[INFO] cloning repository https://github.com/leijianxiong/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leijianxiong/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleijianxiong%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleijianxiong%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 160043c17e8e13bbefddbaae5dcf233156971442
[INFO] testing leijianxiong/learn-rust against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleijianxiong%2Flearn-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/leijianxiong/learn-rust
[INFO] finished tweaking git repo https://github.com/leijianxiong/learn-rust
[INFO] tweaked toml for git repo https://github.com/leijianxiong/learn-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/leijianxiong/learn-rust on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/leijianxiong/learn-rust 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.59
[INFO] [stderr]   Downloaded serde_derive v1.0.163
[INFO] [stderr]   Downloaded quote v1.0.28
[INFO] [stderr]   Downloaded colored v2.0.0
[INFO] [stderr]   Downloaded clap_derive v3.2.25
[INFO] [stderr]   Downloaded mio v0.8.7
[INFO] [stderr]   Downloaded mysqlclient-sys v0.2.5
[INFO] [stderr]   Downloaded unsafe-libyaml v0.2.8
[INFO] [stderr]   Downloaded serde v1.0.163
[INFO] [stderr]   Downloaded serde_yaml v0.9.21
[INFO] [stderr]   Downloaded diesel_derives v1.4.1
[INFO] [stderr]   Downloaded regex v1.8.3
[INFO] [stderr]   Downloaded diesel v1.4.8
[INFO] [stderr]   Downloaded syn v2.0.18
[INFO] [stderr]   Downloaded libc v0.2.144
[INFO] [stderr]   Downloaded tokio v1.28.2
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8767a7de4326063238a9d38c9f23e1d643af4c068e773e0c1c759760b848f6ca
[INFO] running `Command { std: "docker" "start" "-a" "8767a7de4326063238a9d38c9f23e1d643af4c068e773e0c1c759760b848f6ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8767a7de4326063238a9d38c9f23e1d643af4c068e773e0c1c759760b848f6ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8767a7de4326063238a9d38c9f23e1d643af4c068e773e0c1c759760b848f6ca", kill_on_drop: false }`
[INFO] [stdout] 8767a7de4326063238a9d38c9f23e1d643af4c068e773e0c1c759760b848f6ca
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85fa04386a894b790233cbcb57b43c4655b00463d7909b3299d6e7071dfe048c
[INFO] running `Command { std: "docker" "start" "-a" "85fa04386a894b790233cbcb57b43c4655b00463d7909b3299d6e7071dfe048c", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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 libc v0.2.144
[INFO] [stderr]    Compiling regex-syntax v0.7.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling aho-corasick v1.0.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.13
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling tokio v1.28.2
[INFO] [stderr]    Compiling os_str_bytes v6.5.0
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.59/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] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.8
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.8
[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" "85fa04386a894b790233cbcb57b43c4655b00463d7909b3299d6e7071dfe048c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85fa04386a894b790233cbcb57b43c4655b00463d7909b3299d6e7071dfe048c", kill_on_drop: false }`
[INFO] [stdout] 85fa04386a894b790233cbcb57b43c4655b00463d7909b3299d6e7071dfe048c