[INFO] fetching crate cvars 0.1.0...
[INFO] checking cvars-0.1.0 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate cvars 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate cvars 0.1.0 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cvars 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate cvars 0.1.0
[INFO] tweaked toml for crates.io crate cvars 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate cvars 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43d8703fa3cfb7070c1c67f779598a68ee4e8fe8be55da5f72e8a892fe47cdd9
[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" "43d8703fa3cfb7070c1c67f779598a68ee4e8fe8be55da5f72e8a892fe47cdd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43d8703fa3cfb7070c1c67f779598a68ee4e8fe8be55da5f72e8a892fe47cdd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43d8703fa3cfb7070c1c67f779598a68ee4e8fe8be55da5f72e8a892fe47cdd9", kill_on_drop: false }`
[INFO] [stdout] 43d8703fa3cfb7070c1c67f779598a68ee4e8fe8be55da5f72e8a892fe47cdd9
[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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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] 4f23f521fc98c172b897dacc8479889296c0d760749336443825e2a8e7f9e2c2
[INFO] running `Command { std: "docker" "start" "-a" "4f23f521fc98c172b897dacc8479889296c0d760749336443825e2a8e7f9e2c2", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo.
[INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously.
[INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html
[INFO] [stderr] When building the following dependencies, the given features will no longer be used:
[INFO] [stderr] 
[INFO] [stderr]   proc-macro2 v1.0.28: default
[INFO] [stderr]   proc-macro2 v1.0.28 (as host dependency): default
[INFO] [stderr] 
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling trybuild v1.0.43
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking dissimilar v1.0.2
[INFO] [stderr]     Checking strum v0.21.0
[INFO] [stderr]     Checking proc-macro2 v1.0.28
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking cvars v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]     Checking serde v1.0.127
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]    Migrating tests/progress.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/testing.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/stdin.rs from 2018 edition to 2021
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.95s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling cvars v0.1.0 (/tmp/fixit)
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking syn v1.0.74
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.09s
[INFO] running `Command { std: "docker" "inspect" "4f23f521fc98c172b897dacc8479889296c0d760749336443825e2a8e7f9e2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f23f521fc98c172b897dacc8479889296c0d760749336443825e2a8e7f9e2c2", kill_on_drop: false }`
[INFO] [stdout] 4f23f521fc98c172b897dacc8479889296c0d760749336443825e2a8e7f9e2c2