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" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded git2 v0.16.1
[INFO] [stderr]   Downloaded libgit2-sys v0.14.2+1.5.1
[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" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 53823c45e8b14e2da874cf4193e7c186cab41e471c502373cafe669ece436369
[INFO] running `Command { std: "docker" "start" "-a" "53823c45e8b14e2da874cf4193e7c186cab41e471c502373cafe669ece436369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53823c45e8b14e2da874cf4193e7c186cab41e471c502373cafe669ece436369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53823c45e8b14e2da874cf4193e7c186cab41e471c502373cafe669ece436369", kill_on_drop: false }`
[INFO] [stdout] 53823c45e8b14e2da874cf4193e7c186cab41e471c502373cafe669ece436369
[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" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b18fe0083bfaeedeeb7369eedfcfc808e5e2f7f64f44e01a9d998d02b2e5959b
[INFO] running `Command { std: "docker" "start" "-a" "b18fe0083bfaeedeeb7369eedfcfc808e5e2f7f64f44e01a9d998d02b2e5959b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking unicode-bidi v0.3.10
[INFO] [stderr]    Compiling unicode-segmentation v1.10.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking users v0.11.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/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]     Checking chrono v0.4.23
[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" "b18fe0083bfaeedeeb7369eedfcfc808e5e2f7f64f44e01a9d998d02b2e5959b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b18fe0083bfaeedeeb7369eedfcfc808e5e2f7f64f44e01a9d998d02b2e5959b", kill_on_drop: false }`
[INFO] [stdout] b18fe0083bfaeedeeb7369eedfcfc808e5e2f7f64f44e01a9d998d02b2e5959b
