[INFO] fetching crate tco 0.0.2...
[INFO] checking tco-0.0.2 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate tco 0.0.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate tco 0.0.2 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 tco 0.0.2
[INFO] finished tweaking crates.io crate tco 0.0.2
[INFO] tweaked toml for crates.io crate tco 0.0.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate tco 0.0.2 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trybuild v1.0.26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6c5710705649e31caa65f0adee7ed7238b56e1e63b801ec5d4d25bb158af20d7
[INFO] running `Command { std: "docker" "start" "-a" "6c5710705649e31caa65f0adee7ed7238b56e1e63b801ec5d4d25bb158af20d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c5710705649e31caa65f0adee7ed7238b56e1e63b801ec5d4d25bb158af20d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c5710705649e31caa65f0adee7ed7238b56e1e63b801ec5d4d25bb158af20d7", kill_on_drop: false }`
[INFO] [stdout] 6c5710705649e31caa65f0adee7ed7238b56e1e63b801ec5d4d25bb158af20d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] b8a75632de8520b475df16308234f716d3d1c55864acf938325a0c7d89073067
[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" "b8a75632de8520b475df16308234f716d3d1c55864acf938325a0c7d89073067", 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 v1.0.10: default
[INFO] [stderr]   proc-macro2 v1.0.10 (as host dependency): default
[INFO] [stderr]   syn v1.0.18: visit
[INFO] [stderr]   syn v1.0.18 (as host dependency): visit
[INFO] [stderr] 
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]     Checking tco v0.0.2 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking serde v1.0.106
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking trybuild v1.0.26
[INFO] [stderr]    Migrating tests/ui.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/factorial/main.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/async/main.rs from 2018 edition to 2021
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.95s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling tco v0.0.2 (/tmp/fixit)
[INFO] [stderr]     Checking quote v1.0.4
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.41s
[INFO] running `Command { std: "docker" "inspect" "b8a75632de8520b475df16308234f716d3d1c55864acf938325a0c7d89073067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8a75632de8520b475df16308234f716d3d1c55864acf938325a0c7d89073067", kill_on_drop: false }`
[INFO] [stdout] b8a75632de8520b475df16308234f716d3d1c55864acf938325a0c7d89073067