[INFO] cloning repository https://github.com/SirVer/shell_grunt2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SirVer/shell_grunt2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirVer%2Fshell_grunt2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirVer%2Fshell_grunt2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec7f16ca066ceb9ab37f3db0fbb23b486cfeb26a
[INFO] checking SirVer/shell_grunt2 against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113240
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirVer%2Fshell_grunt2" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SirVer/shell_grunt2 on toolchain 6162f6f12339aa81fe16b8a64644ead497e411b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SirVer/shell_grunt2
[INFO] finished tweaking git repo https://github.com/SirVer/shell_grunt2
[INFO] tweaked toml for git repo https://github.com/SirVer/shell_grunt2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SirVer/shell_grunt2 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" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded term v0.6.1
[INFO] [stderr]   Downloaded indicatif v0.11.0
[INFO] [stderr]   Downloaded number_prefix v0.2.8
[INFO] [stderr]   Downloaded pathdiff v0.1.0
[INFO] [stderr]   Downloaded net2 v0.2.38
[INFO] [stderr]   Downloaded floating-duration v0.1.2
[INFO] [stderr]   Downloaded ctrlc v3.2.5
[INFO] [stderr]   Downloaded hyper-old-types v0.11.0
[INFO] [stderr]   Downloaded lua v0.0.10
[INFO] [stderr]   Downloaded bitflags v0.1.1
[INFO] [stderr]   Downloaded self_update v0.7.0
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d054e34c26b3b93a291a13bcdb799a726edfaca728752ee5ef190fa48413cdf8
[INFO] running `Command { std: "docker" "start" "-a" "d054e34c26b3b93a291a13bcdb799a726edfaca728752ee5ef190fa48413cdf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d054e34c26b3b93a291a13bcdb799a726edfaca728752ee5ef190fa48413cdf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d054e34c26b3b93a291a13bcdb799a726edfaca728752ee5ef190fa48413cdf8", kill_on_drop: false }`
[INFO] [stdout] d054e34c26b3b93a291a13bcdb799a726edfaca728752ee5ef190fa48413cdf8
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1a365a1e567b2e70d2e2468e8b498b31107efd5e1c3a2215e802ebcb4f96ce9
[INFO] running `Command { std: "docker" "start" "-a" "f1a365a1e567b2e70d2e2468e8b498b31107efd5e1c3a2215e802ebcb4f96ce9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking unicode-bidi v0.3.10
[INFO] [stderr]    Compiling openssl-sys v0.9.80
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]    Compiling openssl v0.10.45
[INFO] [stderr]     Checking object v0.30.3
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling serde_json v1.0.93
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.51/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 want v0.2.0
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stdout] error: aborting due to 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" "f1a365a1e567b2e70d2e2468e8b498b31107efd5e1c3a2215e802ebcb4f96ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1a365a1e567b2e70d2e2468e8b498b31107efd5e1c3a2215e802ebcb4f96ce9", kill_on_drop: false }`
[INFO] [stdout] f1a365a1e567b2e70d2e2468e8b498b31107efd5e1c3a2215e802ebcb4f96ce9