[INFO] fetching crate refren 0.1.0...
[INFO] checking refren-0.1.0 against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] extracting crate refren 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate refren 0.1.0 on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate refren 0.1.0
[INFO] finished tweaking crates.io crate refren 0.1.0
[INFO] tweaked toml for crates.io crate refren 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c16cc3090e9bd06781e1d128f2fc1b58a1979c80648420d4b8f67d7a3b97447
[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" "7c16cc3090e9bd06781e1d128f2fc1b58a1979c80648420d4b8f67d7a3b97447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c16cc3090e9bd06781e1d128f2fc1b58a1979c80648420d4b8f67d7a3b97447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c16cc3090e9bd06781e1d128f2fc1b58a1979c80648420d4b8f67d7a3b97447", kill_on_drop: false }`
[INFO] [stdout] 7c16cc3090e9bd06781e1d128f2fc1b58a1979c80648420d4b8f67d7a3b97447
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d726c5affe0b7d3baccfebf2df6b53fe87ec70ae3b154d9d920cb7a84f3f4aef
[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" "d726c5affe0b7d3baccfebf2df6b53fe87ec70ae3b154d9d920cb7a84f3f4aef", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking refren v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/name.rs:41:42
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn singular<'a>(&'a self) -> Box<Iterator<Item = &'a Token> + 'a> {
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = &'a Token> + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/name.rs:68:32
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/transform.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn transform(&self, reader: &mut io::Read, writer: &mut io::Write) -> io::Result<()>;
[INFO] [stdout]   |                                      ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/transform.rs:4:61
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn transform(&self, reader: &mut io::Read, writer: &mut io::Write) -> io::Result<()>;
[INFO] [stdout]   |                                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform.rs:138:42
[INFO] [stdout]     |
[INFO] [stdout] 138 |         fn transform(&self, reader: &mut io::Read, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stdout]     |                                          ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform.rs:138:65
[INFO] [stdout]     |
[INFO] [stdout] 138 |         fn transform(&self, reader: &mut io::Read, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stdout]     |                                                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform.rs:228:85
[INFO] [stdout]     |
[INFO] [stdout] 228 | pub fn default_transformer<I: IntoIterator<Item = (String, String)>>(map: I) -> Box<Transform> {
[INFO] [stdout]     |                                                                                     ^^^^^^^^^ help: use `dyn`: `dyn Transform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:24:61
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn run_command(args_os: std::env::ArgsOs) -> Result<(), Box<std::error::Error>> {
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:77:31
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn process_file(transformer: &Transform, file_name: &str) -> io::Result<()> {
[INFO] [stdout]    |                               ^^^^^^^^^ help: use `dyn`: `dyn Transform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/name.rs:41:42
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn singular<'a>(&'a self) -> Box<Iterator<Item = &'a Token> + 'a> {
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = &'a Token> + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/name.rs:68:32
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/transform.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn transform(&self, reader: &mut io::Read, writer: &mut io::Write) -> io::Result<()>;
[INFO] [stdout]   |                                      ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/transform.rs:4:61
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn transform(&self, reader: &mut io::Read, writer: &mut io::Write) -> io::Result<()>;
[INFO] [stdout]   |                                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform.rs:138:42
[INFO] [stdout]     |
[INFO] [stdout] 138 |         fn transform(&self, reader: &mut io::Read, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stdout]     |                                          ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform.rs:138:65
[INFO] [stdout]     |
[INFO] [stdout] 138 |         fn transform(&self, reader: &mut io::Read, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stdout]     |                                                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform.rs:228:85
[INFO] [stdout]     |
[INFO] [stdout] 228 | pub fn default_transformer<I: IntoIterator<Item = (String, String)>>(map: I) -> Box<Transform> {
[INFO] [stdout]     |                                                                                     ^^^^^^^^^ help: use `dyn`: `dyn Transform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:24:61
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn run_command(args_os: std::env::ArgsOs) -> Result<(), Box<std::error::Error>> {
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:77:31
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn process_file(transformer: &Transform, file_name: &str) -> io::Result<()> {
[INFO] [stdout]    |                               ^^^^^^^^^ help: use `dyn`: `dyn Transform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.80s
[INFO] running `Command { std: "docker" "inspect" "d726c5affe0b7d3baccfebf2df6b53fe87ec70ae3b154d9d920cb7a84f3f4aef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d726c5affe0b7d3baccfebf2df6b53fe87ec70ae3b154d9d920cb7a84f3f4aef", kill_on_drop: false }`
[INFO] [stdout] d726c5affe0b7d3baccfebf2df6b53fe87ec70ae3b154d9d920cb7a84f3f4aef