[INFO] cloning repository https://github.com/postpersonality/serde-transcode-cli
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/postpersonality/serde-transcode-cli" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpostpersonality%2Fserde-transcode-cli", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpostpersonality%2Fserde-transcode-cli'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d5dfdd34e485a7a93be19c55372c1bbade1328ad
[INFO] checking postpersonality/serde-transcode-cli against try#dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e for pr-153721
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpostpersonality%2Fserde-transcode-cli" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/postpersonality/serde-transcode-cli
[INFO] finished tweaking git repo https://github.com/postpersonality/serde-transcode-cli
[INFO] tweaked toml for git repo https://github.com/postpersonality/serde-transcode-cli written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/postpersonality/serde-transcode-cli on toolchain dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/postpersonality/serde-transcode-cli already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 005cd9675fddd8c48a99abd4874b5105ec6b1bb316798bde73dd6e3a81a75c04
[INFO] running `Command { std: "docker" "start" "005cd9675fddd8c48a99abd4874b5105ec6b1bb316798bde73dd6e3a81a75c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "005cd9675fddd8c48a99abd4874b5105ec6b1bb316798bde73dd6e3a81a75c04" "/opt/rustwide/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "005cd9675fddd8c48a99abd4874b5105ec6b1bb316798bde73dd6e3a81a75c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "005cd9675fddd8c48a99abd4874b5105ec6b1bb316798bde73dd6e3a81a75c04" "/opt/rustwide/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking tempfile v3.0.7
[INFO] [stderr]     Checking globset v0.4.3
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]     Checking ignore v0.4.7
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[INFO] [stderr]     Checking serde_json v1.0.39
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[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/integration_tests.rs:20:43
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn file_not_specified() -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn file_not_specified() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/integration_tests.rs:47:60
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn test(i_fixture: &str, o_format: &str) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn test(i_fixture: &str, o_format: &str) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/integration_tests.rs:85:34
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn json_json() -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn json_json() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/integration_tests.rs:90:34
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn json_cbor() -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn json_cbor() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/integration_tests.rs:95:34
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn json_toml() -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn json_toml() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/integration_tests.rs:100:34
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn json_yaml() -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn json_yaml() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/integration_tests.rs:105:34
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn cbor_json() -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn cbor_json() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/integration_tests.rs:110:34
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn cbor_toml() -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn cbor_toml() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/integration_tests.rs:115:34
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn cbor_yaml() -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn cbor_yaml() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/integration_tests.rs:120:34
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn toml_cbor() -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn toml_cbor() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/integration_tests.rs:125:34
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn toml_json() -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn toml_json() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/integration_tests.rs:130:34
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn toml_yaml() -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn toml_yaml() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input_file`, `output_file`, and `output_format` are never read
[INFO] [stdout]   --> tests/integration_tests.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct AppError {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 32 |     stderr: String,
[INFO] [stdout] 33 |     input_file: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 34 |     output_file: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 35 |     output_format: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AppError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.64s
[INFO] running `Command { std: "docker" "inspect" "005cd9675fddd8c48a99abd4874b5105ec6b1bb316798bde73dd6e3a81a75c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "005cd9675fddd8c48a99abd4874b5105ec6b1bb316798bde73dd6e3a81a75c04", kill_on_drop: false }`
[INFO] [stdout] 005cd9675fddd8c48a99abd4874b5105ec6b1bb316798bde73dd6e3a81a75c04
