[INFO] fetching crate flutterbug 0.1.1...
[INFO] testing flutterbug-0.1.1 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate flutterbug 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate flutterbug 0.1.1
[INFO] finished tweaking crates.io crate flutterbug 0.1.1
[INFO] tweaked toml for crates.io crate flutterbug 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flutterbug 0.1.1 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate flutterbug 0.1.1 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3aa2c2cafdb9ddebae8fb2c0c4d3e309cbd33487908186ad4e4561a628919e1e
[INFO] running `Command { std: "docker" "start" "-a" "3aa2c2cafdb9ddebae8fb2c0c4d3e309cbd33487908186ad4e4561a628919e1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3aa2c2cafdb9ddebae8fb2c0c4d3e309cbd33487908186ad4e4561a628919e1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3aa2c2cafdb9ddebae8fb2c0c4d3e309cbd33487908186ad4e4561a628919e1e", kill_on_drop: false }`
[INFO] [stdout] 3aa2c2cafdb9ddebae8fb2c0c4d3e309cbd33487908186ad4e4561a628919e1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21aefb4ec85184ee7755278e6734566463f764fb5e4ea4e561ff6d86296efc2e
[INFO] running `Command { std: "docker" "start" "-a" "21aefb4ec85184ee7755278e6734566463f764fb5e4ea4e561ff6d86296efc2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling flutterbug v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling euclid v0.20.11
[INFO] [stderr]    Compiling thiserror-impl v1.0.16
[INFO] [stderr]    Compiling thiserror v1.0.16
[INFO] [stdout] warning: fields `error_code`, `minor_code`, `request`, and `err_text` are never read
[INFO] [stdout]    --> src/event.rs:894:5
[INFO] [stdout]     |
[INFO] [stdout] 889 | pub struct ErrorEvent {
[INFO] [stdout]     |            ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 894 |     error_code: c_uchar,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 895 |     minor_code: c_uchar,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 896 |     request: c_uchar,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 897 |     err_text: String,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ErrorEvent` has a derived impl for the trait `Clone`, 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 4.30s
[INFO] running `Command { std: "docker" "inspect" "21aefb4ec85184ee7755278e6734566463f764fb5e4ea4e561ff6d86296efc2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21aefb4ec85184ee7755278e6734566463f764fb5e4ea4e561ff6d86296efc2e", kill_on_drop: false }`
[INFO] [stdout] 21aefb4ec85184ee7755278e6734566463f764fb5e4ea4e561ff6d86296efc2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6c4a471f7dd4a9b97796c642ce71f3ef766b982df6d29e5e42ded6b7dd764e4
[INFO] running `Command { std: "docker" "start" "-a" "c6c4a471f7dd4a9b97796c642ce71f3ef766b982df6d29e5e42ded6b7dd764e4", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `float-ord v0.2.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   unable to get packages from source
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack package `float-ord v0.2.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/float-ord-0.2.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "c6c4a471f7dd4a9b97796c642ce71f3ef766b982df6d29e5e42ded6b7dd764e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6c4a471f7dd4a9b97796c642ce71f3ef766b982df6d29e5e42ded6b7dd764e4", kill_on_drop: false }`
[INFO] [stdout] c6c4a471f7dd4a9b97796c642ce71f3ef766b982df6d29e5e42ded6b7dd764e4