[INFO] fetching crate infer_schema_internals 1.4.0...
[INFO] checking infer_schema_internals-1.4.0 against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682
[INFO] extracting crate infer_schema_internals 1.4.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate infer_schema_internals 1.4.0 on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate infer_schema_internals 1.4.0
[INFO] finished tweaking crates.io crate infer_schema_internals 1.4.0
[INFO] tweaked toml for crates.io crate infer_schema_internals 1.4.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive-error-chain v0.10.1
[INFO] [stderr]   Downloaded quine-mc_cluskey v0.2.4
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e86904b088bc4afbab3059efc8bfd9e700830b00616404fe68ea33add7981fe
[INFO] running `Command { std: "docker" "start" "-a" "0e86904b088bc4afbab3059efc8bfd9e700830b00616404fe68ea33add7981fe", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe22503dab62e9202214b2b2dc815ecf1ce5307de91a90b1436b26d378492bb8
[INFO] running `Command { std: "docker" "start" "-a" "fe22503dab62e9202214b2b2dc815ecf1ce5307de91a90b1436b26d378492bb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking ucd-util v0.1.10
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]    Compiling derive-error-chain v0.10.1
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking dotenv v0.10.1
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]     Checking diesel v1.4.8
[INFO] [stderr]     Checking infer_schema_internals v1.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: At least one backend must be specified for use with this crate.
[INFO] [stdout]         In Cargo.toml, please specify `features = ["postgresql"]`, `features = ["mysql"]`, or `features = ["sqlite"]`
[INFO] [stdout]        
[INFO] [stdout]         ex. `infer_schema_internals { features = ["postgres"] }`
[INFO] [stdout]         
[INFO] [stdout]   --> src/inference.rs:70:14
[INFO] [stdout]    |
[INFO] [stdout] 70 |           _ => compile_error!(
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 71 | |             "At least one backend must be specified for use with this crate.\n \
[INFO] [stdout] 72 | |              In Cargo.toml, please specify `features = [\"postgresql\"]`, \
[INFO] [stdout] 73 | |              `features = [\"mysql\"]`, or `features = [\"sqlite\"]`\n\n \
[INFO] [stdout] 74 | |              ex. `infer_schema_internals { features = [\"postgres\"] }`\n "
[INFO] [stdout] 75 | |         ),
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:2:9
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![deny(warnings, missing_debug_implementations, missing_copy_implementations)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `diesel::deserialize::FromSqlRow`
[INFO] [stdout]  --> src/data_structures.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use diesel::deserialize::FromSqlRow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/inference.rs:30:22
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let connection = try!(establish_connection(database_url));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/inference.rs:161:22
[INFO] [stdout]     |
[INFO] [stdout] 161 |     let connection = try!(establish_connection(database_url));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: At least one backend must be specified for use with this crate.
[INFO] [stdout]         In Cargo.toml, please specify `features = ["postgresql"]`, `features = ["mysql"]`, or `features = ["sqlite"]`
[INFO] [stdout]        
[INFO] [stdout]         ex. `infer_schema_internals { features = ["postgres"] }`
[INFO] [stdout]         
[INFO] [stdout]   --> src/inference.rs:70:14
[INFO] [stdout]    |
[INFO] [stdout] 70 |           _ => compile_error!(
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 71 | |             "At least one backend must be specified for use with this crate.\n \
[INFO] [stdout] 72 | |              In Cargo.toml, please specify `features = [\"postgresql\"]`, \
[INFO] [stdout] 73 | |              `features = [\"mysql\"]`, or `features = [\"sqlite\"]`\n\n \
[INFO] [stdout] 74 | |              ex. `infer_schema_internals { features = [\"postgres\"] }`\n "
[INFO] [stdout] 75 | |         ),
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:2:9
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![deny(warnings, missing_debug_implementations, missing_copy_implementations)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `diesel::deserialize::FromSqlRow`
[INFO] [stdout]  --> src/data_structures.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use diesel::deserialize::FromSqlRow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/inference.rs:30:22
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let connection = try!(establish_connection(database_url));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/inference.rs:161:22
[INFO] [stdout]     |
[INFO] [stdout] 161 |     let connection = try!(establish_connection(database_url));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 | ) -> Result<Vec<TableName>, Box<Error>> {
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[deny(bare_trait_objects)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 29 | ) -> Result<Vec<TableName>, Box<dyn Error>> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 | ) -> Result<Vec<TableName>, Box<Error>> {
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[deny(bare_trait_objects)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 29 | ) -> Result<Vec<TableName>, Box<dyn Error>> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:42:87
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) fn establish_connection(database_url: &str) -> Result<InferConnection, Box<Error>> {
[INFO] [stdout]    |                                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) fn establish_connection(database_url: &str) -> Result<InferConnection, Box<dyn Error>> {
[INFO] [stdout]    |                                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:79:76
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn establish_real_connection<Conn>(database_url: &str) -> Result<Conn, Box<Error>>
[INFO] [stdout]    |                                                                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn establish_real_connection<Conn>(database_url: &str) -> Result<Conn, Box<dyn Error>>
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:94:41
[INFO] [stdout]    |
[INFO] [stdout] 94 | ) -> Result<Vec<ColumnInformation>, Box<Error>> {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 | ) -> Result<Vec<ColumnInformation>, Box<dyn Error>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:113:29
[INFO] [stdout]     |
[INFO] [stdout] 113 | ) -> Result<ColumnType, Box<Error>> {
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 113 | ) -> Result<ColumnType, Box<dyn Error>> {
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:127:30
[INFO] [stdout]     |
[INFO] [stdout] 127 | ) -> Result<Vec<String>, Box<Error>> {
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 127 | ) -> Result<Vec<String>, Box<dyn Error>> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:160:44
[INFO] [stdout]     |
[INFO] [stdout] 160 | ) -> Result<Vec<ForeignKeyConstraint>, Box<Error>> {
[INFO] [stdout]     |                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 160 | ) -> Result<Vec<ForeignKeyConstraint>, Box<dyn Error>> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:192:86
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn load_table_data(database_url: &str, name: TableName) -> Result<TableData, Box<Error>> {
[INFO] [stdout]     |                                                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn load_table_data(database_url: &str, name: TableName) -> Result<TableData, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:42:87
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) fn establish_connection(database_url: &str) -> Result<InferConnection, Box<Error>> {
[INFO] [stdout]    |                                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) fn establish_connection(database_url: &str) -> Result<InferConnection, Box<dyn Error>> {
[INFO] [stdout]    |                                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:79:76
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn establish_real_connection<Conn>(database_url: &str) -> Result<Conn, Box<Error>>
[INFO] [stdout]    |                                                                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn establish_real_connection<Conn>(database_url: &str) -> Result<Conn, Box<dyn Error>>
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:94:41
[INFO] [stdout]    |
[INFO] [stdout] 94 | ) -> Result<Vec<ColumnInformation>, Box<Error>> {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 | ) -> Result<Vec<ColumnInformation>, Box<dyn Error>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:113:29
[INFO] [stdout]     |
[INFO] [stdout] 113 | ) -> Result<ColumnType, Box<Error>> {
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 113 | ) -> Result<ColumnType, Box<dyn Error>> {
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:127:30
[INFO] [stdout]     |
[INFO] [stdout] 127 | ) -> Result<Vec<String>, Box<Error>> {
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 127 | ) -> Result<Vec<String>, Box<dyn Error>> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:160:44
[INFO] [stdout]     |
[INFO] [stdout] 160 | ) -> Result<Vec<ForeignKeyConstraint>, Box<Error>> {
[INFO] [stdout]     |                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 160 | ) -> Result<Vec<ForeignKeyConstraint>, Box<dyn Error>> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:192:86
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn load_table_data(database_url: &str, name: TableName) -> Result<TableData, Box<Error>> {
[INFO] [stdout]     |                                                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn load_table_data(database_url: &str, name: TableName) -> Result<TableData, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable expression
[INFO] [stdout]    --> src/inference.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 95  |       let column_info = match *conn {
[INFO] [stdout]     |  _______________________-
[INFO] [stdout] 96  | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 97  | |         InferConnection::Sqlite(ref c) => ::sqlite::get_table_data(c, table),
[INFO] [stdout] 98  | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 101 | |         InferConnection::Mysql(ref c) => ::information_schema::get_table_data(c, table),
[INFO] [stdout] 102 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 103 | /     if let Err(NotFound) = column_info {
[INFO] [stdout] 104 | |         Err(format!("no table exists named {}", table.to_string()).into())
[INFO] [stdout] 105 | |     } else {
[INFO] [stdout] 106 | |         column_info.map_err(Into::into)
[INFO] [stdout] 107 | |     }
[INFO] [stdout]     | |_____^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(unreachable_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable arm
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |        let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |   _____________________________________^____-
[INFO] [stdout]     |  |_____________________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 129 | ||         #[cfg(feature = "sqlite")]
[INFO] [stdout] 130 | ||         InferConnection::Sqlite(ref c) => ::sqlite::get_primary_keys(c, table),
[INFO] [stdout] 131 | ||         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   ||
[INFO] [stdout] 134 | ||         InferConnection::Mysql(ref c) => ::information_schema::get_primary_keys(c, table),
[INFO] [stdout] 135 | ||     });
[INFO] [stdout]     | ||_____-^ unreachable arm
[INFO] [stdout]     |  |_____|
[INFO] [stdout]     |        any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `try` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable expression
[INFO] [stdout]    --> src/inference.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 95  |       let column_info = match *conn {
[INFO] [stdout]     |  _______________________-
[INFO] [stdout] 96  | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 97  | |         InferConnection::Sqlite(ref c) => ::sqlite::get_table_data(c, table),
[INFO] [stdout] 98  | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 101 | |         InferConnection::Mysql(ref c) => ::information_schema::get_table_data(c, table),
[INFO] [stdout] 102 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 103 | /     if let Err(NotFound) = column_info {
[INFO] [stdout] 104 | |         Err(format!("no table exists named {}", table.to_string()).into())
[INFO] [stdout] 105 | |     } else {
[INFO] [stdout] 106 | |         column_info.map_err(Into::into)
[INFO] [stdout] 107 | |     }
[INFO] [stdout]     | |_____^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(unreachable_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable arm
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |        let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |   _____________________________________^____-
[INFO] [stdout]     |  |_____________________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 129 | ||         #[cfg(feature = "sqlite")]
[INFO] [stdout] 130 | ||         InferConnection::Sqlite(ref c) => ::sqlite::get_primary_keys(c, table),
[INFO] [stdout] 131 | ||         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   ||
[INFO] [stdout] 134 | ||         InferConnection::Mysql(ref c) => ::information_schema::get_primary_keys(c, table),
[INFO] [stdout] 135 | ||     });
[INFO] [stdout]     | ||_____-^ unreachable arm
[INFO] [stdout]     |  |_____|
[INFO] [stdout]     |        any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `try` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |       let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 129 | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 130 | |         InferConnection::Sqlite(ref c) => ::sqlite::get_primary_keys(c, table),
[INFO] [stdout] 131 | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 134 | |         InferConnection::Mysql(ref c) => ::information_schema::get_primary_keys(c, table),
[INFO] [stdout] 135 | |     });
[INFO] [stdout]     | |      ^
[INFO] [stdout]     | |      |
[INFO] [stdout]     | |______cannot infer type
[INFO] [stdout]     |        required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `Box<dyn std::error::Error>: From<_>`
[INFO] [stdout]     = help: the following types implement trait `From<T>`:
[INFO] [stdout]               <Box<OsStr> as From<Cow<'_, OsStr>>>
[INFO] [stdout]               <Box<OsStr> as From<OsString>>
[INFO] [stdout]               <Box<OsStr> as From<&OsStr>>
[INFO] [stdout]               <Box<Path> as From<Cow<'_, Path>>>
[INFO] [stdout]               <Box<Path> as From<PathBuf>>
[INFO] [stdout]               <Box<Path> as From<&Path>>
[INFO] [stdout]               <Box<CStr> as From<Cow<'_, CStr>>>
[INFO] [stdout]               <Box<CStr> as From<CString>>
[INFO] [stdout]             and 18 others
[INFO] [stdout]     = note: this error originates in the macro `try` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable expression
[INFO] [stdout]    --> src/inference.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 163 |       let constraints = match connection {
[INFO] [stdout]     |  _______________________-
[INFO] [stdout] 164 | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 165 | |         InferConnection::Sqlite(c) => ::sqlite::load_foreign_key_constraints(&c, schema_name),
[INFO] [stdout] 166 | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 173 | |         }
[INFO] [stdout] 174 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 175 |
[INFO] [stdout] 176 | /     constraints.map(|mut ct| {
[INFO] [stdout] 177 | |         ct.sort();
[INFO] [stdout] 178 | |         ct
[INFO] [stdout] 179 | |     })
[INFO] [stdout]     | |______^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |       let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 129 | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 130 | |         InferConnection::Sqlite(ref c) => ::sqlite::get_primary_keys(c, table),
[INFO] [stdout] 131 | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 134 | |         InferConnection::Mysql(ref c) => ::information_schema::get_primary_keys(c, table),
[INFO] [stdout] 135 | |     });
[INFO] [stdout]     | |      ^
[INFO] [stdout]     | |      |
[INFO] [stdout]     | |______cannot infer type
[INFO] [stdout]     |        required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `Box<dyn std::error::Error>: From<_>`
[INFO] [stdout]     = help: the following types implement trait `From<T>`:
[INFO] [stdout]               <Box<OsStr> as From<Cow<'_, OsStr>>>
[INFO] [stdout]               <Box<OsStr> as From<OsString>>
[INFO] [stdout]               <Box<OsStr> as From<&OsStr>>
[INFO] [stdout]               <Box<Path> as From<Cow<'_, Path>>>
[INFO] [stdout]               <Box<Path> as From<PathBuf>>
[INFO] [stdout]               <Box<Path> as From<&Path>>
[INFO] [stdout]               <Box<CStr> as From<Cow<'_, CStr>>>
[INFO] [stdout]               <Box<CStr> as From<CString>>
[INFO] [stdout]             and 18 others
[INFO] [stdout]     = note: this error originates in the macro `try` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/inference.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let constraints = match connection {
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     constraints.map(|mut ct| {
[INFO] [stdout]     |     ----------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving `constraints` an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let constraints: /* Type */ = match connection {
[INFO] [stdout]     |                    ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable expression
[INFO] [stdout]    --> src/inference.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 163 |       let constraints = match connection {
[INFO] [stdout]     |  _______________________-
[INFO] [stdout] 164 | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 165 | |         InferConnection::Sqlite(c) => ::sqlite::load_foreign_key_constraints(&c, schema_name),
[INFO] [stdout] 166 | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 173 | |         }
[INFO] [stdout] 174 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 175 |
[INFO] [stdout] 176 | /     constraints.map(|mut ct| {
[INFO] [stdout] 177 | |         ct.sort();
[INFO] [stdout] 178 | |         ct
[INFO] [stdout] 179 | |     })
[INFO] [stdout]     | |______^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/inference.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let constraints = match connection {
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     constraints.map(|mut ct| {
[INFO] [stdout]     |     ----------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving `constraints` an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let constraints: /* Type */ = match connection {
[INFO] [stdout]     |                    ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:238:34
[INFO] [stdout]     |
[INFO] [stdout] 238 |         .collect::<Result<_, Box<Error>>>()?;
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 238 |         .collect::<Result<_, Box<dyn Error>>>()?;
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:238:34
[INFO] [stdout]     |
[INFO] [stdout] 238 |         .collect::<Result<_, Box<Error>>>()?;
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 238 |         .collect::<Result<_, Box<dyn Error>>>()?;
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `diesel`
[INFO] [stdout]  --> src/data_structures.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use diesel::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `diesel`
[INFO] [stdout]  --> src/data_structures.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use diesel::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 21 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0283.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 21 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0283.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `infer_schema_internals` (lib test) due to 22 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `infer_schema_internals` (lib) due to 22 previous errors
[INFO] running `Command { std: "docker" "inspect" "fe22503dab62e9202214b2b2dc815ecf1ce5307de91a90b1436b26d378492bb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe22503dab62e9202214b2b2dc815ecf1ce5307de91a90b1436b26d378492bb8", kill_on_drop: false }`
[INFO] [stdout] fe22503dab62e9202214b2b2dc815ecf1ce5307de91a90b1436b26d378492bb8
[INFO] checking infer_schema_internals-1.4.0 against try#785364c7e5e0804473a3fddfb579798ea14e3493 for pr-114682
[INFO] extracting crate infer_schema_internals 1.4.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate infer_schema_internals 1.4.0 on toolchain 785364c7e5e0804473a3fddfb579798ea14e3493
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate infer_schema_internals 1.4.0
[INFO] finished tweaking crates.io crate infer_schema_internals 1.4.0
[INFO] tweaked toml for crates.io crate infer_schema_internals 1.4.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e7f0bd501607133b8423f9f5e032c7d376fa47a34015569f8f2f25c643dc047
[INFO] running `Command { std: "docker" "start" "-a" "9e7f0bd501607133b8423f9f5e032c7d376fa47a34015569f8f2f25c643dc047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e7f0bd501607133b8423f9f5e032c7d376fa47a34015569f8f2f25c643dc047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e7f0bd501607133b8423f9f5e032c7d376fa47a34015569f8f2f25c643dc047", kill_on_drop: false }`
[INFO] [stdout] 9e7f0bd501607133b8423f9f5e032c7d376fa47a34015569f8f2f25c643dc047
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 348b179050ecfcd3dc5f06e0ec00891d151de702586e70edfb34db03668ca56c
[INFO] running `Command { std: "docker" "start" "-a" "348b179050ecfcd3dc5f06e0ec00891d151de702586e70edfb34db03668ca56c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking ucd-util v0.1.10
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]    Compiling derive-error-chain v0.10.1
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking dotenv v0.10.1
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]     Checking diesel v1.4.8
[INFO] [stderr]     Checking infer_schema_internals v1.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: At least one backend must be specified for use with this crate.
[INFO] [stdout]         In Cargo.toml, please specify `features = ["postgresql"]`, `features = ["mysql"]`, or `features = ["sqlite"]`
[INFO] [stdout]        
[INFO] [stdout]         ex. `infer_schema_internals { features = ["postgres"] }`
[INFO] [stdout]         
[INFO] [stdout]   --> src/inference.rs:70:14
[INFO] [stdout]    |
[INFO] [stdout] 70 |           _ => compile_error!(
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 71 | |             "At least one backend must be specified for use with this crate.\n \
[INFO] [stdout] 72 | |              In Cargo.toml, please specify `features = [\"postgresql\"]`, \
[INFO] [stdout] 73 | |              `features = [\"mysql\"]`, or `features = [\"sqlite\"]`\n\n \
[INFO] [stdout] 74 | |              ex. `infer_schema_internals { features = [\"postgres\"] }`\n "
[INFO] [stdout] 75 | |         ),
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: At least one backend must be specified for use with this crate.
[INFO] [stdout]         In Cargo.toml, please specify `features = ["postgresql"]`, `features = ["mysql"]`, or `features = ["sqlite"]`
[INFO] [stdout]        
[INFO] [stdout]         ex. `infer_schema_internals { features = ["postgres"] }`
[INFO] [stdout]         
[INFO] [stdout]   --> src/inference.rs:70:14
[INFO] [stdout]    |
[INFO] [stdout] 70 |           _ => compile_error!(
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 71 | |             "At least one backend must be specified for use with this crate.\n \
[INFO] [stdout] 72 | |              In Cargo.toml, please specify `features = [\"postgresql\"]`, \
[INFO] [stdout] 73 | |              `features = [\"mysql\"]`, or `features = [\"sqlite\"]`\n\n \
[INFO] [stdout] 74 | |              ex. `infer_schema_internals { features = [\"postgres\"] }`\n "
[INFO] [stdout] 75 | |         ),
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:2:9
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![deny(warnings, missing_debug_implementations, missing_copy_implementations)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `diesel::deserialize::FromSqlRow`
[INFO] [stdout]  --> src/data_structures.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use diesel::deserialize::FromSqlRow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/inference.rs:30:22
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let connection = try!(establish_connection(database_url));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/inference.rs:161:22
[INFO] [stdout]     |
[INFO] [stdout] 161 |     let connection = try!(establish_connection(database_url));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:2:9
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![deny(warnings, missing_debug_implementations, missing_copy_implementations)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `diesel::deserialize::FromSqlRow`
[INFO] [stdout]  --> src/data_structures.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use diesel::deserialize::FromSqlRow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/inference.rs:30:22
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let connection = try!(establish_connection(database_url));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/inference.rs:161:22
[INFO] [stdout]     |
[INFO] [stdout] 161 |     let connection = try!(establish_connection(database_url));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 | ) -> Result<Vec<TableName>, Box<Error>> {
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[deny(bare_trait_objects)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 29 | ) -> Result<Vec<TableName>, Box<dyn Error>> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 | ) -> Result<Vec<TableName>, Box<Error>> {
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[deny(bare_trait_objects)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 29 | ) -> Result<Vec<TableName>, Box<dyn Error>> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:42:87
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) fn establish_connection(database_url: &str) -> Result<InferConnection, Box<Error>> {
[INFO] [stdout]    |                                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) fn establish_connection(database_url: &str) -> Result<InferConnection, Box<dyn Error>> {
[INFO] [stdout]    |                                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:42:87
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) fn establish_connection(database_url: &str) -> Result<InferConnection, Box<Error>> {
[INFO] [stdout]    |                                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) fn establish_connection(database_url: &str) -> Result<InferConnection, Box<dyn Error>> {
[INFO] [stdout]    |                                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:79:76
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn establish_real_connection<Conn>(database_url: &str) -> Result<Conn, Box<Error>>
[INFO] [stdout]    |                                                                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn establish_real_connection<Conn>(database_url: &str) -> Result<Conn, Box<dyn Error>>
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:79:76
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn establish_real_connection<Conn>(database_url: &str) -> Result<Conn, Box<Error>>
[INFO] [stdout]    |                                                                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn establish_real_connection<Conn>(database_url: &str) -> Result<Conn, Box<dyn Error>>
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:94:41
[INFO] [stdout]    |
[INFO] [stdout] 94 | ) -> Result<Vec<ColumnInformation>, Box<Error>> {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 | ) -> Result<Vec<ColumnInformation>, Box<dyn Error>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/inference.rs:94:41
[INFO] [stdout]    |
[INFO] [stdout] 94 | ) -> Result<Vec<ColumnInformation>, Box<Error>> {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 | ) -> Result<Vec<ColumnInformation>, Box<dyn Error>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:113:29
[INFO] [stdout]     |
[INFO] [stdout] 113 | ) -> Result<ColumnType, Box<Error>> {
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 113 | ) -> Result<ColumnType, Box<dyn Error>> {
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:113:29
[INFO] [stdout]     |
[INFO] [stdout] 113 | ) -> Result<ColumnType, Box<Error>> {
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 113 | ) -> Result<ColumnType, Box<dyn Error>> {
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:127:30
[INFO] [stdout]     |
[INFO] [stdout] 127 | ) -> Result<Vec<String>, Box<Error>> {
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 127 | ) -> Result<Vec<String>, Box<dyn Error>> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:127:30
[INFO] [stdout]     |
[INFO] [stdout] 127 | ) -> Result<Vec<String>, Box<Error>> {
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 127 | ) -> Result<Vec<String>, Box<dyn Error>> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:160:44
[INFO] [stdout]     |
[INFO] [stdout] 160 | ) -> Result<Vec<ForeignKeyConstraint>, Box<Error>> {
[INFO] [stdout]     |                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 160 | ) -> Result<Vec<ForeignKeyConstraint>, Box<dyn Error>> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:160:44
[INFO] [stdout]     |
[INFO] [stdout] 160 | ) -> Result<Vec<ForeignKeyConstraint>, Box<Error>> {
[INFO] [stdout]     |                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 160 | ) -> Result<Vec<ForeignKeyConstraint>, Box<dyn Error>> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:192:86
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn load_table_data(database_url: &str, name: TableName) -> Result<TableData, Box<Error>> {
[INFO] [stdout]     |                                                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn load_table_data(database_url: &str, name: TableName) -> Result<TableData, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:192:86
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn load_table_data(database_url: &str, name: TableName) -> Result<TableData, Box<Error>> {
[INFO] [stdout]     |                                                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn load_table_data(database_url: &str, name: TableName) -> Result<TableData, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable expression
[INFO] [stdout]    --> src/inference.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 95  |       let column_info = match *conn {
[INFO] [stdout]     |  _______________________-
[INFO] [stdout] 96  | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 97  | |         InferConnection::Sqlite(ref c) => ::sqlite::get_table_data(c, table),
[INFO] [stdout] 98  | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 101 | |         InferConnection::Mysql(ref c) => ::information_schema::get_table_data(c, table),
[INFO] [stdout] 102 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 103 | /     if let Err(NotFound) = column_info {
[INFO] [stdout] 104 | |         Err(format!("no table exists named {}", table.to_string()).into())
[INFO] [stdout] 105 | |     } else {
[INFO] [stdout] 106 | |         column_info.map_err(Into::into)
[INFO] [stdout] 107 | |     }
[INFO] [stdout]     | |_____^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(unreachable_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable expression
[INFO] [stdout]    --> src/inference.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 95  |       let column_info = match *conn {
[INFO] [stdout]     |  _______________________-
[INFO] [stdout] 96  | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 97  | |         InferConnection::Sqlite(ref c) => ::sqlite::get_table_data(c, table),
[INFO] [stdout] 98  | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 101 | |         InferConnection::Mysql(ref c) => ::information_schema::get_table_data(c, table),
[INFO] [stdout] 102 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 103 | /     if let Err(NotFound) = column_info {
[INFO] [stdout] 104 | |         Err(format!("no table exists named {}", table.to_string()).into())
[INFO] [stdout] 105 | |     } else {
[INFO] [stdout] 106 | |         column_info.map_err(Into::into)
[INFO] [stdout] 107 | |     }
[INFO] [stdout]     | |_____^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(unreachable_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable arm
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |        let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |   _____________________________________^____-
[INFO] [stdout]     |  |_____________________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 129 | ||         #[cfg(feature = "sqlite")]
[INFO] [stdout] 130 | ||         InferConnection::Sqlite(ref c) => ::sqlite::get_primary_keys(c, table),
[INFO] [stdout] 131 | ||         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   ||
[INFO] [stdout] 134 | ||         InferConnection::Mysql(ref c) => ::information_schema::get_primary_keys(c, table),
[INFO] [stdout] 135 | ||     });
[INFO] [stdout]     | ||_____-^ unreachable arm
[INFO] [stdout]     |  |_____|
[INFO] [stdout]     |        any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `try` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable arm
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |        let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |   _____________________________________^____-
[INFO] [stdout]     |  |_____________________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 129 | ||         #[cfg(feature = "sqlite")]
[INFO] [stdout] 130 | ||         InferConnection::Sqlite(ref c) => ::sqlite::get_primary_keys(c, table),
[INFO] [stdout] 131 | ||         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   ||
[INFO] [stdout] 134 | ||         InferConnection::Mysql(ref c) => ::information_schema::get_primary_keys(c, table),
[INFO] [stdout] 135 | ||     });
[INFO] [stdout]     | ||_____-^ unreachable arm
[INFO] [stdout]     |  |_____|
[INFO] [stdout]     |        any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `try` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |       let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 129 | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 130 | |         InferConnection::Sqlite(ref c) => ::sqlite::get_primary_keys(c, table),
[INFO] [stdout] 131 | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 134 | |         InferConnection::Mysql(ref c) => ::information_schema::get_primary_keys(c, table),
[INFO] [stdout] 135 | |     });
[INFO] [stdout]     | |      ^
[INFO] [stdout]     | |      |
[INFO] [stdout]     | |______cannot infer type
[INFO] [stdout]     |        required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `Box<dyn std::error::Error>: From<_>`
[INFO] [stdout]     = help: the following types implement trait `From<T>`:
[INFO] [stdout]               <Box<OsStr> as From<Cow<'_, OsStr>>>
[INFO] [stdout]               <Box<OsStr> as From<OsString>>
[INFO] [stdout]               <Box<OsStr> as From<&OsStr>>
[INFO] [stdout]               <Box<Path> as From<Cow<'_, Path>>>
[INFO] [stdout]               <Box<Path> as From<PathBuf>>
[INFO] [stdout]               <Box<Path> as From<&Path>>
[INFO] [stdout]               <Box<CStr> as From<Cow<'_, CStr>>>
[INFO] [stdout]               <Box<CStr> as From<CString>>
[INFO] [stdout]             and 18 others
[INFO] [stdout]     = note: this error originates in the macro `try` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/inference.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 |       let primary_keys: Vec<String> = try!(match *conn {
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 129 | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 130 | |         InferConnection::Sqlite(ref c) => ::sqlite::get_primary_keys(c, table),
[INFO] [stdout] 131 | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 134 | |         InferConnection::Mysql(ref c) => ::information_schema::get_primary_keys(c, table),
[INFO] [stdout] 135 | |     });
[INFO] [stdout]     | |      ^
[INFO] [stdout]     | |      |
[INFO] [stdout]     | |______cannot infer type
[INFO] [stdout]     |        required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `Box<dyn std::error::Error>: From<_>`
[INFO] [stdout]     = help: the following types implement trait `From<T>`:
[INFO] [stdout]               <Box<OsStr> as From<Cow<'_, OsStr>>>
[INFO] [stdout]               <Box<OsStr> as From<OsString>>
[INFO] [stdout]               <Box<OsStr> as From<&OsStr>>
[INFO] [stdout]               <Box<Path> as From<Cow<'_, Path>>>
[INFO] [stdout]               <Box<Path> as From<PathBuf>>
[INFO] [stdout]               <Box<Path> as From<&Path>>
[INFO] [stdout]               <Box<CStr> as From<Cow<'_, CStr>>>
[INFO] [stdout]               <Box<CStr> as From<CString>>
[INFO] [stdout]             and 18 others
[INFO] [stdout]     = note: this error originates in the macro `try` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable expression
[INFO] [stdout]    --> src/inference.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 163 |       let constraints = match connection {
[INFO] [stdout]     |  _______________________-
[INFO] [stdout] 164 | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 165 | |         InferConnection::Sqlite(c) => ::sqlite::load_foreign_key_constraints(&c, schema_name),
[INFO] [stdout] 166 | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 173 | |         }
[INFO] [stdout] 174 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 175 |
[INFO] [stdout] 176 | /     constraints.map(|mut ct| {
[INFO] [stdout] 177 | |         ct.sort();
[INFO] [stdout] 178 | |         ct
[INFO] [stdout] 179 | |     })
[INFO] [stdout]     | |______^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable expression
[INFO] [stdout]    --> src/inference.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 163 |       let constraints = match connection {
[INFO] [stdout]     |  _______________________-
[INFO] [stdout] 164 | |         #[cfg(feature = "sqlite")]
[INFO] [stdout] 165 | |         InferConnection::Sqlite(c) => ::sqlite::load_foreign_key_constraints(&c, schema_name),
[INFO] [stdout] 166 | |         #[cfg(feature = "postgres")]
[INFO] [stdout] ...   |
[INFO] [stdout] 173 | |         }
[INFO] [stdout] 174 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 175 |
[INFO] [stdout] 176 | /     constraints.map(|mut ct| {
[INFO] [stdout] 177 | |         ct.sort();
[INFO] [stdout] 178 | |         ct
[INFO] [stdout] 179 | |     })
[INFO] [stdout]     | |______^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/inference.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let constraints = match connection {
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     constraints.map(|mut ct| {
[INFO] [stdout]     |     ----------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving `constraints` an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let constraints: /* Type */ = match connection {
[INFO] [stdout]     |                    ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/inference.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let constraints = match connection {
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     constraints.map(|mut ct| {
[INFO] [stdout]     |     ----------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving `constraints` an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let constraints: /* Type */ = match connection {
[INFO] [stdout]     |                    ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:238:34
[INFO] [stdout]     |
[INFO] [stdout] 238 |         .collect::<Result<_, Box<Error>>>()?;
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 238 |         .collect::<Result<_, Box<dyn Error>>>()?;
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/inference.rs:238:34
[INFO] [stdout]     |
[INFO] [stdout] 238 |         .collect::<Result<_, Box<Error>>>()?;
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 238 |         .collect::<Result<_, Box<dyn Error>>>()?;
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `diesel`
[INFO] [stdout]  --> src/data_structures.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use diesel::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `diesel`
[INFO] [stdout]  --> src/data_structures.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use diesel::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 21 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0283.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 21 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0283.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `infer_schema_internals` (lib) due to 22 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `infer_schema_internals` (lib test) due to 22 previous errors
[INFO] running `Command { std: "docker" "inspect" "348b179050ecfcd3dc5f06e0ec00891d151de702586e70edfb34db03668ca56c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "348b179050ecfcd3dc5f06e0ec00891d151de702586e70edfb34db03668ca56c", kill_on_drop: false }`
[INFO] [stdout] 348b179050ecfcd3dc5f06e0ec00891d151de702586e70edfb34db03668ca56c
