[INFO] fetching crate jsonerr 0.0.3...
[INFO] checking jsonerr-0.0.3 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate jsonerr 0.0.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate jsonerr 0.0.3 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsonerr 0.0.3
[INFO] finished tweaking crates.io crate jsonerr 0.0.3
[INFO] tweaked toml for crates.io crate jsonerr 0.0.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate jsonerr 0.0.3 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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28b91f50a6936f1d3a05797a655ce35f62dcfcf41f18edeb89d038a446893fe1
[INFO] running `Command { std: "docker" "start" "-a" "28b91f50a6936f1d3a05797a655ce35f62dcfcf41f18edeb89d038a446893fe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28b91f50a6936f1d3a05797a655ce35f62dcfcf41f18edeb89d038a446893fe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28b91f50a6936f1d3a05797a655ce35f62dcfcf41f18edeb89d038a446893fe1", kill_on_drop: false }`
[INFO] [stdout] 28b91f50a6936f1d3a05797a655ce35f62dcfcf41f18edeb89d038a446893fe1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dcb1f066dc3f88c94ed711ed2b4ad29e0b8b786423e804b3a340d1782ebe527
[INFO] running `Command { std: "docker" "start" "-a" "7dcb1f066dc3f88c94ed711ed2b4ad29e0b8b786423e804b3a340d1782ebe527", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]    Compiling function_name-proc-macro v0.3.0
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking function_name v0.3.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.59/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] [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] running `Command { std: "docker" "inspect" "7dcb1f066dc3f88c94ed711ed2b4ad29e0b8b786423e804b3a340d1782ebe527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dcb1f066dc3f88c94ed711ed2b4ad29e0b8b786423e804b3a340d1782ebe527", kill_on_drop: false }`
[INFO] [stdout] 7dcb1f066dc3f88c94ed711ed2b4ad29e0b8b786423e804b3a340d1782ebe527
[INFO] checking jsonerr-0.0.3 against try#9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88 for pr-124157
[INFO] extracting crate jsonerr 0.0.3 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate jsonerr 0.0.3 on toolchain 9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsonerr 0.0.3
[INFO] finished tweaking crates.io crate jsonerr 0.0.3
[INFO] tweaked toml for crates.io crate jsonerr 0.0.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate jsonerr 0.0.3 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" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd87fe2cac8eac6dbdd0ecf82f03feadd14041f1f9b0780bae03fcec8592f7fc
[INFO] running `Command { std: "docker" "start" "-a" "fd87fe2cac8eac6dbdd0ecf82f03feadd14041f1f9b0780bae03fcec8592f7fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd87fe2cac8eac6dbdd0ecf82f03feadd14041f1f9b0780bae03fcec8592f7fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd87fe2cac8eac6dbdd0ecf82f03feadd14041f1f9b0780bae03fcec8592f7fc", kill_on_drop: false }`
[INFO] [stdout] fd87fe2cac8eac6dbdd0ecf82f03feadd14041f1f9b0780bae03fcec8592f7fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6bc032cc241ea88e8ceb147b5af49f04b207e24fe00ce6a16d1acf18808a761
[INFO] running `Command { std: "docker" "start" "-a" "a6bc032cc241ea88e8ceb147b5af49f04b207e24fe00ce6a16d1acf18808a761", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]    Compiling function_name-proc-macro v0.3.0
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking function_name v0.3.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.59/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] [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] running `Command { std: "docker" "inspect" "a6bc032cc241ea88e8ceb147b5af49f04b207e24fe00ce6a16d1acf18808a761", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6bc032cc241ea88e8ceb147b5af49f04b207e24fe00ce6a16d1acf18808a761", kill_on_drop: false }`
[INFO] [stdout] a6bc032cc241ea88e8ceb147b5af49f04b207e24fe00ce6a16d1acf18808a761
