[INFO] crate polyglot 0.2.0 is already in cache
[INFO] checking polyglot-0.2.0 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate polyglot 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate polyglot 0.2.0 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate polyglot 0.2.0
[INFO] finished tweaking crates.io crate polyglot 0.2.0
[INFO] tweaked toml for crates.io crate polyglot 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c4262c9edaf0194ec6b4be4334b5eb8b5bf34f59ced7f5101e10a01e003780c2
[INFO] running `"docker" "start" "-a" "c4262c9edaf0194ec6b4be4334b5eb8b5bf34f59ced7f5101e10a01e003780c2"`
[INFO] [stderr]     Checking polyglot v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/de.rs:23:20
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn from_str<T>(s: &str, format: Format) -> crate::Result<T>
[INFO] [stderr]    |                    ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `format`
[INFO] [stderr]   --> src/de.rs:23:29
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn from_str<T>(s: &str, format: Format) -> crate::Result<T>
[INFO] [stderr]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rdr`
[INFO] [stderr]   --> src/de.rs:77:30
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn from_reader<R, T>(mut rdr: R, format: Format) -> crate::Result<T>
[INFO] [stderr]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_rdr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `format`
[INFO] [stderr]   --> src/de.rs:77:38
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn from_reader<R, T>(mut rdr: R, format: Format) -> crate::Result<T>
[INFO] [stderr]    |                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]   --> src/ser.rs:21:29
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn to_vec<T: Serialize>(val: &T, format: Format) -> crate::Result<Vec<u8>> {
[INFO] [stderr]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `format`
[INFO] [stderr]   --> src/ser.rs:21:38
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn to_vec<T: Serialize>(val: &T, format: Format) -> crate::Result<Vec<u8>> {
[INFO] [stderr]    |                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]   --> src/ser.rs:75:32
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn to_string<T: Serialize>(val: &T, format: Format) -> crate::Result<String> {
[INFO] [stderr]    |                                ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `format`
[INFO] [stderr]   --> src/ser.rs:75:41
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn to_string<T: Serialize>(val: &T, format: Format) -> crate::Result<String> {
[INFO] [stderr]    |                                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/de.rs:77:26
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn from_reader<R, T>(mut rdr: R, format: Format) -> crate::Result<T>
[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] error[E0599]: no variant or associated item named `JSON` found for enum `format::Format` in the current scope
[INFO] [stderr]   --> src/tests/de.rs:34:56
[INFO] [stderr]    |
[INFO] [stderr] 34 |     simple_json: (include_str!("data/1.json"), Format::JSON),
[INFO] [stderr]    |                                                        ^^^^ variant or associated item not found in `format::Format`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/format.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | pub enum Format {
[INFO] [stderr]    | --------------- variant or associated item `JSON` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `TOML` found for enum `format::Format` in the current scope
[INFO] [stderr]   --> src/tests/de.rs:35:56
[INFO] [stderr]    |
[INFO] [stderr] 35 |     simple_toml: (include_str!("data/1.toml"), Format::TOML),
[INFO] [stderr]    |                                                        ^^^^ variant or associated item not found in `format::Format`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/format.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | pub enum Format {
[INFO] [stderr]    | --------------- variant or associated item `TOML` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `JSON` found for enum `format::Format` in the current scope
[INFO] [stderr]   --> src/tests/format.rs:16:26
[INFO] [stderr]    |
[INFO] [stderr] 16 |     asref_json: (Format::JSON, "json"),
[INFO] [stderr]    |                          ^^^^ variant or associated item not found in `format::Format`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/format.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | pub enum Format {
[INFO] [stderr]    | --------------- variant or associated item `JSON` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `TOML` found for enum `format::Format` in the current scope
[INFO] [stderr]   --> src/tests/format.rs:17:26
[INFO] [stderr]    |
[INFO] [stderr] 17 |     asref_toml: (Format::TOML, "toml"),
[INFO] [stderr]    |                          ^^^^ variant or associated item not found in `format::Format`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/format.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | pub enum Format {
[INFO] [stderr]    | --------------- variant or associated item `TOML` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `MsgPack` found for enum `format::Format` in the current scope
[INFO] [stderr]   --> src/tests/format.rs:18:29
[INFO] [stderr]    |
[INFO] [stderr] 18 |     asref_msgpack: (Format::MsgPack, "msgpack"),
[INFO] [stderr]    |                             ^^^^^^^ variant or associated item not found in `format::Format`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/format.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | pub enum Format {
[INFO] [stderr]    | --------------- variant or associated item `MsgPack` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `YAML` found for enum `format::Format` in the current scope
[INFO] [stderr]   --> src/tests/format.rs:19:26
[INFO] [stderr]    |
[INFO] [stderr] 19 |     asref_yaml: (Format::YAML, "yaml"),
[INFO] [stderr]    |                          ^^^^ variant or associated item not found in `format::Format`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/format.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | pub enum Format {
[INFO] [stderr]    | --------------- variant or associated item `YAML` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `JSON` found for enum `format::Format` in the current scope
[INFO] [stderr]   --> src/tests/ser.rs:12:42
[INFO] [stderr]    |
[INFO] [stderr] 12 |                   for frmt in vec![Format::JSON, Format::MsgPack, Format::TOML, Format::YAML].iter() {
[INFO] [stderr]    |                                            ^^^^ variant or associated item not found in `format::Format`
[INFO] [stderr] ...
[INFO] [stderr] 28 | / ser_tests! {
[INFO] [stderr] 29 | |     base_struct: TestStructA{name: String::from("John"), age: 18, is_nice: true},
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_- in this macro invocation
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/format.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  |   pub enum Format {
[INFO] [stderr]    |   --------------- variant or associated item `JSON` not found here
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `MsgPack` found for enum `format::Format` in the current scope
[INFO] [stderr]   --> src/tests/ser.rs:12:56
[INFO] [stderr]    |
[INFO] [stderr] 12 |                   for frmt in vec![Format::JSON, Format::MsgPack, Format::TOML, Format::YAML].iter() {
[INFO] [stderr]    |                                                          ^^^^^^^ variant or associated item not found in `format::Format`
[INFO] [stderr] ...
[INFO] [stderr] 28 | / ser_tests! {
[INFO] [stderr] 29 | |     base_struct: TestStructA{name: String::from("John"), age: 18, is_nice: true},
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_- in this macro invocation
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/format.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  |   pub enum Format {
[INFO] [stderr]    |   --------------- variant or associated item `MsgPack` not found here
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `TOML` found for enum `format::Format` in the current scope
[INFO] [stderr]   --> src/tests/ser.rs:12:73
[INFO] [stderr]    |
[INFO] [stderr] 12 |                   for frmt in vec![Format::JSON, Format::MsgPack, Format::TOML, Format::YAML].iter() {
[INFO] [stderr]    |                                                                           ^^^^ variant or associated item not found in `format::Format`
[INFO] [stderr] ...
[INFO] [stderr] 28 | / ser_tests! {
[INFO] [stderr] 29 | |     base_struct: TestStructA{name: String::from("John"), age: 18, is_nice: true},
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_- in this macro invocation
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/format.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  |   pub enum Format {
[INFO] [stderr]    |   --------------- variant or associated item `TOML` not found here
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `YAML` found for enum `format::Format` in the current scope
[INFO] [stderr]   --> src/tests/ser.rs:12:87
[INFO] [stderr]    |
[INFO] [stderr] 12 |                   for frmt in vec![Format::JSON, Format::MsgPack, Format::TOML, Format::YAML].iter() {
[INFO] [stderr]    |                                                                                         ^^^^ variant or associated item not found in `format::Format`
[INFO] [stderr] ...
[INFO] [stderr] 28 | / ser_tests! {
[INFO] [stderr] 29 | |     base_struct: TestStructA{name: String::from("John"), age: 18, is_nice: true},
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_- in this macro invocation
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/format.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  |   pub enum Format {
[INFO] [stderr]    |   --------------- variant or associated item `YAML` not found here
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 10 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `polyglot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c4262c9edaf0194ec6b4be4334b5eb8b5bf34f59ced7f5101e10a01e003780c2"`
[INFO] running `"docker" "rm" "-f" "c4262c9edaf0194ec6b4be4334b5eb8b5bf34f59ced7f5101e10a01e003780c2"`
[INFO] [stdout] c4262c9edaf0194ec6b4be4334b5eb8b5bf34f59ced7f5101e10a01e003780c2
