[INFO] fetching crate qwiki 0.3.1...
[INFO] building qwiki-0.3.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate qwiki 0.3.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate qwiki 0.3.1
[INFO] finished tweaking crates.io crate qwiki 0.3.1
[INFO] tweaked toml for crates.io crate qwiki 0.3.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate qwiki 0.3.1 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate qwiki 0.3.1 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.49
[INFO] [stderr]   Downloaded ryu v1.0.12
[INFO] [stderr]   Downloaded serde_derive v1.0.152
[INFO] [stderr]   Downloaded quote v1.0.23
[INFO] [stderr]   Downloaded itoa v1.0.5
[INFO] [stderr]   Downloaded serde_json v1.0.91
[INFO] [stderr]   Downloaded parking_lot_core v0.6.3
[INFO] [stderr]   Downloaded tokio-reactor v0.1.12
[INFO] [stderr]   Downloaded tokio-tcp v0.1.4
[INFO] [stderr]   Downloaded syn v1.0.107
[INFO] [stderr]   Downloaded cookie v0.12.0
[INFO] [stderr]   Downloaded try_from v0.3.2
[INFO] [stderr]   Downloaded reqwest v0.9.24
[INFO] [stderr]   Downloaded libc v0.2.139
[INFO] [stderr]   Downloaded idna v0.3.0
[INFO] [stderr]   Downloaded object v0.30.0
[INFO] [stderr]   Downloaded futures v0.1.31
[INFO] [stderr]   Downloaded cookie_store v0.7.0
[INFO] [stderr]   Downloaded futures-cpupool v0.1.8
[INFO] [stderr]   Downloaded gimli v0.27.0
[INFO] [stderr]   Downloaded security-framework v2.7.0
[INFO] [stderr]   Downloaded http v0.1.21
[INFO] [stderr]   Downloaded flate2 v1.0.25
[INFO] [stderr]   Downloaded h2 v0.1.26
[INFO] [stderr]   Downloaded tokio v0.1.22
[INFO] [stderr]   Downloaded hyper v0.12.36
[INFO] [stderr]   Downloaded openssl v0.10.45
[INFO] [stderr]   Downloaded string v0.2.1
[INFO] [stderr]   Downloaded http-body v0.1.0
[INFO] [stderr]   Downloaded tokio-buf v0.1.1
[INFO] [stderr]   Downloaded want v0.2.0
[INFO] [stderr]   Downloaded hyper-tls v0.3.2
[INFO] [stderr]   Downloaded mime v0.3.16
[INFO] [stderr]   Downloaded once_cell v1.17.0
[INFO] [stderr]   Downloaded openssl-macros v0.1.0
[INFO] [stderr]   Downloaded url v2.3.1
[INFO] [stderr]   Downloaded cc v1.0.78
[INFO] [stderr]   Downloaded openssl-sys v0.9.80
[INFO] [stderr]   Downloaded schannel v0.1.20
[INFO] [stderr]   Downloaded core-foundation-sys v0.8.3
[INFO] [stderr]   Downloaded security-framework-sys v2.6.1
[INFO] [stderr]   Downloaded serde_urlencoded v0.5.5
[INFO] [stderr]   Downloaded net2 v0.2.38
[INFO] [stderr]   Downloaded form_urlencoded v1.1.0
[INFO] [stderr]   Downloaded percent-encoding v2.2.0
[INFO] [stderr]   Downloaded publicsuffix v1.5.6
[INFO] [stderr]   Downloaded indexmap v1.9.2
[INFO] [stderr]   Downloaded try-lock v0.2.3
[INFO] [stderr]   Downloaded unicase v2.6.0
[INFO] [stderr]   Downloaded pkg-config v0.3.26
[INFO] [stderr]   Downloaded dtoa v0.4.8
[INFO] [stderr]   Downloaded tokio-current-thread v0.1.7
[INFO] [stderr]   Downloaded tokio-io v0.1.13
[INFO] [stderr]   Downloaded memoffset v0.5.6
[INFO] [stderr]   Downloaded crossbeam-epoch v0.8.2
[INFO] [stderr]   Downloaded hermit-abi v0.2.6
[INFO] [stderr]   Downloaded num_cpus v1.15.0
[INFO] [stderr]   Downloaded slab v0.4.7
[INFO] [stderr]   Downloaded tokio-executor v0.1.10
[INFO] [stderr]   Downloaded serde v1.0.152
[INFO] [stderr]   Downloaded tokio-sync v0.1.8
[INFO] [stderr]   Downloaded crossbeam-deque v0.7.4
[INFO] [stderr]   Downloaded crossbeam-queue v0.2.3
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.18
[INFO] [stderr]   Downloaded tokio-timer v0.2.13
[INFO] [stderr]   Downloaded uuid v0.7.4
[INFO] [stderr]   Downloaded wikipedia v0.3.4
[INFO] [stderr]   Downloaded unicode-ident v1.0.6
[INFO] [stderr]   Downloaded encoding_rs v0.8.31
[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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6df88491e65f3445cd666bef525a284c5aad6c95b2faec899b2cf8d176934716
[INFO] running `Command { std: "docker" "start" "-a" "6df88491e65f3445cd666bef525a284c5aad6c95b2faec899b2cf8d176934716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6df88491e65f3445cd666bef525a284c5aad6c95b2faec899b2cf8d176934716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6df88491e65f3445cd666bef525a284c5aad6c95b2faec899b2cf8d176934716", kill_on_drop: false }`
[INFO] [stdout] 6df88491e65f3445cd666bef525a284c5aad6c95b2faec899b2cf8d176934716
[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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59c007bfa53e601c00c67d9823a1e822b8cc78c4ceb4b8ad5e43d9e15757682f
[INFO] running `Command { std: "docker" "start" "-a" "59c007bfa53e601c00c67d9823a1e822b8cc78c4ceb4b8ad5e43d9e15757682f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/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 serde v1.0.152
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling openssl v0.10.45
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[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" "59c007bfa53e601c00c67d9823a1e822b8cc78c4ceb4b8ad5e43d9e15757682f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59c007bfa53e601c00c67d9823a1e822b8cc78c4ceb4b8ad5e43d9e15757682f", kill_on_drop: false }`
[INFO] [stdout] 59c007bfa53e601c00c67d9823a1e822b8cc78c4ceb4b8ad5e43d9e15757682f