[INFO] cloning repository https://github.com/RafaelBM91/rust-crud [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RafaelBM91/rust-crud" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRafaelBM91%2Frust-crud", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRafaelBM91%2Frust-crud'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 373716fc3fcd5c5e206099aa46bd3f0f1f2ca69b [INFO] checking RafaelBM91/rust-crud against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRafaelBM91%2Frust-crud" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/RafaelBM91/rust-crud 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 git repo https://github.com/RafaelBM91/rust-crud [INFO] finished tweaking git repo https://github.com/RafaelBM91/rust-crud [INFO] tweaked toml for git repo https://github.com/RafaelBM91/rust-crud written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/RafaelBM91/rust-crud 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] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded sequence_trie v0.3.6 [INFO] [stderr] Downloaded sha-1 v0.7.0 [INFO] [stderr] Downloaded semver v0.8.0 [INFO] [stderr] Downloaded bodyparser v0.8.0 [INFO] [stderr] Downloaded persistent v0.4.0 [INFO] [stderr] Downloaded juniper_codegen v0.11.1 [INFO] [stderr] Downloaded juniper v0.11.1 [INFO] [stderr] Downloaded bson v0.13.0 [INFO] [stderr] Downloaded urlencoded v0.6.0 [INFO] [stderr] Downloaded textnonce v0.6.5 [INFO] [stderr] Downloaded mount v0.4.0 [INFO] [stderr] Downloaded logger v0.4.0 [INFO] [stderr] Downloaded iron v0.6.0 [INFO] [stderr] Downloaded scan_fmt v0.1.3 [INFO] [stderr] Downloaded mongodb v0.3.12 [INFO] [stderr] Downloaded md-5 v0.7.0 [INFO] [stderr] Downloaded separator v0.3.1 [INFO] [stderr] Downloaded try_from v0.2.2 [INFO] [stderr] Downloaded juniper_iron v0.3.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 56e506f4b5fa5328c43d4be7ab2411d130b3973b29ca7119f9baa282cdbc1106 [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" "56e506f4b5fa5328c43d4be7ab2411d130b3973b29ca7119f9baa282cdbc1106", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "56e506f4b5fa5328c43d4be7ab2411d130b3973b29ca7119f9baa282cdbc1106", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "56e506f4b5fa5328c43d4be7ab2411d130b3973b29ca7119f9baa282cdbc1106", kill_on_drop: false }` [INFO] [stdout] 56e506f4b5fa5328c43d4be7ab2411d130b3973b29ca7119f9baa282cdbc1106 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] c5dd595b15d4b31f535ac84638e2c54c8e85203c5321eb485fb8a2090d615690 [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" "c5dd595b15d4b31f535ac84638e2c54c8e85203c5321eb485fb8a2090d615690", 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] phf_shared v0.7.24 (as host dependency): unicase [INFO] [stderr] rand_core v0.3.1 (as host dependency): alloc, std [INFO] [stderr] [INFO] [stderr] Compiling libc v0.2.54 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling siphasher v0.2.3 [INFO] [stderr] Checking cfg-if v0.1.7 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Checking safemem v0.3.0 [INFO] [stderr] Compiling typenum v1.10.0 [INFO] [stderr] Checking traitobject v0.1.0 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Compiling httparse v1.3.3 [INFO] [stderr] Compiling num-traits v0.2.6 [INFO] [stderr] Checking typeable v0.1.2 [INFO] [stderr] Checking language-tags v0.2.2 [INFO] [stderr] Compiling ryu v0.2.8 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Compiling syn v0.15.34 [INFO] [stderr] Checking modifier v0.1.0 [INFO] [stderr] Checking byte-tools v0.2.0 [INFO] [stderr] Checking arrayref v0.3.5 [INFO] [stderr] Compiling regex v1.1.6 [INFO] [stderr] Checking constant_time_eq v0.1.3 [INFO] [stderr] Checking fake-simd v0.1.2 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking hex v0.3.2 [INFO] [stderr] Checking try_from v0.2.2 [INFO] [stderr] Checking sequence_trie v0.3.6 [INFO] [stderr] Checking separator v0.3.1 [INFO] [stderr] Checking bitflags v1.0.4 [INFO] [stderr] Checking data-encoding v2.1.2 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand_jitter v0.1.4 [INFO] [stderr] Checking unicode-normalization v0.1.8 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Checking unsafe-any v0.4.2 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking block-buffer v0.3.3 [INFO] [stderr] Checking semver v0.8.0 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Checking base64 v0.9.3 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking indexmap v1.0.2 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Checking typemap v0.3.3 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Compiling syn v0.14.9 [INFO] [stderr] Checking plugin v0.2.6 [INFO] [stderr] Checking mime v0.2.6 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling aho-corasick v0.7.3 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking num_cpus v1.10.0 [INFO] [stderr] Checking rand v0.5.6 [INFO] [stderr] Checking hostname v0.1.5 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Compiling phf_shared v0.7.24 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking phf v0.7.24 [INFO] [stderr] Checking generic-array v0.9.0 [INFO] [stderr] Checking chrono v0.4.6 [INFO] [stderr] Checking digest v0.7.6 [INFO] [stderr] Checking crypto-mac v0.6.2 [INFO] [stderr] Checking sha2 v0.7.1 [INFO] [stderr] Checking hmac v0.6.3 [INFO] [stderr] Checking md-5 v0.7.0 [INFO] [stderr] Checking sha-1 v0.7.0 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking pbkdf2 v0.2.3 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Checking regex v0.2.11 [INFO] [stderr] Compiling phf_codegen v0.7.24 [INFO] [stderr] Checking bson v0.13.0 [INFO] [stderr] Checking hyper v0.10.16 [INFO] [stderr] Compiling mime_guess v1.8.7 [INFO] [stderr] Checking scan_fmt v0.1.3 [INFO] [stderr] Compiling serde_derive v1.0.91 [INFO] [stderr] Checking iron v0.6.0 [INFO] [stderr] Checking persistent v0.4.0 [INFO] [stderr] Checking logger v0.4.0 [INFO] [stderr] Checking mount v0.4.0 [INFO] [stderr] Checking bodyparser v0.8.0 [INFO] [stderr] Checking urlencoded v0.6.0 [INFO] [stderr] Compiling juniper_codegen v0.11.1 [INFO] [stderr] Checking textnonce v0.6.5 [INFO] [stderr] Checking mongodb v0.3.12 [INFO] [stderr] Checking juniper v0.11.1 [INFO] [stderr] Checking juniper_iron v0.3.0 [INFO] [stderr] Checking rust-test v0.1.0 (/tmp/fixit) [INFO] [stderr] Migrating src/main.rs from 2018 edition to 2021 [INFO] [stderr] Fixed src/mongo.rs (1 fix) [INFO] [stderr] Fixed src/server.rs (1 fix) [INFO] [stdout] warning: associated function is never used: `insert_doc_operation` [INFO] [stdout] --> src/mongo.rs:62:12 [INFO] [stdout] | [INFO] [stdout] 62 | pub fn insert_doc_operation (mut document: OrderedDocument) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `insert_doc_operation` [INFO] [stdout] --> src/mongo.rs:62:12 [INFO] [stdout] | [INFO] [stdout] 62 | pub fn insert_doc_operation (mut document: OrderedDocument) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 57s [INFO] [stderr] Running `cargo check` to verify 2021 [INFO] [stderr] Compiling phf_shared v0.7.24 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Compiling phf_codegen v0.7.24 [INFO] [stderr] Compiling mime_guess v1.8.7 [INFO] [stdout] error[E0277]: the trait bound `UniCase<&str>: phf_shared::PhfHash` is not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.7/build.rs:37:21 [INFO] [stdout] | [INFO] [stdout] 37 | forward_map.entry(UniCase(key), &format!("{:?}", val)); [INFO] [stdout] | ^^^^^ the trait `phf_shared::PhfHash` is not implemented for `UniCase<&str>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `UniCase<&str>: phf_shared::PhfHash` is not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.7/build.rs:34:27 [INFO] [stdout] | [INFO] [stdout] 34 | let mut forward_map = PhfMap::new(); [INFO] [stdout] | ^^^^^^^^^^^ the trait `phf_shared::PhfHash` is not implemented for `UniCase<&str>` [INFO] [stdout] | [INFO] [stdout] note: required by `phf_codegen::Map::::new` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/phf_codegen-0.7.24/src/lib.rs:101:5 [INFO] [stdout] | [INFO] [stdout] 101 | pub fn new() -> Map { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: the method `build` exists for struct `phf_codegen::Map>`, but its trait bounds were not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.7/build.rs:40:17 [INFO] [stdout] | [INFO] [stdout] 40 | forward_map.build(out).unwrap(); [INFO] [stdout] | ^^^^^ method cannot be called on `phf_codegen::Map>` due to unsatisfied trait bounds [INFO] [stdout] | [INFO] [stdout] ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unicase-1.4.2/src/lib.rs:35:1 [INFO] [stdout] | [INFO] [stdout] 35 | pub struct UniCase(pub S); [INFO] [stdout] | ----------------------------- doesn't satisfy `UniCase<&str>: phf_shared::PhfHash` [INFO] [stdout] | [INFO] [stdout] = note: the following trait bounds were not satisfied: [INFO] [stdout] `UniCase<&str>: phf_shared::PhfHash` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `UniCase<&str>: phf_shared::PhfHash` is not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.7/build.rs:76:21 [INFO] [stdout] | [INFO] [stdout] 76 | sub_map.entry(sub, &format!("({}, {})", sub_start, sub_end)); [INFO] [stdout] | ^^^^^ the trait `phf_shared::PhfHash` is not implemented for `UniCase<&str>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `UniCase<&str>: phf_shared::PhfHash` is not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.7/build.rs:69:27 [INFO] [stdout] | [INFO] [stdout] 69 | let mut sub_map = PhfMap::new(); [INFO] [stdout] | ^^^^^^^^^^^ the trait `phf_shared::PhfHash` is not implemented for `UniCase<&str>` [INFO] [stdout] | [INFO] [stdout] note: required by `phf_codegen::Map::::new` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/phf_codegen-0.7.24/src/lib.rs:101:5 [INFO] [stdout] | [INFO] [stdout] 101 | pub fn new() -> Map { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: the method `build` exists for struct `phf_codegen::Map>`, but its trait bounds were not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.7/build.rs:82:17 [INFO] [stdout] | [INFO] [stdout] 82 | sub_map.build(&mut subs_bytes).unwrap(); [INFO] [stdout] | ^^^^^ method cannot be called on `phf_codegen::Map>` due to unsatisfied trait bounds [INFO] [stdout] | [INFO] [stdout] ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unicase-1.4.2/src/lib.rs:35:1 [INFO] [stdout] | [INFO] [stdout] 35 | pub struct UniCase(pub S); [INFO] [stdout] | ----------------------------- doesn't satisfy `UniCase<&str>: phf_shared::PhfHash` [INFO] [stdout] | [INFO] [stdout] = note: the following trait bounds were not satisfied: [INFO] [stdout] `UniCase<&str>: phf_shared::PhfHash` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `UniCase<&str>: phf_shared::PhfHash` is not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.7/build.rs:86:17 [INFO] [stdout] | [INFO] [stdout] 86 | rev_map.entry( [INFO] [stdout] | ^^^^^ the trait `phf_shared::PhfHash` is not implemented for `UniCase<&str>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `UniCase<&str>: phf_shared::PhfHash` is not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.7/build.rs:62:23 [INFO] [stdout] | [INFO] [stdout] 62 | let mut rev_map = PhfMap::new(); [INFO] [stdout] | ^^^^^^^^^^^ the trait `phf_shared::PhfHash` is not implemented for `UniCase<&str>` [INFO] [stdout] | [INFO] [stdout] note: required by `phf_codegen::Map::::new` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/phf_codegen-0.7.24/src/lib.rs:101:5 [INFO] [stdout] | [INFO] [stdout] 101 | pub fn new() -> Map { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: the method `build` exists for struct `phf_codegen::Map>`, but its trait bounds were not satisfied [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.7/build.rs:92:13 [INFO] [stdout] | [INFO] [stdout] 92 | rev_map.build(out).unwrap(); [INFO] [stdout] | ^^^^^ method cannot be called on `phf_codegen::Map>` due to unsatisfied trait bounds [INFO] [stdout] | [INFO] [stdout] ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unicase-1.4.2/src/lib.rs:35:1 [INFO] [stdout] | [INFO] [stdout] 35 | pub struct UniCase(pub S); [INFO] [stdout] | ----------------------------- doesn't satisfy `UniCase<&str>: phf_shared::PhfHash` [INFO] [stdout] | [INFO] [stdout] = note: the following trait bounds were not satisfied: [INFO] [stdout] `UniCase<&str>: phf_shared::PhfHash` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 9 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0599. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `mime_guess` due to 10 previous errors [INFO] [stderr] error: failed to check after updating to 2021 [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `cargo check --frozen --all --all-targets --message-format=json` (exit status: 101) [INFO] running `Command { std: "docker" "inspect" "c5dd595b15d4b31f535ac84638e2c54c8e85203c5321eb485fb8a2090d615690", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c5dd595b15d4b31f535ac84638e2c54c8e85203c5321eb485fb8a2090d615690", kill_on_drop: false }` [INFO] [stdout] c5dd595b15d4b31f535ac84638e2c54c8e85203c5321eb485fb8a2090d615690