[INFO] fetching crate cproxy 4.1.3...
[INFO] checking cproxy-4.1.3 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate cproxy 4.1.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cproxy 4.1.3 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 cproxy 4.1.3
[INFO] finished tweaking crates.io crate cproxy 4.1.3
[INFO] tweaked toml for crates.io crate cproxy 4.1.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate cproxy 4.1.3 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 cgroups-rs v0.2.5
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.16
[INFO] [stderr]   Downloaded cmd_lib_macros v0.11.6
[INFO] [stderr]   Downloaded with_drop v0.0.1
[INFO] [stderr]   Downloaded cmd_lib v0.11.6
[INFO] [stderr]   Downloaded flume v0.10.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 2c9203c631a1ffd1a656a984a72707b9bec24fa29284de558e0348fb76a54053
[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" "2c9203c631a1ffd1a656a984a72707b9bec24fa29284de558e0348fb76a54053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c9203c631a1ffd1a656a984a72707b9bec24fa29284de558e0348fb76a54053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c9203c631a1ffd1a656a984a72707b9bec24fa29284de558e0348fb76a54053", kill_on_drop: false }`
[INFO] [stdout] 2c9203c631a1ffd1a656a984a72707b9bec24fa29284de558e0348fb76a54053
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 18cced45cb34a12dbd9fdceff1a27cb003c75d603ea51bc639bf6b673fba1d56
[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" "18cced45cb34a12dbd9fdceff1a27cb003c75d603ea51bc639bf6b673fba1d56", 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]   syn v1.0.67 (as host dependency): visit
[INFO] [stderr] 
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking futures-sink v0.3.14
[INFO] [stderr]     Checking with_drop v0.0.1
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking spinning_top v0.2.3
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking nanorand v0.5.2
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking ctrlc v3.1.8
[INFO] [stderr]     Checking cgroups-rs v0.2.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.13
[INFO] [stderr]    Compiling pin-project-internal v1.0.6
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling cmd_lib_macros v0.11.6
[INFO] [stderr]     Checking cmd_lib v0.11.6
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking pin-project v1.0.6
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking flume v0.10.3
[INFO] [stderr]     Checking tracing-subscriber v0.2.16
[INFO] [stderr]     Checking cproxy v4.1.3 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/guards.rs (1 fix)
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/guards.rs:121:20
[INFO] [stdout]     |
[INFO] [stdout] 121 |     inner: Box<dyn Drop>,
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/main.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let _guard: Box<dyn Drop> = match args.mode.as_str() {
[INFO] [stdout]    |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/main.rs:105:25
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let _guard: Box<dyn Drop> = match args.mode.as_str() {
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/guards.rs:121:20
[INFO] [stdout]     |
[INFO] [stdout] 121 |     inner: Box<dyn Drop>,
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/main.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let _guard: Box<dyn Drop> = match args.mode.as_str() {
[INFO] [stdout]    |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/main.rs:105:25
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let _guard: Box<dyn Drop> = match args.mode.as_str() {
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.13
[INFO] [stderr]    Compiling pin-project-internal v1.0.6
[INFO] [stderr]    Compiling cmd_lib_macros v0.11.6
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking cmd_lib v0.11.6
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking tracing-subscriber v0.2.16
[INFO] [stderr]     Checking pin-project v1.0.6
[INFO] [stderr]     Checking flume v0.10.3
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking cproxy v4.1.3 (/tmp/fixit)
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/guards.rs:121:20
[INFO] [stdout]     |
[INFO] [stdout] 121 |     inner: Box<dyn Drop>,
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/main.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let _guard: Box<dyn Drop> = match args.mode.as_str() {
[INFO] [stdout]    |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/main.rs:105:25
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let _guard: Box<dyn Drop> = match args.mode.as_str() {
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/guards.rs:121:20
[INFO] [stdout]     |
[INFO] [stdout] 121 |     inner: Box<dyn Drop>,
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/main.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let _guard: Box<dyn Drop> = match args.mode.as_str() {
[INFO] [stdout]    |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/main.rs:105:25
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let _guard: Box<dyn Drop> = match args.mode.as_str() {
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.27s
[INFO] running `Command { std: "docker" "inspect" "18cced45cb34a12dbd9fdceff1a27cb003c75d603ea51bc639bf6b673fba1d56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18cced45cb34a12dbd9fdceff1a27cb003c75d603ea51bc639bf6b673fba1d56", kill_on_drop: false }`
[INFO] [stdout] 18cced45cb34a12dbd9fdceff1a27cb003c75d603ea51bc639bf6b673fba1d56