[INFO] updating cached repository https://github.com/jfyuen/rstgc
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cd057b9c6b7666b99f821501d6db993ee68c179f
[INFO] checking jfyuen/rstgc against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjfyuen%2Frstgc" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jfyuen/rstgc on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jfyuen/rstgc
[INFO] finished tweaking git repo https://github.com/jfyuen/rstgc
[INFO] tweaked toml for git repo https://github.com/jfyuen/rstgc written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/jfyuen/rstgc already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 31166769fc11bd4dd2591210c34d3d2791cb9c8ad3c687268ee125756c8d79d0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "31166769fc11bd4dd2591210c34d3d2791cb9c8ad3c687268ee125756c8d79d0"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]     Checking rstgc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:36:32
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/message.rs:22:21
[INFO] [stderr]    |
[INFO] [stderr] 22 |     mut writer: Box<std::io::Write>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/message.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |     mut reader: Box<std::io::Read>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:36:32
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/message.rs:22:21
[INFO] [stderr]    |
[INFO] [stderr] 22 |     mut writer: Box<std::io::Write>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/message.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |     mut reader: Box<std::io::Read>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:39:48
[INFO] [stderr]    |
[INFO] [stderr] 39 |             TgcError::ChanReceiveError(e) => e.cause(),
[INFO] [stderr]    |                                                ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:40:39
[INFO] [stderr]    |
[INFO] [stderr] 40 |             TgcError::IOError(e) => e.cause(),
[INFO] [stderr]    |                                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:41:46
[INFO] [stderr]    |
[INFO] [stderr] 41 |             TgcError::SerializeError(e) => e.cause(),
[INFO] [stderr]    |                                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:39:48
[INFO] [stderr]    |
[INFO] [stderr] 39 |             TgcError::ChanReceiveError(e) => e.cause(),
[INFO] [stderr]    |                                                ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:40:39
[INFO] [stderr]    |
[INFO] [stderr] 40 |             TgcError::IOError(e) => e.cause(),
[INFO] [stderr]    |                                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:41:46
[INFO] [stderr]    |
[INFO] [stderr] 41 |             TgcError::SerializeError(e) => e.cause(),
[INFO] [stderr]    |                                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/server.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let mut stream = stream?;
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/server.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let mut stream = stream?;
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.37s
[INFO] running `"docker" "inspect" "31166769fc11bd4dd2591210c34d3d2791cb9c8ad3c687268ee125756c8d79d0"`
[INFO] running `"docker" "rm" "-f" "31166769fc11bd4dd2591210c34d3d2791cb9c8ad3c687268ee125756c8d79d0"`
[INFO] [stdout] 31166769fc11bd4dd2591210c34d3d2791cb9c8ad3c687268ee125756c8d79d0