[INFO] fetching crate groundhog 0.2.5...
[INFO] checking groundhog-0.2.5 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate groundhog 0.2.5 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate groundhog 0.2.5 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate groundhog 0.2.5
[INFO] finished tweaking crates.io crate groundhog 0.2.5
[INFO] tweaked toml for crates.io crate groundhog 0.2.5 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6241e494da359080d1461f0145ab92dfc09679dfc6f29b108d82ac461d209d5c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6241e494da359080d1461f0145ab92dfc09679dfc6f29b108d82ac461d209d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6241e494da359080d1461f0145ab92dfc09679dfc6f29b108d82ac461d209d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6241e494da359080d1461f0145ab92dfc09679dfc6f29b108d82ac461d209d5c", kill_on_drop: false }`
[INFO] [stdout] 6241e494da359080d1461f0145ab92dfc09679dfc6f29b108d82ac461d209d5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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] 11e8a8931806484158696309a6dfb32161bcf10e8aa20a83cacd819bc3612020
[INFO] running `Command { std: "docker" "start" "-a" "11e8a8931806484158696309a6dfb32161bcf10e8aa20a83cacd819bc3612020", kill_on_drop: false }`
[INFO] [stderr]     Checking groundhog v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `once_cell`
[INFO] [stdout]  --> src/std_timer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use once_cell::sync::Lazy;
[INFO] [stdout]   |     ^^^^^^^^^ use of undeclared crate or module `once_cell`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Lazy` in this scope
[INFO] [stdout]  --> src/std_timer.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | static T0: Lazy<Instant> = Lazy::new(|| {
[INFO] [stdout]   |            ^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::lazy::Lazy;
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::lazy::Lazy;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Lazy`
[INFO] [stdout]  --> src/std_timer.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 | static T0: Lazy<Instant> = Lazy::new(|| {
[INFO] [stdout]   |                            ^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::lazy::Lazy;
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::lazy::Lazy;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `groundhog`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "11e8a8931806484158696309a6dfb32161bcf10e8aa20a83cacd819bc3612020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11e8a8931806484158696309a6dfb32161bcf10e8aa20a83cacd819bc3612020", kill_on_drop: false }`
[INFO] [stdout] 11e8a8931806484158696309a6dfb32161bcf10e8aa20a83cacd819bc3612020