[INFO] fetching crate concat-idents 1.0.0...
[INFO] checking concat-idents-1.0.0 against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] extracting crate concat-idents 1.0.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate concat-idents 1.0.0 on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concat-idents 1.0.0
[INFO] finished tweaking crates.io crate concat-idents 1.0.0
[INFO] tweaked toml for crates.io crate concat-idents 1.0.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 99371a61adeb6235f4900ef7435671d149bec82095702e71d829fe810be40012
[INFO] running `Command { std: "docker" "start" "-a" "99371a61adeb6235f4900ef7435671d149bec82095702e71d829fe810be40012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99371a61adeb6235f4900ef7435671d149bec82095702e71d829fe810be40012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99371a61adeb6235f4900ef7435671d149bec82095702e71d829fe810be40012", kill_on_drop: false }`
[INFO] [stdout] 99371a61adeb6235f4900ef7435671d149bec82095702e71d829fe810be40012
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c40aa6f703e7e38f64d30227952d1cb0eb2dedc391999317e049aa5f35fe0df0
[INFO] running `Command { std: "docker" "start" "-a" "c40aa6f703e7e38f64d30227952d1cb0eb2dedc391999317e049aa5f35fe0df0", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v1.0.42
[INFO] [stderr]     Checking concat-idents v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking serde v1.0.116
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_json v1.0.58
[INFO] [stderr]     Checking trybuild v1.0.35
[INFO] [stdout] error: Expected ident
[INFO] [stdout]  --> tests/fail.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | concat_idents!(fn_name = 1, foo, bar, {
[INFO] [stdout]   |                          ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Expected ident
[INFO] [stdout]  --> tests/fail.rs:9:26
[INFO] [stdout]   |
[INFO] [stdout] 9 | concat_idents!(fn_name = true {
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Expected ident
[INFO] [stdout]   --> tests/fail.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 | concat_idents!(fn_name = struct {
[INFO] [stdout]    |                          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Expected ident
[INFO] [stdout]   --> tests/fail.rs:21:26
[INFO] [stdout]    |
[INFO] [stdout] 21 | concat_idents!(fn_name = 1 {
[INFO] [stdout]    |                          ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Expected ident
[INFO] [stdout]   --> tests/fail.rs:27:31
[INFO] [stdout]    |
[INFO] [stdout] 27 | concat_idents!(fn_name = foo, 1.0 {
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Expected ident
[INFO] [stdout]   --> tests/fail.rs:33:31
[INFO] [stdout]    |
[INFO] [stdout] 33 | concat_idents!(fn_name = foo, "bar" {
[INFO] [stdout]    |                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Expected ident
[INFO] [stdout]   --> tests/fail.rs:42:27
[INFO] [stdout]    |
[INFO] [stdout] 42 | concat_idents!(fn_name =  {
[INFO] [stdout]    |                           ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `concat-idents`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variant is never constructed: `B`
[INFO] [stdout]   --> tests/pass.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         B
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c40aa6f703e7e38f64d30227952d1cb0eb2dedc391999317e049aa5f35fe0df0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c40aa6f703e7e38f64d30227952d1cb0eb2dedc391999317e049aa5f35fe0df0", kill_on_drop: false }`
[INFO] [stdout] c40aa6f703e7e38f64d30227952d1cb0eb2dedc391999317e049aa5f35fe0df0