[INFO] cloning repository https://github.com/reflog/rust-crash-repro [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reflog/rust-crash-repro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freflog%2Frust-crash-repro", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freflog%2Frust-crash-repro'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2d40358b6796a5629eb4197f3bcde46666cb12d7 [INFO] checking reflog/rust-crash-repro against master#9c3064e131f4939cc95a29bb11413c49bbda1491 for pr-144098 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freflog%2Frust-crash-repro" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/reflog/rust-crash-repro [INFO] finished tweaking git repo https://github.com/reflog/rust-crash-repro [INFO] tweaked toml for git repo https://github.com/reflog/rust-crash-repro written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/reflog/rust-crash-repro on toolchain 9c3064e131f4939cc95a29bb11413c49bbda1491 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/reflog/rust-crash-repro 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" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "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 [ERROR] error running command: no output for 300 seconds [INFO] checking reflog/rust-crash-repro against master#9c3064e131f4939cc95a29bb11413c49bbda1491 for pr-144098 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freflog%2Frust-crash-repro" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/reflog/rust-crash-repro [INFO] finished tweaking git repo https://github.com/reflog/rust-crash-repro [INFO] tweaked toml for git repo https://github.com/reflog/rust-crash-repro written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/reflog/rust-crash-repro on toolchain 9c3064e131f4939cc95a29bb11413c49bbda1491 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/reflog/rust-crash-repro 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" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "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 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4a1e0b4a6995e269bbeddffa7d99fee03fe9b68831f2ac5de721f40553eb2f55 [INFO] running `Command { std: "docker" "start" "-a" "4a1e0b4a6995e269bbeddffa7d99fee03fe9b68831f2ac5de721f40553eb2f55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4a1e0b4a6995e269bbeddffa7d99fee03fe9b68831f2ac5de721f40553eb2f55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4a1e0b4a6995e269bbeddffa7d99fee03fe9b68831f2ac5de721f40553eb2f55", kill_on_drop: false }` [INFO] [stdout] 4a1e0b4a6995e269bbeddffa7d99fee03fe9b68831f2ac5de721f40553eb2f55 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 917c4261037867511d9299d78627e8af3d9ea332d2231568b427bd07f751fbd2 [INFO] running `Command { std: "docker" "start" "-a" "917c4261037867511d9299d78627e8af3d9ea332d2231568b427bd07f751fbd2", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.73 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking rusttest v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Deserialize` [INFO] [stdout] --> src/main.rs:1:13 [INFO] [stdout] | [INFO] [stdout] 1 | use serde::{Deserialize, Serialize}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Deserialize` [INFO] [stdout] --> src/main.rs:1:13 [INFO] [stdout] | [INFO] [stdout] 1 | use serde::{Deserialize, Serialize}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `Result` doesn't implement `std::fmt::Display` [INFO] [stdout] --> src/main.rs:13:35 [INFO] [stdout] | [INFO] [stdout] 13 | println!("Hello, world! {:}", serde_json::to_string(&n)); [INFO] [stdout] | --- ^^^^^^^^^^^^^^^^^^^^^^^^^ `Result` cannot be formatted with the default formatter [INFO] [stdout] | | [INFO] [stdout] | required by this formatting parameter [INFO] [stdout] | [INFO] [stdout] = help: the trait `std::fmt::Display` is not implemented for `Result` [INFO] [stdout] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stdout] = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `Result` doesn't implement `std::fmt::Display` [INFO] [stdout] --> src/main.rs:13:35 [INFO] [stdout] | [INFO] [stdout] 13 | println!("Hello, world! {:}", serde_json::to_string(&n)); [INFO] [stdout] | --- ^^^^^^^^^^^^^^^^^^^^^^^^^ `Result` cannot be formatted with the default formatter [INFO] [stdout] | | [INFO] [stdout] | required by this formatting parameter [INFO] [stdout] | [INFO] [stdout] = help: the trait `std::fmt::Display` is not implemented for `Result` [INFO] [stdout] = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead [INFO] [stdout] = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rusttest` (bin "rusttest") due to 1 previous error; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `rusttest` (bin "rusttest" test) due to 1 previous error; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "917c4261037867511d9299d78627e8af3d9ea332d2231568b427bd07f751fbd2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "917c4261037867511d9299d78627e8af3d9ea332d2231568b427bd07f751fbd2", kill_on_drop: false }` [INFO] [stdout] 917c4261037867511d9299d78627e8af3d9ea332d2231568b427bd07f751fbd2