[INFO] cloning repository https://github.com/BrenoSantanaBruno/Rust-Exercises-The-Start
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BrenoSantanaBruno/Rust-Exercises-The-Start" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrenoSantanaBruno%2FRust-Exercises-The-Start", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrenoSantanaBruno%2FRust-Exercises-The-Start'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d4e449a298daae4831285f6e01f5c6a33bdd000
[INFO] checking BrenoSantanaBruno/Rust-Exercises-The-Start against master#292be5c7c05138d753bbd4b30db7a3f1a5c914f7 for pr-148271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrenoSantanaBruno%2FRust-Exercises-The-Start" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
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[INFO] started tweaking git repo https://github.com/BrenoSantanaBruno/Rust-Exercises-The-Start
[INFO] finished tweaking git repo https://github.com/BrenoSantanaBruno/Rust-Exercises-The-Start
[INFO] tweaked toml for git repo https://github.com/BrenoSantanaBruno/Rust-Exercises-The-Start written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BrenoSantanaBruno/Rust-Exercises-The-Start on toolchain 292be5c7c05138d753bbd4b30db7a3f1a5c914f7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+292be5c7c05138d753bbd4b30db7a3f1a5c914f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/BrenoSantanaBruno/Rust-Exercises-The-Start 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" "+292be5c7c05138d753bbd4b30db7a3f1a5c914f7" "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 uuid v0.7.4
[INFO] [stderr]   Downloaded serde v1.0.163
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+292be5c7c05138d753bbd4b30db7a3f1a5c914f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7587650116c9c09e91752a2122c42b18321db81803ea10691070957b0d354ad
[INFO] running `Command { std: "docker" "start" "-a" "f7587650116c9c09e91752a2122c42b18321db81803ea10691070957b0d354ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7587650116c9c09e91752a2122c42b18321db81803ea10691070957b0d354ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7587650116c9c09e91752a2122c42b18321db81803ea10691070957b0d354ad", kill_on_drop: false }`
[INFO] [stdout] f7587650116c9c09e91752a2122c42b18321db81803ea10691070957b0d354ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+292be5c7c05138d753bbd4b30db7a3f1a5c914f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3984c63097be1eba707f614064c5106218f4b13b3ed9be2db0208096a70b76cd
[INFO] running `Command { std: "docker" "start" "-a" "3984c63097be1eba707f614064c5106218f4b13b3ed9be2db0208096a70b76cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling proc-macro2 v1.0.58
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking object v0.30.3
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]    Compiling pin-project-internal v0.4.30
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.58/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 syn v0.15.44
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]    Compiling async-trait v0.1.68
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.38
[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" "3984c63097be1eba707f614064c5106218f4b13b3ed9be2db0208096a70b76cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3984c63097be1eba707f614064c5106218f4b13b3ed9be2db0208096a70b76cd", kill_on_drop: false }`
[INFO] [stdout] 3984c63097be1eba707f614064c5106218f4b13b3ed9be2db0208096a70b76cd
